STC8A8K64D4-45I-LQFP64

@@ -0,0 +1,109 @@+# STC8A8K64D4-45I-LQFP64++**STC Micro** · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)++STC8A8K64D4-45I-LQFP64 from STC Micro, in a LQFP-64(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | P5.2/RxD4_2 | bidirectional | General-purpose I/O P5.2. Alternate function: UART4 receive input (RxD4_2 remap). |+| 2 | P5.3/TxD4_2 | bidirectional | General-purpose I/O P5.3. Alternate function: UART4 transmit output (TxD4_2 remap). |+| 3 | P1.1/ADC1/PWM1_2/TxD2 | bidirectional | General-purpose I/O P1.1. Muxable to ADC channel 1, enhanced PWM channel 1 (route 2), or UART2 transmit output. |+| 4 | P1.2/ADC2/PWM2_2/SS/T2/ECI/ADC_ETR | bidirectional | General-purpose I/O P1.2. Muxable to ADC channel 2, PWM2 (route 2), SPI slave-select, Timer2 external clock, PCA external clock (ECI), or ADC external trigger. |+| 5 | P1.3/ADC3/PWM3_2/MOSI/T2CLKO | bidirectional | General-purpose I/O P1.3. Muxable to ADC channel 3, PWM3 (route 2), SPI MOSI, or Timer2 clock-divide output. |+| 6 | P6.0/PWM0_3 | bidirectional | General-purpose I/O P6.0. Alternate: enhanced PWM channel 0 output (route 3). |+| 7 | P6.1/PWM1_3 | bidirectional | General-purpose I/O P6.1. Alternate: enhanced PWM channel 1 output (route 3). |+| 8 | P6.2/PWM2_3 | bidirectional | General-purpose I/O P6.2. Alternate: enhanced PWM channel 2 output (route 3). |+| 9 | P6.3/PWM3_3 | bidirectional | General-purpose I/O P6.3. Alternate: enhanced PWM channel 3 output (route 3). |+| 10 | P1.4/ADC4/PWM4_2/MISO/SDA/CCP3 | bidirectional | General-purpose I/O P1.4. Muxable to ADC channel 4, PWM4 (route 2), SPI MISO, I2C data (SDA), or PCA/CCP channel 3. |+| 11 | P4.4/RD/TxD_4 | bidirectional | General-purpose I/O P4.4. Alternate: external bus RD (read strobe) output, or UART1 transmit output (route 4). |+| 12 | P1.5/ADC5/PWM5_2/SCLK/SCL/CCP2 | bidirectional | General-purpose I/O P1.5. Muxable to ADC channel 5, PWM5 (route 2), SPI clock, I2C clock (SCL), or PCA/CCP channel 2. |+| 13 | P1.6/ADC6/RxD_3/PWM6_2/MCLKO_2/CCP1/XTALO | bidirectional | General-purpose I/O P1.6. Muxable to ADC channel 6, UART1 RX (route 3), PWM6 (route 2), master-clock divide output, PCA/CCP channel 1, or external crystal output XTALO. |+| 14 | P1.7/ADC7/TxD_3/PWM7_2/CCP0/XTALI | bidirectional | General-purpose I/O P1.7. Muxable to ADC channel 7, UART1 TX (route 3), PWM7 (route 2), PCA/CCP channel 0, or external crystal input XTALI. |+| 15 | ADC_AGnd | power_in | ADC analog ground reference. Tie to system ground through a clean return, ideally via a single-point star to reduce digital noise coupling. |+| 16 | ADC_VRef+ | input | External ADC positive reference voltage input (AVref). Sets ADC full-scale; decouple with ~0.1 uF and larger bulk cap to ADC_AGnd. |+| 17 | ADC_AVcc | power_in | ADC analog supply. Connect to VCC through a ferrite bead or small RC filter and decouple to ADC_AGnd for best ADC accuracy. |+| 18 | P5.4/nRST/MCLKO | bidirectional | General-purpose I/O P5.4. Alternate: active-low external reset input nRST (enabled via RSTCFG) or master-clock divide output MCLKO. |+| 19 | VCC | power_in | Main digital supply (typ 2.5-5.5 V). Decouple with ~0.1 uF ceramic close to the pin plus a larger bulk capacitor (~10 uF) between VCC and GND. |+| 20 | P5.5 | bidirectional | General-purpose I/O P5.5. No datasheet-listed alternate peripheral function. |+| 21 | GND | power_in | Digital ground. Star-connect analog and digital grounds at this node when possible. |+| 22 | P4.0/WR_3/RxD2_2 | bidirectional | General-purpose I/O P4.0. Alternate: external bus WR write strobe (route 3) or UART2 receive (route 2). |+| 23 | P6.4/PWM4_3 | bidirectional | General-purpose I/O P6.4. Alternate: enhanced PWM channel 4 output (route 3). |+| 24 | P6.5/PWM5_3 | bidirectional | General-purpose I/O P6.5. Alternate: enhanced PWM channel 5 output (route 3). |+| 25 | P6.6/PWM6_3 | bidirectional | General-purpose I/O P6.6. Alternate: enhanced PWM channel 6 output (route 3). |+| 26 | P6.7/PWM7_3 | bidirectional | General-purpose I/O P6.7. Alternate: enhanced PWM channel 7 output (route 3). |+| 27 | P3.0/RxD/CCP3_4/INT4 | bidirectional | General-purpose I/O P3.0. Alternate: UART1 receive (RxD), PCA/CCP channel 3 (route 4), or external interrupt 4. |+| 28 | P3.1/TxD/CCP2_4 | bidirectional | General-purpose I/O P3.1. Alternate: UART1 transmit (TxD) or PCA/CCP channel 2 (route 4). |+| 29 | P3.2/INT0/CCP1_4/SCLK_4/SCL_4 | bidirectional | General-purpose I/O P3.2. Alternate: external interrupt 0, PCA/CCP channel 1 (route 4), SPI clock (route 4), or I2C clock SCL (route 4). |+| 30 | P3.3/INT1/CCP0_4/MISO_4/SDA_4 | bidirectional | General-purpose I/O P3.3. Alternate: external interrupt 1, PCA/CCP channel 0 (route 4), SPI MISO (route 4), or I2C data SDA (route 4). |+| 31 | P3.4/T0/T1CLKO/MOSI_4/CMPO | bidirectional | General-purpose I/O P3.4. Alternate: Timer0 external clock input, Timer1 clock-divide output, SPI MOSI (route 4), or comparator output CMPO. |+| 32 | P3.5/T1/T0CLKO/ECI_4/SS_4/PWMFLT | bidirectional | General-purpose I/O P3.5. Alternate: Timer1 external clock input, Timer0 clock-divide output, PCA external clock ECI (route 4), SPI slave-select (route 4), or PWM fault input. |+| 33 | P5.0/RxD3_2/CMP+_2 | bidirectional | General-purpose I/O P5.0. Alternate: UART3 receive (route 2) or comparator positive input (CMP+_2). |+| 34 | P5.1/TxD3_2/CMP+_3 | bidirectional | General-purpose I/O P5.1. Alternate: UART3 transmit (route 2) or comparator positive input (CMP+_3). |+| 35 | P3.6/INT2/WR_2/RxD_2/CMP- | bidirectional | General-purpose I/O P3.6. Alternate: external interrupt 2, external bus WR (route 2), UART1 RX (route 2), or comparator negative input CMP-. |+| 36 | P3.7/INT3/RD_2/TxD_2/CMP+ | bidirectional | General-purpose I/O P3.7. Alternate: external interrupt 3, external bus RD (route 2), UART1 TX (route 2), or comparator positive input CMP+. |+| 37 | P4.1/ALE/CMPO_2 | bidirectional | General-purpose I/O P4.1. Alternate: external-bus address latch enable ALE, or comparator output CMPO (route 2). |+| 38 | P7.0/CCP0_3 | bidirectional | General-purpose I/O P7.0. Alternate: PCA/CCP channel 0 (route 3). |+| 39 | P7.1/CCP1_3 | bidirectional | General-purpose I/O P7.1. Alternate: PCA/CCP channel 1 (route 3). |+| 40 | P7.2/CCP2_3 | bidirectional | General-purpose I/O P7.2. Alternate: PCA/CCP channel 2 (route 3). |+| 41 | P7.3/CCP3_3 | bidirectional | General-purpose I/O P7.3. Alternate: PCA/CCP channel 3 (route 3). |+| 42 | P2.0/A8/PWM0 | bidirectional | General-purpose I/O P2.0. Alternate: external-bus address line A8 or enhanced PWM channel 0 output. |+| 43 | P4.2/RD_3/TxD2_2 | bidirectional | General-purpose I/O P4.2. Alternate: external-bus RD strobe (route 3) or UART2 transmit (route 2). |+| 44 | P2.1/A9/PWM1 | bidirectional | General-purpose I/O P2.1. Alternate: external-bus address line A9 or enhanced PWM channel 1 output. |+| 45 | P2.2/A10/PWM2/SS_2/ECI_2 | bidirectional | General-purpose I/O P2.2. Alternate: address A10, PWM channel 2 output, SPI slave-select (route 2), or PCA external clock ECI (route 2). |+| 46 | P2.3/A11/PWM3/MOSI_2/CCP0_2 | bidirectional | General-purpose I/O P2.3. Alternate: address A11, PWM channel 3 output, SPI MOSI (route 2), or PCA/CCP channel 0 (route 2). |+| 47 | P2.4/A12/PWM4/MISO_2/SDA_2/CCP1_2 | bidirectional | General-purpose I/O P2.4. Alternate: address A12, PWM channel 4 output, SPI MISO (route 2), I2C data (route 2), or PCA/CCP channel 1 (route 2). |+| 48 | P2.5/A13/PWM5/SCLK_2/SCL_2/CCP2_2 | bidirectional | General-purpose I/O P2.5. Alternate: address A13, PWM channel 5 output, SPI clock (route 2), I2C clock (route 2), or PCA/CCP channel 2 (route 2). |+| 49 | P2.6/A14/PWM6/CCP3_2 | bidirectional | General-purpose I/O P2.6. Alternate: address A14, PWM channel 6 output, or PCA/CCP channel 3 (route 2). |+| 50 | P2.7/A15/PWM7 | bidirectional | General-purpose I/O P2.7. Alternate: address A15 or enhanced PWM channel 7 output. |+| 51 | P0.0/AD0/ADC8/RxD3 | bidirectional | General-purpose I/O P0.0. Alternate: multiplexed address/data AD0, ADC channel 8, or UART3 receive. |+| 52 | P0.1/AD1/ADC9/TxD3 | bidirectional | General-purpose I/O P0.1. Alternate: AD1, ADC channel 9, or UART3 transmit. |+| 53 | P0.2/AD2/ADC10/RxD4 | bidirectional | General-purpose I/O P0.2. Alternate: AD2, ADC channel 10, or UART4 receive. |+| 54 | P7.4/SS_3/ECI_3 | bidirectional | General-purpose I/O P7.4. Alternate: SPI slave-select (route 3) or PCA external clock ECI (route 3). |+| 55 | P7.5/MOSI_3 | bidirectional | General-purpose I/O P7.5. Alternate: SPI MOSI (route 3). |+| 56 | P7.6/MISO_3/SDA_3 | bidirectional | General-purpose I/O P7.6. Alternate: SPI MISO (route 3) or I2C data (route 3). |+| 57 | P7.7/SCLK_3/SCL_3 | bidirectional | General-purpose I/O P7.7. Alternate: SPI clock (route 3) or I2C clock (route 3). |+| 58 | P4.3/WR/RxD_4 | bidirectional | General-purpose I/O P4.3. Alternate: external-bus WR strobe or UART1 receive (route 4). |+| 59 | P0.3/AD3/ADC11/TxD4 | bidirectional | General-purpose I/O P0.3. Alternate: AD3, ADC channel 11, or UART4 transmit. |+| 60 | P0.4/AD4/ADC12/T3 | bidirectional | General-purpose I/O P0.4. Alternate: AD4, ADC channel 12, or Timer3 external clock input. |+| 61 | P0.5/AD5/ADC13/T3CLKO | bidirectional | General-purpose I/O P0.5. Alternate: AD5, ADC channel 13, or Timer3 clock-divide output. |+| 62 | P0.6/AD6/ADC14/T4 | bidirectional | General-purpose I/O P0.6. Alternate: AD6, ADC channel 14, or Timer4 external clock input. |+| 63 | P0.7/AD7/T4CLKO | bidirectional | General-purpose I/O P0.7. Alternate: AD7 or Timer4 clock-divide output. |+| 64 | P1.0/ADC0/PWM0_2/RxD2 | bidirectional | General-purpose I/O P1.0. Alternate: ADC channel 0, enhanced PWM channel 0 (route 2), or UART2 receive. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STC Micro |+| Package | LQFP-64(10x10) |+| Category | MCU |+| Pins | 64 |++## Ordering variants++- `STC8A8K64D4-45I-LQFP64LQFP64`+- `STC8A8K64D4-45I-LQFP64QFN64`+- `STC8A8K64D4-45I-LQFP64LQFP48`+- `STC8A8K64D4-45I-LQFP64QFN48`+- `STC8A8K64D4-45I-LQFP64LQFP44`+- `STC8A8K64D4-45I-LQFP64PDIP40`++## CAD (KiCad official)++- Symbol: `STC8A8K64D4-45I-LQFP64`+- Footprint: `Package_QFP:LQFP-64_10x10mm_P0.5mm`+- 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STC Micro datasheet](docs/stc8a8k64d4-45i-lqfp64-datasheet.pdf) (1168 pp, sha256 `0df2991ceeae5ee1`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/stc8a8k64d4-45i-lqfp64-datasheet.pdf)