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PMS161-S08A
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PADAUK Tech Microcontroller Units (MCUs/MPUs/SOCs), SOP-8. 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
markdownPMS161-S08A
PADAUK Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SOP-8
PMS161-S08A from PADAUK Tech, in a SOP-8. 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 | VDD/AVDD | power_in | Positive supply (VDD digital, AVDD analog, bonded together internally); operating range 2.2V to 5.5V (2.0V limited by LVR), absolute maximum 5.5V. |
| 2 | PA7/CS | bidirectional | Port A bit 7 or external touch capacitor CS pin (selected by PA7_Sel code option); clear padier bit 7 to reduce leakage when used as CS. |
| 3 | PA6/TK1 | bidirectional | Port A bit 6 with weak pull-up option, or touch key 1; analog input capable, clear padier bit 6 to reduce leakage. |
| 4 | PA5/TK0/INT0/PRSTB/VPP | bidirectional | Port A bit 5 with weak pull-up/pull-down, touch key 0, external interrupt 0 on both edges, external reset input, or VPP during programming. |
| 5 | PA3/TK2/CIN- | bidirectional | Port A bit 3 with weak pull-up/pull-down, touch key 2, or comparator negative input; clear padier bit 3 to reduce leakage when analog. |
| 6 | PA4/TK3/CIN- | bidirectional | Port A bit 4 with weak pull-up/pull-down, touch key 3, or comparator input; clear padier bit 4 to reduce leakage when analog. |
| 7 | PA0/INT0/TK4 | bidirectional | Port A bit 0 with weak pull-up/pull-down, external interrupt 0 on both edges, or touch key 4; clear padier bit 0 to reduce leakage when analog. |
| 8 | GND/AGND | power_in | Ground (GND digital, AGND analog, bonded together internally). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PADAUK Tech |
| Package | SOP-8 |
| Category | Embedded Processors & Controllers |
| Pins | 8 |
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 (touch applications) | VDD | 2.2 | 5.5 | V | # 对于触摸应用 | 12 | |
| Operating voltage | VDD | 2 | 5.5 | V | 12 | ||
| Low voltage reset tolerance | LVR% | -5 | 5 | % | 12 | ||
| System clock (CLK) = IHRC/2 | fSYS | 0 | 8 | MHz | VDD ≧ 3.5V | 12 | |
| System clock (CLK) = IHRC/4 | fSYS | 0 | 4 | MHz | VDD ≧ 2.5V | 12 | |
| System clock (CLK) = IHRC/8 | fSYS | 0 | 2 | MHz | VDD ≧ 2.2V | 12 | |
| Operating current, fSYS = IHRC/16 | IOP | 0.5 | mA | fSYS=IHRC/16=[email protected] | 12 | ||
| Operating current, fSYS = ILRC | IOP | 32 | uA | fSYS=ILRC=[email protected] | 12 | ||
| Power-down mode current (stopsys) | IPD | 0.2 | uA | VDD =5V | 12 | ||
| Power-down mode current (stopsys) | IPD | 0.1 | uA | VDD =3V | 12 | ||
| Power-down mode current (stopsys) | IPD | 0.6 | uA | VDD =5V, NILRC Enable | 12 | ||
| Power-down mode current (stopsys) | IPD | 0.3 | uA | VDD =3V, NILRC Enable | 12 | ||
| Power-saving mode current (stopexe) | IPS | 2.1 | uA | *停用 IHRC; VDD =5V | 12 | ||
| Power-saving mode current (stopexe) | IPS | 0.8 | uA | *停用 IHRC; VDD =3V | 12 | ||
| Input low voltage | VIL | 0 | V | 12 | |||
| Input low voltage | VIL | 0.1 | VDD | 12 | |||
| Input high voltage | VIH | 0.7 | VDD | 12 | |||
| Input voltage | VIN | -0.3 | V | 12 | |||
| Calibrated IHRC frequency | fIHRC | 15.76 | 16 | 16.24 | MHz | 25°C, VDD =2.2V~5.5V | 12 |
| Calibrated IHRC frequency | fIHRC | 15.2 | 16 | 16.8 | MHz | VDD =2.2V~5.5V, -20°C <Ta<70°C | 12 |
| Calibrated IHRC frequency | fIHRC | 14.6 | 16 | 17.4 | MHz | VDD =2.0V~5.5V, -20°C <Ta<70°C | 12 |
| Supply voltage (absolute maximum range) | VDD | 2.2 | 5.5 | V | 对于触摸应用; 最大电压不能超过5.5V | 13 | |
| Operating temperature | -20 | 70 | °C | 13 | |||
| Junction temperature | -50 | 125 | °C | 13 | |||
| Storage temperature | 150 | °C | 13 | ||||
| System clock (CLK) = ILRC | fSYS | 40 | KHz | VDD =5V | 12 | ||
| ILRC frequency | fILRC | 40 | KHz | VDD=5.0V | 12 | ||
| NILRC frequency | fNILRC | 12.5 | KHz | VDD = 5.0V | 12 | ||
| Interrupt pulse width | tINT | 30 | ns | VDD = 5.0V | 12 | ||
| Watchdog timeout period | tWDT | 8192 | ILRC clock period | misc[1:0]=00 (default) | 13 | ||
| Watchdog timeout period | tWDT | 16384 | ILRC clock period | misc[1:0]=01 | 13 | ||
| Watchdog timeout period | tWDT | 65536 | ILRC clock period | misc[1:0]=10 | 13 | ||
| Watchdog timeout period | tWDT | 262144 | ILRC clock period | misc[1:0]=11 | 13 | ||
| Fast wake-up time | tWUP | 45 | TILRC | 快速唤醒时间 | 13 | ||
| Normal wake-up time | 3000 | TILRC | 正常唤醒时间 | 13 | |||
| System start-up time | tSBP | 50 | ms | @ VDD =5V | 13 | ||
| External reset pulse width | tRST | 120 | us | @ VDD =5V | 13 | ||
| IO output sink current (normal output) | IOL | 18 | mA | VDD=5.0V, VOL=0.5V | 12 | ||
| IO output drive current (normal output) | IOH | 13 | mA | VDD=5.0V, VOH=4.5V | 12 | ||
| Pull-up resistor | RPH | 78 | KΩ | VDD=5.0V | 12 | ||
| Pull-down resistor | RPL | 70 | KΩ | VDD=5.0V | 12 | ||
| Pin injection current | IINJ (PIN) | 1 | uA | VDD +0.3≧VIN≧ -0.3 | 12 |
CAD (KiCad official)
- Symbol:
PMS161-S08A - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
pms161-s08a-etched.step/pms161-s08a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pms161-s08a.step/pms161-s08a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PADAUK Tech datasheet (77 pp, sha256
72eab28884ea32af, 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-sonnet-5-5(text+vision), consensusclaude-opus-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).