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PIC16LF18344-I

Public Made by Adom

by adom

Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), UQFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PIC16LF18344-I

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · UQFN-20-EP(4x4)

PIC16LF18344-I from Microchip Tech, in a UQFN-20-EP(4x4). 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 RA3/MCLR/VPP input Input-only port pin RA3 that doubles as Master Clear reset input with internal weak pull-up and as the high-voltage programming input VPP.
2 RC5 bidirectional General purpose I/O RC5 with ANC5 analog input, MDCIN2 and CCP1 default inputs, and interrupt-on-change.
3 RC4 bidirectional General purpose I/O RC4 with ANC4 analog input and interrupt-on-change.
4 RC3 bidirectional General purpose I/O RC3 with ANC3, C1IN3-/C2IN3- comparator inputs, MDMIN, CCP2 and CLCIN1 default inputs.
5 RC6 bidirectional General purpose I/O RC6 with ANC6 analog input and SS1 default slave-select input.
6 RC7 bidirectional General purpose I/O RC7 with ANC7 analog input and interrupt-on-change.
7 RB7 bidirectional General purpose I/O RB7 with ANB7 analog input and interrupt-on-change.
8 RB6 bidirectional General purpose I/O RB6 with ANB6 analog input, default SPI clock SCK1 and I2C clock SCL1 (I2C-level capable pin).
9 RB5 bidirectional General purpose I/O RB5 with ANB5 analog input, EUSART RX and CLCIN3 default inputs.
10 RB4 bidirectional General purpose I/O RB4 with ANB4 analog input, SPI data input SDI1, I2C data SDA1 and CLCIN2 default input.
11 RC2 bidirectional General purpose I/O RC2 with ANC2, C1IN2-/C2IN2- comparator inputs and MDCIN1 default input.
12 RC1 bidirectional General purpose I/O RC1 with ANC1 and C1IN1-/C2IN1- comparator negative inputs.
13 RC0 bidirectional General purpose I/O RC0 with ANC0 analog input and C2IN0+ comparator positive input.
14 RA2 bidirectional General purpose I/O RA2 with ANA2, VREF-, DAC1REF-, T0CKI, CCP3, CWG1IN/CWG2IN, CLCIN0 and INT default inputs.
15 RA1/ICSPCLK bidirectional General purpose I/O RA1 with ANA1, VREF+, C1IN0-/C2IN0-, DAC1REF+, and ICSP clock / in-circuit debug clock (ICSPCLK/ICDCLK).
16 RA0/ICSPDAT bidirectional General purpose I/O RA0 with ANA0, C1IN0+, DAC1OUT analog output, and ICSP data / in-circuit debug data (ICSPDAT/ICDDAT).
17 VSS power_in Ground reference.
18 VDD power_in Positive supply, 1.8V to 3.6V for PIC16LF18344; must be decoupled and never left floating.
19 RA5 bidirectional General purpose I/O RA5 with ANA5, T1CKI/T3CKI/T5CKI, secondary oscillator SOSCIN/SOSCI, external clock input CLKIN and crystal pin OSC1.
20 RA4 bidirectional General purpose I/O RA4 with ANA4, T1G/T3G/T5G, CCP4, SOSCO, FOSC/4 CLKOUT and crystal pin OSC2.
21 EP passive Exposed bottom pad; recommended to be connected to VSS but must not be the main VSS connection to the device.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package UQFN-20-EP(4x4)
Category Single Chip Microcomputer/Microcontroller
Pins 21

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Voltage on VDD pin VDD -0.3 4 V PIC16LF18324/18344, with respect to VSS 408
Voltage on MCLR pin -0.3 9 V with respect to VSS 408
Storage temperature -65 150 °C 408
Ambient temperature under bias -40 125 °C 408
Maximum current on VSS pin 250 mA -40°C ≤ TA ≤ +85°C 408
Maximum current on VSS pin 85 mA +85°C ≤ TA ≤ +125°C 408
Maximum current on VDD pin 250 mA -40°C ≤ TA ≤ +85°C 408
Maximum current on VDD pin 85 mA +85°C ≤ TA ≤ +125°C 408
Maximum current on any I/O pin 50 mA 408
Clamp current IK 20 mA VPIN < 0 or VPIN > VDD 408
Total power dissipation 800 mW 408
Operating supply voltage VDD 1.8 3.6 V FOSC ≤ 16 MHz 411
Operating supply voltage VDD 2.5 3.6 V FOSC > 16 MHz 411
Operating ambient temperature, industrial TA -40 85 °C Industrial Temperature 409
RAM data retention voltage VDR 1.5 V Device in Sleep mode 411
VDD rise rate for internal POR SVDD 0.05 V/ms BOR and LPBOR disabled 411
Supply current XT = 4 MHz IDDXT4 309 400 uA XT = 4 MHz, 3.0V 413
Supply current HFINTOSC = 16 MHz IDDHFO16 1.2 1.6 mA HFINTOSC = 16 MHz, 3.0V 413
Supply current HFINTOSC = 32 MHz IDDHFOPLL 2.3 3.1 mA HFINTOSC = 32 MHz, 3.0V 413
Supply current HS+PLL = 32 MHz IDDHSPLL32 2.2 2.9 mA HS+PLL = 32 MHz, 3.0V 413
Supply current IDLE mode IDDIDLE 774 1100 uA IDLE Mode, HFINTOSC = 16 MHz, 3.0V 413
Power-down current base, max at 85°C IPD 0.03 2 A 3.0V, VREGPM = 1, max at +85°C 414
Power-down current base, max at 125°C IPD 0.03 5.2 A 3.0V, VREGPM = 1, max at +125°C 414
Power-down current WDT, max at 85°C IPD_WDT 0.4 2.9 A 3.0V, max at +85°C 414
Power-down current SOSC, max at 85°C IPD_SOSC 1.3 2.8 A 3.0V, max at +85°C 414
Power-down current FVR, max at 85°C IPD_FVR 45 74 A 3.0V, max at +85°C 414
Power-down current BOR, max at 85°C IPD_BOR 10.6 16 A 3.0V, max at +85°C 414
Power-down current LPBOR, max at 85°C IPD_LPBOR 0.3 2.5 A 3.0V, max at +85°C 414
Power-down current comparator, max at 85°C IPD_CMP 30 45 A 3.0V, max at +85°C 414
Input low voltage, TTL buffer VIL 0.8 V 4.5V ≤ VDD ≤ 5.5V 415
Input low voltage, SMBus levels VIL 0.8 V 2.7V ≤ VDD ≤ 5.5V 415
Input high voltage, TTL buffer VIH 2 V 4.5V ≤ VDD ≤ 5.5V 415
Input high voltage, SMBus levels VIH 2.1 V 2.7V ≤ VDD ≤ 5.5V 415
Input leakage current I/O ports IIL -125 125 nA VSS ≤ VPIN ≤ VDD, Pin at high-impedance, 85°C 415
Input leakage current MCLR IIL -200 200 nA VSS ≤ VPIN ≤ VDD, Pin at high-impedance, 85°C 415
Weak pull-up current IPUR 25 120 200 uA VDD = 3.0V, VPIN = VSS 415
Output low voltage VOL 0.6 V IOL = 10.0 mA, VDD = 3.0V 415
I/O pin capacitance CIO 5 50 pF All I/O pins 415
Thermal resistance junction to ambient θJA 43 °C/W 20-pin UQFN 4x4mm package 417
Thermal resistance junction to case θJC 5.3 °C/W 20-pin UQFN 4x4mm package 417
Maximum junction temperature TJMAX 150 °C 417
Power dissipation PD 0.8 W PD = PINTERNAL + PI/O 417
Voltage on MCLR/VPP to enter programming mode VIHH 7.9 9 V Note 2 416
Watchdog Timer time-out period TWDT 10 16 27 ms 16 ms Nominal Reset Time 424
Power-up Timer period TPWRT 40 65 140 ms 424
Brown-out Reset voltage VBOR 2.55 2.7 2.85 V BORV = 0 424
Brown-out Reset voltage VBOR 1.8 1.9 2.1 V BORV = 1 (PIC16LF18324/18344) 424
Brown-out Reset hysteresis VBORHYS 0 25 75 mV 424
Low-Power Brown-out Reset voltage VLPBOR 1.8 2.1 2.5 V PIC16LF18324/18344 424
ADC integral error EIL -1 1 LSb ADCREF+ = 3.0V, ADCREF- = 0V 425
ADC offset error EOFF -2 2 LSb ADCREF+ = 3.0V, ADCREF- = 0V 425
ADC gain error EGN -2 2 LSb ADCREF+ = 3.0V, ADCREF- = 0V 425
Comparator input offset voltage VIOFF -50 50 mV VICM = VDD/2 428
Comparator hysteresis CHYST 15 25 35 mV 428
FVR 1x gain (1.024V nominal) VFVR1 -4 4 % VDD ≥ 2.5V, -40°C to 85°C 428
FVR 2x gain (2.048V nominal) VFVR2 -4 4 % VDD ≥ 2.5V, -40°C to 85°C 428

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 276

CAD (KiCad official)

  • Symbol: PIC16LF18344-I
  • Footprint: Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm
  • 3D model: UQFN-20-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: pic16lf18344-i-etched.step / pic16lf18344-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pic16lf18344-i.step / pic16lf18344-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (489 pp, sha256 ef07a4c4e86158f1, retrieved 2026-10-23, tier: manufacturer)
  • 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