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PMC251-S14

Public Made by Adom

by adom

PADAUK Tech Microcontroller Units (MCUs/MPUs/SOCs), SOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PMC251-S14

PADAUK Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SOP-14

PMC251-S14 from PADAUK Tech, in a SOP-14. 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 PB5 bidirectional Port B bit 5, programmable as input or output with weak pull-up; wake-up from sleep is disabled when pbdier bit 5 is 0.
2 PB6 bidirectional Port B bit 6, programmable as input or output with weak pull-up; wake-up from sleep is disabled when pbdier bit 6 is 0.
3 PB7 bidirectional Port B bit 7, programmable as input or output with weak pull-up; wake-up from sleep is disabled when pbdier bit 7 is 0.
4 VDD power_in Positive power supply, operating range 2.2V to 5.5V.
5 PA7/X1 bidirectional Port A bit 7 (input/output with weak pull-up) or crystal oscillator X1 input; padier bit 7 must be 0 when used for crystal to avoid leakage current, which also disables wake-up.
6 PA6/X2 bidirectional Port A bit 6 (input/output with weak pull-up) or crystal oscillator X2 output; padier bit 6 must be 0 when used for crystal to avoid leakage current, which also disables wake-up.
7 PA5/PRST# bidirectional External reset input (PRST#) or Port A bit 5 as input or open-drain output with no pull-up or pull-down resistor; a 33 ohm series resistor is advised for high noise immunity when used as input.
8 PA3 bidirectional Port A bit 3, programmable as input or output with weak pull-up; wake-up from sleep is disabled when padier bit 3 is 0.
9 PA4 bidirectional Port A bit 4, programmable as input or output with weak pull-up; wake-up from sleep is disabled when padier bit 4 is 0.
10 PA0/INT0 bidirectional Port A bit 0 (input/output with weak pull-up) or external interrupt 0 on rising or falling edge; wake-up is disabled when padier bit 0 is 0.
11 GND power_in Ground.
12 PB0/INT1 bidirectional Port B bit 0 (input/output with weak pull-up) or external interrupt 1 on rising or falling edge; wake-up is disabled when pbdier bit 0 is 0.
13 PB1 bidirectional Port B bit 1, programmable as input or output with weak pull-up; wake-up from sleep is disabled when pbdier bit 1 is 0.
14 PB2 bidirectional Port B bit 2, programmable as input or output with weak pull-up; wake-up from sleep is disabled when pbdier bit 2 is 0.

Key specifications

Parameter Value
Manufacturer PADAUK Tech
Package SOP-14
Category Single Chip Microcomputer/Microcontroller
Pins 14

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 VDD 2.2 5 5.5 V Ta = -40°C ~ 85°C 11
Input low voltage VIL 0 0.3 V max is 0.3VDD 11
Input high voltage VIH 0.7 V min is 0.7VDD; max VDD 11
IO pin sink current IOL 7 10 13 mA VDD=5.0V, VOL=0.5V 11
IO pin drive current IOH -5 -7 -9 mA VDD=5.0V, VOH=4.5V 11
Input voltage VIN -0.3 V max is VDD+0.3 11
Injected current on pin IINJ(PIN) 1 mA VDD+0.3≧VIN≧-0.3 11
Pull-up resistance RPH 62 KΩ VDD=5.0V (values 62/100/210 for VDD=5.0/3.3/2.2V) 11
Low voltage detect, lowest setting VLVD 1.67 1.8 1.93 V 11
Low voltage detect, highest setting VLVD 3.86 4.15 4.44 V 11
IHRC output frequency after calibration fIHRC 15.68 16 16.32 MHz @25°C 11
IHRC output frequency after calibration fIHRC 14.72 16 17.28 MHz VDD=2.2V~5.5V, -40°C<Ta<85°C 11
ILRC output frequency fILRC 20.4 24 27.6 KHz VDD=5.0V, Ta=25°C 12
ILRC output frequency fILRC 15.6 24 32.4 KHz VDD=5.0V, -40°C<Ta<85°C 12
ILRC output frequency fILRC 10.2 12 13.8 KHz VDD=3.3V, Ta=25°C 12
ILRC output frequency fILRC 7.8 12 16.2 KHz VDD=3.3V, -40°C<Ta<85°C 12
Interrupt pulse width tINT 30 ns VDD=5V 12
Data memory retention voltage VDR 1.5 V Power-down mode 12
External reset pulse width tRST 120 us @VDD=5V 12
Operating current IOP 1.7 mA fSYS=[email protected] 11
Operating current IOP 8 uA fSYS=ILRC~[email protected] 11
Power-down current IPD 0.7 uA fSYS=0Hz, VDD=5.0V (stopsys) 11
Power-down current IPD 0.4 uA fSYS=0Hz, VDD=3.3V (stopsys) 11
Power-save current IPS 0.4 mA VDD=5.0V; Band-gap, LVD, IHRC, ILRC, Timer16 enabled (stopexe) 11
Supply voltage 2.2 5.5 V 12
Input voltage -0.3 V max is VDD + 0.3V 12
Operating temperature -40 85 °C 12
Storage temperature -50 125 °C 12

CAD (KiCad official)

  • Symbol: PMC251-S14
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOP-14 (KiCad packages3D, STEP)
  • 3D model files: pmc251-s14-etched.step / pmc251-s14-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pmc251-s14.step / pmc251-s14.glb are the bare package body.

Provenance

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

  • Datasheet: PADAUK Tech datasheet (69 pp, sha256 3e75ba85c10b6e84, 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, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF