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ADSP-21489KSWZ-4B
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Analog Devices Digital Signal Processors (DSP/DSC), LQFP-176-EP(24x24). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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ADSP-21489KSWZ-4B
Analog Devices · Digital Signal Processors (DSP/DSC) · LQFP-176-EP(24x24)
ADSP-21489KSWZ-4B from Analog Devices, in a LQFP-176-EP(24x24). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SDDQM | tri_state | SDRAM DQM data mask; input mask during write cycles and output mask during read cycles; O/T (ipu); drives high after reset deassertion until SDRAM initialization completes, then goes low. |
| 2 | MS0 | tri_state | Memory select 0; active-low chip select for external memory bank 0; asserts simultaneously with address lines; O/T (ipu); hi-Z during reset. |
| 3 | SDCKE | tri_state | SDRAM clock enable; connects to SDRAM CKE pin to enable/disable the SDCLK signal; O/T (ipu); drives high after reset deassertion. |
| 4 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 5 | CLK_CFG1 | input | Core-to-CLKIN ratio control bit 1; with CLK_CFG0 selects startup clock ratio (00=8:1, 01=32:1, 10=16:1, 11=reserved); must be valid before RESET deasserts. |
| 6 | ADDR0 | bidirectional | External address bit 0; I/O/T (ipu); multiplexed with FLAGS15-8 (I/O) and PWM (O); all ADDR pins default to external memory interface mode after reset. |
| 7 | BOOT_CFG0 | input | Boot configuration bit 0; with BOOT_CFG2-1 selects 176-pin boot mode per Table 9; must be valid before RESET asserts. |
| 8 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max; all VDD_EXT pins must connect to the same supply. |
| 9 | ADDR1 | bidirectional | External address bit 1; I/O/T (ipu); multiplexed with FLAGS15-8 and PWM. |
| 10 | ADDR2 | bidirectional | External address bit 2; I/O/T (ipu); multiplexed with FLAGS15-8 and PWM. |
| 11 | ADDR3 | bidirectional | External address bit 3; I/O/T (ipu); multiplexed with FLAGS15-8 and PWM. |
| 12 | ADDR4 | bidirectional | External address bit 4; I/O/T (ipu); multiplexed with FLAGS15-8 and PWM; IDP channel 0 scans ADDR23-4 for parallel (PDAP) input data when configured via IDP_PDAP_CTL. |
| 13 | ADDR5 | bidirectional | External address bit 5; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 14 | BOOT_CFG1 | input | Boot configuration bit 1; with BOOT_CFG2-0 selects 176-pin boot mode; must be valid before RESET asserts. |
| 15 | GND | power_in | Ground reference. |
| 16 | ADDR6 | bidirectional | External address bit 6; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 17 | ADDR7 | bidirectional | External address bit 7; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 18 | NC | unconnected | No internal connection; leave unconnected. |
| 19 | NC | unconnected | No internal connection; leave unconnected. |
| 20 | ADDR8 | bidirectional | External address bit 8; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 21 | ADDR9 | bidirectional | External address bit 9; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 22 | CLK_CFG0 | input | Core-to-CLKIN ratio control bit 0; with CLK_CFG1 selects startup clock multiplier ratio; must be valid during reset. |
| 23 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 24 | CLKIN | input | Local clock input; used with XTAL to enable the internal clock generator or accepts an external oscillator; must not be stopped or changed or run below rated frequency. |
| 25 | XTAL | output | Crystal terminal; driven together with CLKIN to sustain an external fundamental-mode crystal oscillator; leave unconnected when using an external clock source. |
| 26 | ADDR10 | bidirectional | External address bit 10; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 27 | SDA10 | tri_state | SDRAM A10 auto-precharge pin; enables auto-precharge refresh during non-SDRAM accesses; replaces ADDR10 only during SDRAM access cycles; O/T (ipu). |
| 28 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 29 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 30 | ADDR11 | bidirectional | External address bit 11; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 31 | ADDR12 | bidirectional | External address bit 12; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 32 | ADDR17 | bidirectional | External address bit 17; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 33 | ADDR13 | bidirectional | External address bit 13; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 34 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 35 | ADDR18 | bidirectional | External address bit 18; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 36 | RESETOUT/RUNRSTIN | bidirectional | Reset output (default) or run-reset input; RUNRSTIN function enabled by setting bit 0 of RUNRSTCTL register; I/O (ipu); high-impedance default with internal pull-up. |
| 37 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 38 | DPI_P01 | bidirectional | Digital Peripheral Interface pin 1; physical interface to DPI SRU; routes SPI, UART, TWI, timers, PWM, flags, and PCG signals under software control; I/O/T (ipu). |
| 39 | DPI_P02 | bidirectional | Digital Peripheral Interface pin 2; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 40 | DPI_P03 | bidirectional | Digital Peripheral Interface pin 3; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 41 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 42 | DPI_P05 | bidirectional | Digital Peripheral Interface pin 5; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 43 | DPI_P04 | bidirectional | Digital Peripheral Interface pin 4; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 44 | DPI_P06 | bidirectional | Digital Peripheral Interface pin 6; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 45 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 46 | DPI_P08 | bidirectional | Digital Peripheral Interface pin 8; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 47 | DPI_P07 | bidirectional | Digital Peripheral Interface pin 7; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 48 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 49 | DPI_P09 | bidirectional | Digital Peripheral Interface pin 9; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 50 | DPI_P10 | bidirectional | Digital Peripheral Interface pin 10; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 51 | DPI_P11 | bidirectional | Digital Peripheral Interface pin 11; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 52 | DPI_P12 | bidirectional | Digital Peripheral Interface pin 12; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 53 | DPI_P13 | bidirectional | Digital Peripheral Interface pin 13; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 54 | DPI_P14 | bidirectional | Digital Peripheral Interface pin 14; routes any DPI SRU signal to/from on-chip peripherals under software control; I/O/T (ipu). |
| 55 | DAI_P03 | bidirectional | Digital Application Interface pin 3; physical interface to DAI SRU; any DAI input or output (SPORT, PCG, S/PDIF, ASRC, IDP) may be routed here under software control; I/O/T (ipu). |
| 56 | NC | unconnected | No internal connection; leave unconnected. |
| 57 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 58 | NC | unconnected | No internal connection; leave unconnected. |
| 59 | NC | unconnected | No internal connection; leave unconnected. |
| 60 | NC | unconnected | No internal connection; leave unconnected. |
| 61 | NC | unconnected | No internal connection; leave unconnected. |
| 62 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 63 | NC | unconnected | No internal connection; leave unconnected. |
| 64 | NC | unconnected | No internal connection; leave unconnected. |
| 65 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 66 | NC | unconnected | No internal connection; leave unconnected. |
| 67 | NC | unconnected | No internal connection; leave unconnected. |
| 68 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 69 | NC | unconnected | No internal connection; leave unconnected. |
| 70 | WDTRSTO | output | Watchdog timer reset output; asserts low when watchdog timer expires to force the system into a known state; O (ipu); 176-pin package only. |
| 71 | NC | unconnected | No internal connection; leave unconnected. |
| 72 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 73 | DAI_P07 | bidirectional | Digital Application Interface pin 7; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 74 | DAI_P13 | bidirectional | Digital Application Interface pin 13; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 75 | DAI_P19 | bidirectional | Digital Application Interface pin 19; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 76 | DAI_P01 | bidirectional | Digital Application Interface pin 1; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 77 | DAI_P02 | bidirectional | Digital Application Interface pin 2; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 78 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 79 | NC | unconnected | No internal connection; leave unconnected. |
| 80 | NC | unconnected | No internal connection; leave unconnected. |
| 81 | NC | unconnected | No internal connection; leave unconnected. |
| 82 | NC | unconnected | No internal connection; leave unconnected. |
| 83 | NC | unconnected | No internal connection; leave unconnected. |
| 84 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 85 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 86 | DAI_P06 | bidirectional | Digital Application Interface pin 6; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 87 | DAI_P05 | bidirectional | Digital Application Interface pin 5; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 88 | DAI_P09 | bidirectional | Digital Application Interface pin 9; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 89 | DAI_P10 | bidirectional | Digital Application Interface pin 10; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 90 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 91 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 92 | DAI_P20 | bidirectional | Digital Application Interface pin 20; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 93 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 94 | DAI_P08 | bidirectional | Digital Application Interface pin 8; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 95 | DAI_P14 | bidirectional | Digital Application Interface pin 14; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 96 | DAI_P04 | bidirectional | Digital Application Interface pin 4; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 97 | DAI_P18 | bidirectional | Digital Application Interface pin 18; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 98 | DAI_P17 | bidirectional | Digital Application Interface pin 17; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 99 | DAI_P16 | bidirectional | Digital Application Interface pin 16; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 100 | DAI_P12 | bidirectional | Digital Application Interface pin 12; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 101 | DAI_P15 | bidirectional | Digital Application Interface pin 15; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 102 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 103 | DAI_P11 | bidirectional | Digital Application Interface pin 11; routes any DAI SRU peripheral signal under software control; I/O/T (ipu). |
| 104 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 105 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 106 | BOOT_CFG2 | input | Boot configuration bit 2; with BOOT_CFG1-0 selects 176-pin boot mode (000=SPI slave, 001=SPI master, 010=AMI/8-bit Flash, 011=no boot, 1xx=reserved); must be valid before RESET asserts. |
| 107 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 108 | AMI_ACK | input | Asynchronous memory interface acknowledge; external device drives this pin low to insert wait states into an external memory access; I (ipu). |
| 109 | GND | power_in | Ground reference. |
| 110 | THD_M | output | Thermal diode cathode (base of on-chip PNP BJT); connect to external temperature sensor such as ADM1021A; may be left floating when thermal monitoring is not used. |
| 111 | THD_P | input | Thermal diode anode (emitter of on-chip PNP BJT); connect to external temperature sensor; may be left floating when thermal monitoring is not used. |
| 112 | VDD_THD | power_in | Thermal diode power supply; 3.13 V min, 3.47 V max; may be left unconnected when thermal diode is not used. |
| 113 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 114 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 115 | MS1 | tri_state | Memory select 1; active-low chip select for external memory bank 1; also usable for EPORT/FLASH boot mode; O/T (ipu); hi-Z during reset. |
| 116 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 117 | WDT_CLKO | output | Watchdog resonator pad output; paired with WDT_CLKIN to support an external watchdog timer clock crystal; 176-pin package only. |
| 118 | WDT_CLKIN | input | Watchdog timer clock input; pull low when watchdog timer is not used; 176-pin package only; valid clock period 100 ns-1000 ns. |
| 119 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 120 | ADDR23 | bidirectional | External address bit 23; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data input when configured via IDP_PDAP_CTL. |
| 121 | ADDR22 | bidirectional | External address bit 22; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 122 | ADDR21 | bidirectional | External address bit 21; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 123 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 124 | ADDR20 | bidirectional | External address bit 20; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 125 | ADDR19 | bidirectional | External address bit 19; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 126 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 127 | ADDR16 | bidirectional | External address bit 16; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 128 | ADDR15 | bidirectional | External address bit 15; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 129 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 130 | ADDR14 | bidirectional | External address bit 14; I/O/T (ipu); multiplexed with FLAGS15-8, PWM, and PDAP parallel data. |
| 131 | AMI_WR | tri_state | AMI port write enable; asserts (low) whenever the processor writes a word to external memory; O/T (ipu); hi-Z during reset. |
| 132 | AMI_RD | tri_state | AMI port read enable; asserts (low) whenever the processor reads a word from external memory; O/T (ipu); hi-Z during reset. |
| 133 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 134 | FLAG0 | bidirectional | General-purpose flag 0 / interrupt request IRQ0; I/O (ipu); defaults to FLAG input after reset; output pulse width 2×tPCLK−3 ns. |
| 135 | FLAG1 | bidirectional | General-purpose flag 1 / interrupt request IRQ1; I/O (ipu); defaults to FLAG input after reset. |
| 136 | FLAG2 | bidirectional | General-purpose flag 2 / interrupt request IRQ2 / memory select MS2; I/O (ipu); defaults to FLAG input after reset. |
| 137 | GND | power_in | Ground reference (non-automotive variant; automotive variant uses MLBCLK at this position). |
| 138 | FLAG3 | bidirectional | General-purpose flag 3 / core timer expiry TMREXP / memory select MS3; I/O (ipu); defaults to FLAG input after reset. |
| 139 | GND | power_in | Ground reference (non-automotive variant; automotive variant uses MLBDAT at this position). |
| 140 | GND | power_in | Ground reference (non-automotive variant; automotive variant uses MLBDO at this position). |
| 141 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 142 | GND | power_in | Ground reference (non-automotive variant; automotive variant uses MLBSIG at this position). |
| 143 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 144 | TRST | input | JTAG test reset; resets the TAP state machine; I (ipu); must be asserted (low) or held low after power-up for proper device operation; minimum pulse width 4×tCK. |
| 145 | GND | power_in | Ground reference (non-automotive variant; automotive variant uses MLBSO at this position). |
| 146 | EMU | output | Emulation status; open-drain output with internal pull-up; connect only to ADI DSP Tools JTAG emulator target board; hi-Z at reset. |
| 147 | DATA0 | bidirectional | External data bus bit 0; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 148 | DATA1 | bidirectional | External data bus bit 1; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 149 | DATA2 | bidirectional | External data bus bit 2; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 150 | DATA3 | bidirectional | External data bus bit 3; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 151 | TDO | tri_state | JTAG test data output; serial scan output of the boundary-scan path; O/T; hi-Z at reset. |
| 152 | DATA4 | bidirectional | External data bus bit 4; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 153 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 154 | DATA5 | bidirectional | External data bus bit 5; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 155 | DATA6 | bidirectional | External data bus bit 6; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 156 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 157 | DATA7 | bidirectional | External data bus bit 7; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 158 | TDI | input | JTAG test data input; provides serial data to the boundary-scan logic; I (ipu); internal pull-up resistor 26 kΩ-63 kΩ. |
| 159 | SDCLK | tri_state | SDRAM clock output; uses a dedicated clock driver (Type B) different from all other drivers; O/T (ipd); driven after reset deassertion; can drive up to 30 pF distributed load. |
| 160 | VDD_EXT | power_in | I/O power supply; 3.13 V min, 3.47 V max. |
| 161 | DATA8 | bidirectional | External data bus bit 8; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 162 | DATA9 | bidirectional | External data bus bit 9; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 163 | DATA10 | bidirectional | External data bus bit 10; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 164 | TCK | input | JTAG test clock; clocks the boundary-scan TAP; must be driven low or held low after power-up; minimum period 20 ns. |
| 165 | DATA11 | bidirectional | External data bus bit 11; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 166 | DATA12 | bidirectional | External data bus bit 12; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 167 | DATA14 | bidirectional | External data bus bit 14; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 168 | DATA13 | bidirectional | External data bus bit 13; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 169 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 170 | DATA15 | bidirectional | External data bus bit 15; I/O/T (ipu); multiplexed with FLAGS7-0; hi-Z during reset. |
| 171 | SDWE | tri_state | SDRAM write enable; connects to SDRAM WE pin; together with SDRAS/SDCAS/SDCKE defines the SDRAM command; O/T (ipu); drives high after reset deassertion. |
| 172 | SDRAS | tri_state | SDRAM row address strobe; connects to SDRAM RAS pin; together with SDCAS/SDWE/SDCKE defines the SDRAM command; O/T (ipu); drives high after reset deassertion. |
| 173 | RESET | input | Processor reset; active-low; resets the processor to a known state; must be asserted low at power-up; PLL lock delay of 4096 CLKIN cycles follows deassertion before core execution begins. |
| 174 | TMS | input | JTAG test mode select; controls the TAP state machine; I (ipu); setup time 5 ns before TCK rising edge. |
| 175 | SDCAS | tri_state | SDRAM column address strobe; connects to SDRAM CAS pin; together with SDRAS/SDWE/SDCKE defines the SDRAM command; O/T (ipu); drives high after reset deassertion. |
| 176 | VDD_INT | power_in | Internal (core) power supply; 1.05 V min, 1.10 V nom, 1.15 V max. |
| 177 | GND | power_in | Exposed ground pad; must be soldered to a matching GND PCB pad connected to the board ground plane for optimal electrical and thermal performance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | LQFP-176-EP(24x24) |
| Category | Embedded Processors & Controllers |
| Pins | 177 |
CAD (KiCad official)
- Symbol:
ADSP-21489KSWZ-4B - Footprint:
Package_QFP:LQFP-176-1EP_24x24mm_P0.5mm_EP6.6x6.6mm - 3D model: LQFP-176-EP(24x24), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.5 mm nominal LQFP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
adsp-21489kswz-4b-etched.step/adsp-21489kswz-4b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adsp-21489kswz-4b.step/adsp-21489kswz-4b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (68 pp, sha256
7073853682aa6e48, retrieved 2026-10-01, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).