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Contents

README

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PFS154-S16

PADAUK Tech · Microcontrollers (MCU/MPU/SOC) · SOP-16

PFS154-S16 from PADAUK Tech, in a SOP-16. 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 PB4/TM2PWM/PG0PWM bidirectional Port B bit 4 digital input or two-state output with optional pull-up, Timer2 output or PWMG0 output; digital input must be disabled via pbdier bit 4 when used as analog input.
2 PB5/TM3PWM/PG0PWM bidirectional Port B bit 5 digital input or two-state output with optional pull-up, Timer3 output or PWMG0 output; can wake the system unless pbdier bit 5 is 0.
3 PB6/TM3PWM/CIN2-/PG1PWM bidirectional Port B bit 6 digital I/O with optional pull-up, comparator minus input 2, Timer3 output or PWMG1 output; disable digital input via pbdier bit 6 when used as analog input.
4 PB7/TM3PWM/CIN3-/PG1PWM bidirectional Port B bit 7 digital I/O with optional pull-up, comparator minus input 3, Timer3 output or PWMG1 output; disable digital input via pbdier bit 7 when used as analog input.
5 VDD power_in Positive power supply, operating range 2.0V to 5.5V.
6 PA7/X1 bidirectional Port A bit 7 digital I/O with optional pull-up, or crystal oscillator X1; disable digital input via padier bit 7 when used for crystal.
7 PA6/X2 bidirectional Port A bit 6 digital I/O with optional pull-up, or crystal oscillator X2; disable digital input via padier bit 6 when used for crystal.
8 PA5/PRST#/PG2PWM bidirectional Port A bit 5 digital input or open-drain output, hardware reset PRST#, or PWMG2 output; a 33 ohm series resistor is recommended for noise immunity in input mode.
9 PA3/TM2PWM/COM4/CIN1-/PG2PWM bidirectional Port A bit 3 digital I/O with optional pull-up, comparator minus input 1, Timer2 output, LCD COM4 (1/2 VDD) or PWMG2 output.
10 PA4/COM3/CIN+/CIN4-/PG1PWM bidirectional Port A bit 4 digital I/O with optional pull-up, LCD COM3 (1/2 VDD), comparator plus input or minus input 4, or PWMG1 output.
11 PA0/INT0/COM2/CO/PG0PWM bidirectional Port A bit 0 digital I/O with optional pull-up, external interrupt 0 (both edges), comparator output, PWMG0 output or LCD COM2 (1/2 VDD).
12 GND power_in Ground.
13 PB0/INT1/COM1 bidirectional Port B bit 0 digital I/O with optional pull-up, external interrupt 1 (both edges) or LCD COM1 (1/2 VDD).
14 PB1 bidirectional Port B bit 1 digital input or two-state output with optional pull-up; disable digital input via pbdier bit 1 when used as analog input.
15 PB2/TM2PWM/PG2PWM bidirectional Port B bit 2 digital I/O with optional pull-up, Timer2 output or PWMG2 output.
16 PB3/PG2PWM bidirectional Port B bit 3 digital I/O with optional pull-up or PWMG2 output.

Key specifications

Parameter Value
Manufacturer PADAUK Tech
Package SOP-16
Category Embedded Processors & Controllers
Pins 16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VDD Operating Voltage VDD 2 5.5 V Subject to LVR tolerance 16
Low Voltage Reset tolerance LVR% -5 5 % 16
System clock fSYS, IHRC/2 fSYS 0 8 MHz VDD ≧ 3.5V 16
System clock fSYS, IHRC/4 fSYS 0 4 MHz VDD ≧ 2.5V 16
System clock fSYS, IHRC/8 fSYS 0 2 MHz VDD ≧ 2.0V 16
System clock fSYS, ILRC fSYS 70 KHz VDD = 3V 16
Operating Current, IHRC/16 (1MIPS) IOP 0.3 mA fSYS=IHRC/16=1MIPS@3V 16
Operating Current, ILRC IOP 12 uA fSYS=ILRC=70KHz@3V 16
Operating Current, EOSC (reserved) IOP 10 uA fSYS=EOSC=32KHz@3V (reserved) 16
Power Down Current (stopsys) IPD 0.5 uA fSYS= 0Hz, VDD =3.3V 16
Power Save Current (stopexe, IHRC disabled) IPS 5 uA VDD =3.3V 16
Input low voltage for IO lines VIL 0 V 16
IO lines sink current (normal), PA0,PA3,PA4,PB2,PB5,PB6 IOL 10 mA VDD=3.3V, VOL=0.33V 16
IO lines sink current (normal), PA6,PA7,PB0,PB1,PB3,PB4,PB7 IOL 6 mA VDD=3.3V, VOL=0.33V 16
IO lines sink current (normal), PA5 IOL 5 mA VDD=3.3V, VOL=0.33V 16
IO lines sink current (low), PA5 IOL 5 mA VDD=3.3V, VOL=0.33V 16
IO lines sink current (low), others IOL 2 mA VDD=3.3V, VOL=0.33V 16
IO lines drive current (normal) IOH -5 mA VDD=3.3V, VOH=2.97V 16
IO lines drive current (low) IOH -1.6 mA 16
Input voltage VIN -0.3 V 16
Injected current on pin IINJ(PIN) 1 mA VDD +0.3≧VIN≧ -0.3 16
Pull-high Resistance RPH 200 KΩ VDD=3.3V 16
Frequency of IHRC after calibration (5V, 25°C) fIHRC 15.84 16 16.16 MHz VDD=5V, Ta=25°C 16
Frequency of IHRC after calibration (2.2V-5.5V, -20 to 70°C) fIHRC 15.2 16.8 MHz VDD =2.2V~5.5V, -20°C <Ta<70°C 16
Frequency of IHRC after calibration (2.0V-5.5V, -20 to 70°C) fIHRC 13.6 18.4 MHz VDD =2.0V~5.5V, -20°C <Ta<70°C 16
Interrupt pulse width tINT 30 ns VDD = 3.3V 16
RAM data retention voltage VDR 1.5 V In power-down mode 16
Watchdog timeout period, misc[1:0]=00 (default) tWDT 8192 TILRC misc[1:0]=00 (default) 17
Watchdog timeout period, misc[1:0]=01 tWDT 16384 TILRC misc[1:0]=01 17
Watchdog timeout period, misc[1:0]=10 tWDT 65536 TILRC misc[1:0]=10 17
Watchdog timeout period, misc[1:0]=11 tWDT 262144 TILRC misc[1:0]=11 17
System boot-up period, normal boot-up tSBP 47 ms @ VDD =5V 17
System boot-up period, fast boot-up tSBP 780 us 17
Wake-up time period, fast wake-up tWUP 45 TILRC Fast wake-up 17
Wake-up time period, normal wake-up tWUP 3000 TILRC Normal wake-up 17
External reset pulse width tRST 120 us 17
Comparator offset CPos -20 10 20 mV 17
Comparator input common mode CPcm 0 V 17
Comparator response time CPspt 100 500 ns Both rising and falling 17
Stable time to change comparator mode CPmc 2.5 7.5 us 17
Comparator current consumption CPcs 20 uA VDD = 3.3V 17
Supply Voltage 2 5.5 V Maximum Rating 5.5V 17
Input Voltage -0.3 V 17
Operating Temperature -20 70 °C 17
Storage Temperature -50 125 °C 17
Junction Temperature 150 °C 17

CAD (KiCad official)

  • Symbol: PFS154-S16
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: pfs154-s16-etched.step / pfs154-s16-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pfs154-s16.step / pfs154-s16.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: PADAUK Tech datasheet (85 pp, sha256 2a29a45406cd553d, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF