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STC32G8K64-42I-TSSOP20
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STC Micro Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTC32G8K64-42I-TSSOP20
STC Micro · Microcontroller Units (MCUs/MPUs/SOCs) · TSSOP-20
STC32G8K64-42I-TSSOP20 from STC Micro, in a TSSOP-20. 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 | P1.4 | bidirectional | Standard I/O port pin with alternate functions ADC4, PWM3P, MISO, S1MISO, S2MISO and SDA (I2C data). |
| 2 | P1.5 | bidirectional | Standard I/O port pin with alternate functions ADC5, PWM3N, SCLK, S1SCLK, S2SCLK, SCL and I2SCK_2. |
| 3 | P1.6 | bidirectional | Standard I/O port pin with alternate functions ADC6, RxD_3, PWM4P, MCLKO_2, XTALO (external crystal output) and I2SMCK_2/I2SMCK_4. |
| 4 | P1.7 | bidirectional | Standard I/O port pin with alternate functions ADC7, TxD_3, PWM4N, PWM5_2 and XTALI (external crystal or clock input). |
| 5 | P1.3 | bidirectional | Standard I/O port pin with alternate functions ADC3, MOSI, S1MOSI, S2MOSI, PWM2N, T2CLKO and I2SData_2. |
| 6 | P1.2 | bidirectional | Standard I/O port pin with alternate functions PWM2P, SS, S1SS, S2SS and T2 (timer 2 external clock input). |
| 7 | P5.4 | bidirectional | Standard I/O port pin that can be configured as the active-low reset input nRST, with alternate functions ADC2, MCLKO, SS and PWM6_2. |
| 8 | Vcc | power_in | Power supply pin for the MCU core and I/O, which also feeds AVcc for the ADC. |
| 9 | ADC_VRef+ | input | ADC external reference voltage pin that must be connected to an external reference of 2.4V to MCU-VCC, since floating it causes leakage current. |
| 10 | Gnd | power_in | Ground pin, which is also the ADC analog ground AGnd. |
| 11 | P3.0 | bidirectional | Standard I/O port pin with alternate functions UART1 receive RxD and external interrupt INT4, and it is weakly pulled up after power-on. |
| 12 | P3.1 | bidirectional | Standard I/O port pin with alternate function UART1 transmit TxD, and it is weakly pulled up after power-on. |
| 13 | P3.2 | bidirectional | Standard I/O port pin with alternate functions external interrupt INT0, SCLK_4, SCL_4, PWMETI, PWMETI2 and I2SCK; it is high level during power-on reset. |
| 14 | P3.3 | bidirectional | Standard I/O port pin with alternate functions external interrupt INT1, MISO_4, SDA_4, PWM4N_4 and PWM7_2. |
| 15 | P3.4 | bidirectional | Standard I/O port pin with alternate functions T0 external clock input, T1CLKO, MOSI_4, PWM4P_4, PWM8_2, comparator output CMPO and I2SData. |
| 16 | P3.5 | bidirectional | Standard I/O port pin with alternate functions T1 external clock input, T0CLKO, SS_4, PWM fault input PWMFLT and I2SLRCK. |
| 17 | P3.6 | bidirectional | Standard I/O port pin with alternate functions external interrupt INT2, UART1 receive RxD_2 and comparator negative input CMP-. |
| 18 | P3.7 | bidirectional | Standard I/O port pin with alternate functions external interrupt INT3, TxD_2 and comparator positive input CMP+. |
| 19 | P1.1 | bidirectional | Standard I/O port pin with alternate functions ADC1, PWM1N and UART2 transmit TxD2. |
| 20 | P1.0 | bidirectional | Standard I/O port pin with alternate functions ADC0, PWM1P and UART2 receive RxD2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STC Micro |
| Package | TSSOP-20 |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 20 |
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 | 1.9 | 5.5 | V | 工作温度低于-40℃时，工作电压不得低于 3.0V | 1656 | ||
| VDD to ground voltage | VDD | -0.3 | 5.5 | V | 1656 | ||
| I/O port voltage to ground | -0.3 | V | max printed as VDD+0.3 | 1656 | |||
| Operating temperature | -40 | 85 | ℃ | 使用内部高速 IRC 和外部晶振 | 1656 | ||
| Operating temperature | -40 | 125 | ℃ | 1656 | |||
| Storage temperature | -55 | 155 | ℃ | 1656 | |||
| Internal IRC frequency drift | -0.88 | 1.05 | % | -20℃~65℃, reference temperature 25℃ | 1656 | ||
| Internal IRC frequency drift | -1.38 | 1.42 | % | -40℃~85℃, reference temperature 25℃ | 1656 | ||
| Internal IRC frequency drift | -3 | 3 | % | -40℃~125℃, reference temperature 25℃ | 1656 | ||
| POR threshold | 1.9 | V | 测试温度 25℃ | 1656 | |||
| LVR0 threshold | 2 | V | 测试温度 25℃ | 1656 | |||
| LVR1 threshold | 2.4 | V | 测试温度 25℃ | 1656 | |||
| LVR2 threshold | 2.7 | V | 测试温度 25℃ | 1656 | |||
| LVR3 threshold | 3 | V | 测试温度 25℃ | 1656 | |||
| Input low voltage | VIL1 | 1.32 | V | 打开施密特触发, VDD=5.0V, 25℃ | 1657 | ||
| Input low voltage | VIL1 | 1.48 | V | 关闭施密特触发, VDD=5.0V, 25℃ | 1657 | ||
| Input high voltage (normal I/O) | VIH1 | 1.6 | V | 打开施密特触发, VDD=5.0V, 25℃ | 1657 | ||
| Input high voltage (normal I/O) | VIH1 | 1.54 | V | 关闭施密特触发, VDD=5.0V, 25℃ | 1657 | ||
| Output low sink current | IOL1 | 20 | mA | 端口电压 0.45V, VDD=5.0V, 25℃ | 1657 | ||
| Output high current (bidirectional mode) | IOH1 | 200 | uA | VDD=5.0V, 25℃ | 1657 | ||
| Output high current (push-pull mode) | IOH2 | 20 | mA | 端口电压 2.4V, VDD=5.0V, 25℃ | 1657 | ||
| Logic 0 input current | IIL | 50 | uA | 端口电压 0V, VDD=5.0V, 25℃ | 1657 | ||
| Logic 1 to 0 transition current | ITL | 100 | 270 | 600 | uA | 端口电压 2.0V, VDD=5.0V, 25℃ | 1657 |
| I/O pull-up resistance | RPU | 4.1 | 4.2 | 4.4 | KΩ | VDD=5.0V, 25℃ | 1657 |
| Normal operating mode current | ICC | 4 | 20 | mA | VDD=5.0V, 25℃ | 1657 | |
| Power-down mode current | IPD | 1 | uA | VDD=5.0V, 25℃ | 1657 | ||
| Power-down wake-up timer current | IWKT | 4.1 | uA | VDD=5.0V, 25℃ | 1657 | ||
| Low-voltage detect module current | ILVD | 425 | uA | VDD=5.0V, 25℃ | 1657 | ||
| Idle mode current (6MHz) | IIDL | 1.55 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Idle mode current (11.0592MHz) | IIDL | 2.34 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Idle mode current (24MHz) | IIDL | 3.93 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Idle mode current (internal 32KHz) | IIDL | 0.57 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Normal mode current (6MHz) | INOR | 2.2 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Normal mode current (11.0592MHz) | INOR | 3.61 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Normal mode current (24MHz) | INOR | 6.45 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Normal mode current (internal 32KHz) | INOR | 0.57 | mA | VDD=5.0V, 25℃ | 1657 | ||
| Power-down mode power with comparator enabled | IPD2 | 460 | uA | VDD=5.0V, 25℃ | 1657 | ||
| Power-down mode power with LVD enabled | IPD3 | 520 | uA | VDD=5.0V, 25℃ | 1657 |
CAD (KiCad official)
- Symbol:
STC32G8K64-42I-TSSOP20 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
stc32g8k64-42i-tssop20-etched.step/stc32g8k64-42i-tssop20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stc32g8k64-42i-tssop20.step/stc32g8k64-42i-tssop20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STC Micro datasheet (1887 pp, sha256
59bba1d366cc8d33, retrieved 2026-10-26, 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-haiku-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).