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PIC16LF18444-I

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PIC16LF18444-I

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SSOP-20-208mil

PIC16LF18444-I from Microchip Tech, in a SSOP-20-208mil. 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 power_in Positive supply pin; all VDD and VSS pins must always be connected and each pair needs decoupling capacitors.
2 RA5 bidirectional General-purpose I/O on PORTA with alternate functions CLKIN/SOSCI/OSC1, T1CKI, T2IN and SMT1SIG, with interrupt-on-change and selectable pull-up.
3 RA4 bidirectional General-purpose I/O on PORTA with alternate functions CLKOUT/SOSCO/OSC2, T1G and SMT1WIN, with interrupt-on-change and selectable pull-up.
4 RA3 input Input-only pin shared as MCLR/VPP; when MCLRE is enabled it acts as the device Master Clear input.
5 RC5 bidirectional General-purpose I/O on PORTC with alternate functions T4IN, CCP1IN, MDCARH and EUSART/MSSP peripheral inputs, with interrupt-on-change.
6 RC4 bidirectional General-purpose I/O on PORTC with alternate functions T3CKI, T3G and MSSP peripheral signals, with interrupt-on-change.
7 RC3 bidirectional General-purpose I/O on PORTC with alternate functions CCP2IN, comparator C1IN3- and C2IN3- inputs, and ADC channel ANC3.
8 RC6 bidirectional General-purpose I/O on PORTC with alternate function SS1 and ADC channel ANC6, with interrupt-on-change.
9 RC7 bidirectional General-purpose I/O on PORTC with ADC channel ANC7 and interrupt-on-change.
10 RB7 bidirectional General-purpose I/O on PORTB with alternate functions T6IN, SCK2/SCL2 and CK1/TX1, with interrupt-on-change.
11 RB6 bidirectional General-purpose I/O on PORTB with alternate functions SCK1/SCL1 and ADC channel ANB6, with interrupt-on-change.
12 RB5 bidirectional General-purpose I/O on PORTB with alternate functions CCP3IN, SDI2/SDA2, RX1/DT1 and CLCIN3, with interrupt-on-change.
13 RB4 bidirectional General-purpose I/O on PORTB with alternate functions T5G, SDI1/SDA1 and CLCIN2, with interrupt-on-change.
14 RC2 bidirectional General-purpose I/O on PORTC with alternate functions ADACT, MDCARL, T5CKI and comparator inputs C1IN2- and C2IN2-.
15 RC1 bidirectional General-purpose I/O on PORTC with alternate functions comparator inputs C1IN1- and C2IN1-, ADC channel ANC1 and interrupt-on-change.
16 RC0 bidirectional General-purpose I/O on PORTC with alternate functions C2IN0+, T3CKI and T3G, with interrupt-on-change.
17 RA2 bidirectional General-purpose I/O on PORTA with alternate functions ADCVREF-, DAC1VREF-, T0CKI, CWG1IN/CWG2IN and INT, with interrupt-on-change.
18 RA1 bidirectional General-purpose I/O on PORTA with alternate functions ADCVREF+, C1IN0-, C2IN0-, DAC1VREF+ and ICSPCLK/ICDCLK, with interrupt-on-change.
19 RA0 bidirectional General-purpose I/O on PORTA with alternate functions ANA0, C1IN0+, DAC1OUT1 and ICSPDAT/ICDDAT, with interrupt-on-change.
20 VSS power_in Ground reference pin; all VDD and VSS pins must always be connected.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SSOP-20-208mil
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
Ambient temperature under bias TA -40 125 °C 628
Storage temperature TSTG -65 150 °C 628
Voltage on VDD pin with respect to VSS (PIC16LF18424/44) VDD -0.3 4 V PIC16LF18424/44 628
Voltage on MCLR pin with respect to VSS VMCLR -0.3 9 V 628
Maximum current on any standard I/O pin IIO -50 50 mA 628
Clamp current, IK (VPIN < 0 or VPIN > VDD) IK -20 20 mA VPIN < 0 or VPIN > VDD 628
Total power dissipation PD 800 mW 628
Maximum current on VSS pin IVSS 250 mA -40°C ≤ TA ≤ +85°C 628
Maximum current on VSS pin IVSS 120 mA 85°C < TA ≤ +125°C 628
Maximum current on VDD pin IVDD 250 mA -40°C ≤ TA ≤ +85°C 628
Maximum current on VDD pin IVDD 85 mA 85°C < TA ≤ +125°C 628
Operating Supply Voltage VDD (FOSC ≤ 16 MHz) D002 VDD 1.8 3.6 V FOSC ≤ 16 MHz 630
Operating Supply Voltage VDD (FOSC > 16 MHz) D002 VDD 2.5 3.6 V FOSC > 16 MHz 630
RAM Data Retention Voltage VDR 1.5 V Device in Sleep mode 630
Power-on Reset Release Voltage VPOR 1.6 V BOR or LPBOR disabled 630
Power-on Reset Rearm Voltage VPORR 0.8 V BOR or LPBOR disabled 630
VDD Rise Rate to ensure internal Power-on Reset signal SVDD 0.05 V/ms BOR or LPBOR disabled 631
Operating Ambient Temperature Range (Industrial) TA -40 85 °C Industrial Temperature 629
Operating Ambient Temperature Range (Extended) TA -40 125 °C Extended Temperature 629
Supply Current, XT = 4 MHz IDDXT4 465 670 μA 3.0V 632
Supply Current, HFINTOSC = 16 MHz IDDHFO16 2.1 2.6 mA 3.0V 632
Supply Current, HFINTOSC = 32 MHz IDDHFOPLL 3.9 4.8 mA 3.0V 633
Supply Current, HS+PLL = 32 MHz IDDHSPLL32 3.6 4.4 mA 3.0V 633
Supply Current, IDLE mode, HFINTOSC = 16 MHz IDDIDLE 1.5 1.9 mA 3.0V 633
Supply Current, DOZE mode, HFINTOSC = 16 MHz, Doze Ratio = 16 IDDDOZE 1.5 mA 3.0V 633
Power-Down Current IPD Base, max +85°C IPD 0.08 2 μA 3.0V 634
Power-Down Current IPD Base, max +125°C IPD 0.08 7 μA 3.0V 634
Power-Down Current FVR, max +85°C IPD_FVR 46 76 μA 3.0V 634
Power-Down Current FVR, max +125°C IPD_FVR 46 77 μA 3.0V 634
Power-Down Current Comparator, max +85°C IPD_CMP 30 57 μA 3.0V 634
Power-Down Current Comparator, max +125°C IPD_CMP 30 58 μA 3.0V 634
Input Leakage Current I/O ports, 85°C IIL -125 5 125 nA VSS≤VPIN≤VDD, Pin at high-impedance, 85°C 636
Weak Pull-up Current IPUR 25 120 200 μA VDD=3.0V, VPIN=VSS 636
Output Low Voltage, Standard I/O VOL 0.6 V IOL = 10 mA, VDD = 3.0V 636
Pin capacitance, All I/O Pins CIO 5 50 pF 636
Voltage on MCLR/VPP pin to enter programming mode VIHH 8 9 V Note 2, Note 3 637
Current on MCLR/VPP pin during programming mode IPPGM 1 mA Note 2 637
Supply Current during programming operation IDDPGM 10 mA 637
Thermal Resistance Junction to Ambient, 20-pin SSOP θJA 87.3 °C/W 20-pin SSOP package 638
Thermal Resistance Junction to Case, 20-pin SSOP θJC 31.1 °C/W 20-pin SSOP package 639
Maximum Junction Temperature TJMAX 150 °C 639
System Clock Frequency FOSC FOSC 32 MHz Note 2, Note 3 640
PLL Input Frequency Range FPLLIN 4 16 MHz 642
PLL Output Frequency Range FPLLOUT 16 32 MHz Note 1 642

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing PPS body RxyPPS 267

CAD (KiCad official)

  • Symbol: PIC16LF18444-I
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: pic16lf18444-i-etched.step / pic16lf18444-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pic16lf18444-i.step / pic16lf18444-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (707 pp, sha256 bdf26783d2114dfd, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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