component
SYN6658
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Beijing Yu tone World Tech Audio Interface ICs, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownSYN6658
Beijing Yu tone World Tech · Audio Interface ICs · LQFP-64(10x10)
SYN6658 from Beijing Yu tone World Tech, in a LQFP-64(10x10). 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 | VDD1 | power_in | 1.2V digital power supply input. |
| 2 | UVDD | power_in | 3.3V analog power supply input. |
| 3 | RREF | passive | Reference voltage pin, connect a 10K pull-down resistor. |
| 4 | UVSS | power_in | Digital ground. |
| 5 | NC | unconnected | No connection. |
| 6 | NC | unconnected | No connection. |
| 7 | HPVDD | power_in | 3.3V analog power supply input. |
| 8 | AO_P | output | Audio output, positive. |
| 9 | AO_N | output | Audio output, negative. |
| 10 | HPVSS | power_in | Analog ground. |
| 11 | VCM2 | passive | Connect an external 10uF filter capacitor. |
| 12 | VCM3 | passive | Connect an external 10uF filter capacitor. |
| 13 | NC | unconnected | No connection. |
| 14 | AVSS | power_in | Analog ground. |
| 15 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 16 | DAT7# | bidirectional | Digital signal line. |
| 17 | AVDD | power_in | 3.3V analog power supply input (supplied from pin 22 VDDIO1_O). |
| 18 | VREF | power_in | Reference voltage pin, connect a 100nF filter capacitor. |
| 19 | NC | unconnected | No connection. |
| 20 | VDD_I2 | power_in | Chip power supply input (POWER_IN). |
| 21 | DAT0# | bidirectional | Digital signal line. |
| 22 | VDDIO1_O | power_out | 3.3V output with maximum drive current 100mA, supplies pin 17 AVDD and pin 46 VDDIO2. |
| 23 | VDD2_O | power_out | 1.2V output that supplies pin 1 VDD1. |
| 24 | PLL_V12 | passive | Connect an external filter capacitor of 0.1~1uF. |
| 25 | VSSIO1 | power_in | Digital ground. |
| 26 | XTAL12MI | input | 12M crystal oscillator input. |
| 27 | XTAL12MO | output | 12M crystal oscillator output. |
| 28 | #RST | input | Reset, active low. |
| 29 | SOP1# | input | Connect an external 100K pull-up resistor. |
| 30 | NC | unconnected | No connection. |
| 31 | VDD_I1 | power_in | Chip power supply input (POWER_IN). |
| 32 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 33 | SW12 | passive | Requires an external 10uH inductor and a Schottky diode. |
| 34 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 35 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 36 | SVDD | power_in | 3.3V digital power supply input. |
| 37 | VSSIO2 | power_in | Digital ground. |
| 38 | VDD3_O | power_out | 1.2V digital power output. |
| 39 | RXD/WakeUP2 | input | UART receive / WakeUP2; connect an external 10k pull-up resistor when unused. |
| 40 | R/B | output | Chip busy status indicator; low level means idle. |
| 41 | TXD/WakeUP3 | output | UART transmit / WakeUP3. |
| 42 | SCLK# | input | SPI_SCLK, SPI clock. |
| 43 | SSEL# | input | SPI_SSEL, SPI slave select. |
| 44 | SDI# | input | SPI_MOSI, SPI data input. |
| 45 | SDO# | output | SPI_MISO, SPI data output. |
| 46 | VDDIO2 | power_in | 3.3V digital power supply input. |
| 47 | WakeUp1 | input | Wake-up pin 1. |
| 48 | WakeUp0 | input | Wake-up pin 0. |
| 49 | DAT1# | bidirectional | Digital signal line. |
| 50 | DAT2# | bidirectional | Digital signal line. |
| 51 | DAT3# | bidirectional | Digital signal line. |
| 52 | VSSIO3 | power_in | Digital ground. |
| 53 | SOP2# | input | Connect an external 100K pull-up resistor. |
| 54 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 55 | BAUD1 | input | Baud rate configuration port 1. |
| 56 | BAUD0 | input | Baud rate configuration port 0. |
| 57 | DAT4# | bidirectional | Digital signal line. |
| 58 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 59 | DAT5# | bidirectional | Digital signal line. |
| 60 | DAT6# | bidirectional | Digital signal line. |
| 61 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 62 | TEST | input | Test pin; connect an external 10K pull-up resistor. |
| 63 | Undefined | unconnected | Undefined pin; no function given in the datasheet. |
| 64 | SVSS | power_in | Digital ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Beijing Yu tone World Tech |
| Package | LQFP-64(10x10) |
| Category | Interface ICs |
| Pins | 64 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage (abs max) | VDD_I1/VDD_I2 | -0.3 | 4.5 | V | 21 | ||
| Digital supply voltage (abs max) | VDD1 | -0.3 | 1.32 | V | 21 | ||
| Digital I/O voltage (abs max) | VDDIO2 | -0.3 | 3.63 | V | 21 | ||
| Digital I/O voltage (abs max) | SVDD | -0.5 | 4 | V | 21 | ||
| Analog supply voltage (abs max) | UVDD | -0.3 | 3.63 | V | 21 | ||
| Analog supply voltage (abs max) | HPVDD | -0.3 | 3.4 | V | 21 | ||
| Operating temperature range | To | -40 | 85 | ℃ | 21 | ||
| Storage temperature | Ts | -55 | 125 | ℃ | 21 | ||
| Operating voltage | VDD_I1/VDD_I2 | 3.1 | 3.6 | 4.5 | V | 21 | |
| Digital supply voltage | VDD1 | 1.08 | 1.2 | 1.32 | V | 21 | |
| Digital I/O voltage | VDDIO2 | 2.97 | 3.3 | 3.63 | V | 21 | |
| Digital I/O voltage | SVDD | 3 | 3.3 | 3.63 | V | 21 | |
| Analog supply voltage | UVDD | 3 | 3.3 | 3.63 | V | 21 | |
| Analog supply voltage | AVDD | 3.15 | 3.3 | 3.63 | V | 21 | |
| Input high voltage | VIH | 2 | V | max printed as VDDIO+0.3 | 22 | ||
| Input low voltage | VIL | -0.3 | 0.8 | V | 22 | ||
| Output high voltage | VOH | 2.4 | V | 22 | |||
| Output low voltage | VOL | 0.4 | V | 22 | |||
| Input leakage current | IL | -1 | 1 | uA | 22 | ||
| Tri-state output leakage current | IOZ | -1 | 1 | uA | 22 | ||
| Stereo output load resistance | Rlineout | 10 | Kohm | 22 | |||
| Headphone output load resistance | RHP | 32 | ohm | 22 | |||
| Audio DAC operating voltage | 3 | 3.3 | 3.6 | V | Audio DAC characteristics | 22 | |
| Audio DAC min HP load resistance | 32 | Ω | Audio DAC characteristics | 22 | |||
| Audio DAC max output voltage | 0.8 | Vrms | Audio DAC characteristics | 22 | |||
| Audio DAC max output power | 20 | mW | Audio DAC characteristics | 22 |
CAD (KiCad official)
- Symbol:
SYN6658 - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
syn6658-etched.step/syn6658-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);syn6658.step/syn6658.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Beijing Yu tone World Tech datasheet (42 pp, sha256
7e3e67ef074c4eca, retrieved 2026-10-22, 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 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).