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PIC18F46K20-I

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Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PIC18F46K20-I

Microchip Tech · Microcontrollers (MCU/MPU/SOC) · TQFP-44(10x10)

PIC18F46K20-I from Microchip Tech, in a TQFP-44(10x10). 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 RC7/RX/DT bidirectional Digital I/O with Schmitt Trigger input; EUSART asynchronous receive input (RX) or synchronous data I/O (DT).
2 RD4/PSP4 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 4 (PSP4).
3 RD5/PSP5/P1B bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 5 or ECCP1 Enhanced PWM output channel B (P1B).
4 RD6/PSP6/P1C bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 6 or ECCP1 Enhanced PWM output channel C (P1C).
5 RD7/PSP7/P1D bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 7 or ECCP1 Enhanced PWM output channel D (P1D).
6 VSS power_in Ground reference for logic and I/O pins.
7 VDD power_in Positive supply for logic and I/O pins.
8 RB0/INT0/FLT0/AN12 bidirectional Digital I/O with programmable weak pull-up; external interrupt 0 (INT0), ECCP1 PWM Fault input (FLT0), or ADC analog input channel 12.
9 RB1/INT1/AN10/C12IN3- bidirectional Digital I/O with programmable weak pull-up; external interrupt 1 (INT1), ADC analog input channel 10, or comparator C1/C2 inverting input channel 3.
10 RB2/INT2/AN8 bidirectional Digital I/O with programmable weak pull-up; external interrupt 2 (INT2) or ADC analog input channel 8.
11 RB3/AN9/C12IN2-/CCP2 bidirectional Digital I/O with programmable weak pull-up; ADC analog input channel 9, comparator C1/C2 inverting input channel 2, or CCP2 capture/compare/PWM (alternate pin when CCP2MX is cleared).
12 NC unconnected No connect.
13 NC unconnected No connect.
14 RB4/KBI0/AN11 bidirectional Digital I/O with programmable weak pull-up; interrupt-on-pin-change KBI0 or ADC analog input channel 11.
15 RB5/KBI1/PGM bidirectional Digital I/O with programmable weak pull-up; interrupt-on-pin-change KBI1 or low-voltage ICSP programming enable (PGM).
16 RB6/KBI2/PGC bidirectional Digital I/O with programmable weak pull-up; interrupt-on-pin-change KBI2 or in-circuit debugger and ICSP programming clock (PGC).
17 RB7/KBI3/PGD bidirectional Digital I/O with programmable weak pull-up; interrupt-on-pin-change KBI3 or in-circuit debugger and ICSP programming data (PGD).
18 MCLR/VPP/RE3 input Active-low Master Clear (device Reset) input when MCLRE is enabled, programming voltage input (VPP), or digital input RE3 when MCLR is disabled.
19 RA0/AN0/C12IN0- bidirectional Digital I/O (TTL input); ADC analog input channel 0 or comparator C1/C2 inverting input channel 0.
20 RA1/AN1/C12IN0- bidirectional Digital I/O (TTL input); ADC analog input channel 1 or comparator C1/C2 inverting input (printed as C12IN0- in the 40/44-pin table).
21 RA2/AN2/VREF-/CVREF/C2IN+ bidirectional Digital I/O (TTL input); ADC analog input channel 2, A/D reference voltage (low) input VREF-, comparator reference voltage output CVREF, or comparator C2 non-inverting input.
22 RA3/AN3/VREF+/C1IN+ bidirectional Digital I/O (TTL input); ADC analog input channel 3, A/D reference voltage (high) input VREF+, or comparator C1 non-inverting input.
23 RA4/T0CKI/C1OUT bidirectional Digital I/O with Schmitt Trigger input; Timer0 external clock input (T0CKI) or comparator C1 output.
24 RA5/AN4/SS/HLVDIN/C2OUT bidirectional Digital I/O (TTL input); ADC analog input channel 4, SPI slave select input (SS), high/low-voltage detect input (HLVDIN), or comparator C2 output.
25 RE0/RD/AN5 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port read control (RD) or ADC analog input channel 5.
26 RE1/WR/AN6 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port write control (WR) or ADC analog input channel 6.
27 RE2/CS/AN7 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port chip select (CS) or ADC analog input channel 7.
28 VDD power_in Positive supply for logic and I/O pins.
29 VSS power_in Ground reference for logic and I/O pins.
30 OSC1/CLKIN/RA7 bidirectional Oscillator crystal or external clock input (OSC1/CLKIN) in oscillator modes; otherwise general purpose I/O RA7.
31 OSC2/CLKOUT/RA6 bidirectional Oscillator crystal output (OSC2) or CLKOUT at FOSC/4 in RC mode; otherwise general purpose I/O RA6.
32 RC0/T1OSO/T13CKI bidirectional Digital I/O with Schmitt Trigger input; Timer1 oscillator output (T1OSO) or Timer1/Timer3 external clock input (T13CKI).
33 NC unconnected No connect.
34 NC unconnected No connect.
35 RC1/T1OSI/CCP2 bidirectional Digital I/O with Schmitt Trigger input; Timer1 oscillator input (T1OSI) or CCP2 capture/compare/PWM (default CCP2 pin when CCP2MX is set).
36 RC2/CCP1/P1A bidirectional Digital I/O with Schmitt Trigger input; ECCP1 capture/compare input/output or Enhanced PWM output channel A (P1A).
37 RC3/SCK/SCL bidirectional Digital I/O with Schmitt Trigger input; MSSP synchronous serial clock input/output for SPI (SCK) or I2C (SCL) mode.
38 RD0/PSP0 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 0 (TTL input when PSP is enabled).
39 RD1/PSP1 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 1 (TTL input when PSP is enabled).
40 RD2/PSP2 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 2 (TTL input when PSP is enabled).
41 RD3/PSP3 bidirectional Digital I/O with Schmitt Trigger input; Parallel Slave Port data bit 3 (TTL input when PSP is enabled).
42 RC4/SDI/SDA bidirectional Digital I/O with Schmitt Trigger input; MSSP SPI data input (SDI) or I2C data I/O (SDA).
43 RC5/SDO bidirectional Digital I/O with Schmitt Trigger input; MSSP SPI data output (SDO).
44 RC6/TX/CK bidirectional Digital I/O with Schmitt Trigger input; EUSART asynchronous transmit output (TX) or synchronous clock I/O (CK).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-44(10x10)
Category Embedded Processors & Controllers
Pins 44

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 -40 125 °C Under bias 350
Storage temperature -65 150 °C 350
Voltage on pins with respect to VSS (except VDD and MCLR) -0.3 V Except VDD and MCLR; upper limit printed as (VDD + 0.3V) 350
Voltage on VDD pin with respect to VSS VDD -0.3 4.5 V 350
Voltage on MCLR with respect to VSS MCLR 0 11 V 350
Total power dissipation 1 W 350
Maximum current out of VSS pin 350 mA -40°C to +85°C for industrial 350
Maximum current into VDD pin (PIC18F4XK20) 350 mA -40°C to +85°C for industrial 350
Input clamp current IIK 20 mA VI < 0 or VI > VDD 350
Maximum output current sunk by any I/O pin 50 mA 350
Maximum output current sourced by any I/O pin 50 mA 350
VDDMIN (Fosc <= 16 MHz) VDDMIN 1.8 V Fosc <= 16 MHz 351
VDDMIN (Fosc <= 20 MHz) VDDMIN 2 V Fosc <= 20 MHz 351
VDDMIN (Fosc <= 64 MHz, Industrial Temperature) VDDMIN 3 V Fosc <= 64 MHz, industrial temperature 351
VDDMAX VDDMAX 3.6 V 351
TA_MIN operating ambient temperature (industrial) TA_MIN -40 °C Industrial temperature 351
TA_MAX operating ambient temperature (industrial) TA_MAX 85 °C Industrial temperature 351
Supply Voltage (D001) VDD 1.8 3.6 V 353
RAM Data Retention Voltage (D002) VDR 1.5 V 353
VDD Start Voltage to ensure internal Power-on Reset signal (D003) VPOR 0.7 V See section on Power-on Reset for details 353
VDD Rise Rate to ensure internal Power-on Reset signal (D004) SVDD 0.05 V/ms See section on Power-on Reset for details 353
Brown-out Reset Voltage (D005) VBOR 1.72 1.82 1.95 V BORV<1:0> = 11 353
Brown-out Reset Voltage (D005) VBOR 2.15 2.27 2.4 V BORV<1:0> = 10 353
Brown-out Reset Voltage (D005) VBOR 2.65 2.75 2.9 V BORV<1:0> = 01 353
Brown-out Reset Voltage (D005) VBOR 2.98 3.08 3.25 V BORV<1:0> = 00 353
Power-down Current (IPD) D006 IPD 0.05 1 µA -40°C; VDD = 1.8V, Sleep mode 353
Power-down Current (IPD) D006 IPD 0.6 3 µA +85°C; VDD = 1.8V, Sleep mode 353
Power-down Current (IPD) D007 IPD 0.1 1 µA -40°C; VDD = 3.0V, Sleep mode 353
Power-down Current (IPD) D007 IPD 0.7 3 µA +85°C; VDD = 3.0V, Sleep mode 353
Supply Current (IDD) RC_IDLE, LFINTOSC 31 kHz (D011A) IDD 3.5 8 µA -40°C; VDD = 3.0V, FOSC = 31 kHz (RC_IDLE, LFINTOSC) 355
Supply Current (IDD) RC_IDLE, LFINTOSC 31 kHz (D011A) IDD 4 12 µA +85°C; VDD = 3.0V, FOSC = 31 kHz (RC_IDLE, LFINTOSC) 355
Supply Current (IDD) RC_IDLE, HF-INTOSC 1 MHz (D012) IDD 0.3 0.4 mA -40°C to +125°C; VDD = 1.8V, FOSC = 1 MHz (RC_IDLE, HF-INTOSC) 355
Supply Current (IDD) RC_IDLE, HF-INTOSC 1 MHz (D012A) IDD 0.4 0.6 mA -40°C to +125°C; VDD = 3.0V (RC_IDLE, HF-INTOSC) 355
Supply Current (IDD) RC_IDLE, HF-INTOSC 16 MHz (D013) IDD 1 1.2 mA -40°C to +125°C; VDD = 1.8V, FOSC = 16 MHz (RC_IDLE, HF-INTOSC) 355
Supply Current (IDD) RC_IDLE, HF-INTOSC 16 MHz (D013A) IDD 1.6 2 mA -40°C to +125°C; VDD = 3.0V (RC_IDLE, HF-INTOSC) 355
Supply Current (IDD) PRI_RUN 1 MHz EC (D014A) IDD 0.5 0.75 mA -40°C to +125°C; VDD = 3.0V (PRI_RUN, EC oscillator) 356
Supply Current (IDD) PRI_RUN 20 MHz EC (D015A) IDD 4.3 5 mA -40°C to +125°C; VDD = 3.0V (PRI_RUN, EC oscillator) 356
Supply Current (IDD) PRI_RUN 64 MHz EC (D016) IDD 12.2 14 mA -40°C to +85°C; VDD = 3.0V, FOSC = 64 MHz (PRI_RUN, EC oscillator) 356
Supply Current (IDD) PRI_RUN 16 MHz internal HS+PLL (D017A) IDD 4.2 5 mA -40°C to +125°C; VDD = 3.0V (PRI_RUN, HS+PLL, 16 MHz internal) 356
Supply Current (IDD) PRI_RUN 64 MHz internal HS+PLL (D018) IDD 12.2 15 mA -40°C to +85°C; VDD = 3.0V, FOSC = 16 MHz, 64 MHz internal (PRI_RUN, HS+PLL) 356
Supply Current (IDD) PRI_IDLE 1 MHz EC (D019A) IDD 0.09 0.15 mA -40°C to +125°C; VDD = 3.0V (PRI_IDLE, EC oscillator) 356
Supply Current (IDD) PRI_IDLE 20 MHz EC (D020A) IDD 1.8 2.5 mA -40°C to +125°C; VDD = 3.0V (PRI_IDLE, EC oscillator) 356
Supply Current (IDD) PRI_IDLE 64 MHz EC (D021) IDD 5.6 7 mA -40°C to +85°C; VDD = 3.0V, FOSC = 64 MHz (PRI_IDLE, EC oscillator) 356
Secondary oscillator supply current SEC_RUN (D022A) IDD 10 15 µA -40°C; VDD = 3.0V (SEC_RUN, Timer1 as clock) 357
Secondary oscillator supply current SEC_RUN (D022A) IDD 10 16 µA +25°C; VDD = 3.0V (SEC_RUN, Timer1 as clock) 357
Secondary oscillator supply current SEC_RUN (D022A) IDD 11 20 µA +85°C; VDD = 3.0V (SEC_RUN, Timer1 as clock) 357
RC_RUN supply current HF-INTOSC 31 kHz LFINTOSC (D008A) IDD 10 15 µA -40°C; VDD = 3.0V (RC_RUN, LFINTOSC) 354
RC_RUN supply current HF-INTOSC 31 kHz LFINTOSC (D008A) IDD 10.5 16 µA +25°C; VDD = 3.0V (RC_RUN, LFINTOSC) 354
RC_RUN supply current HF-INTOSC 31 kHz LFINTOSC (D008A) IDD 11 20 µA +85°C; VDD = 3.0V (RC_RUN, LFINTOSC) 354
Supply Current (IDD) RC_RUN HF-INTOSC 1 MHz (D009A) IDD 0.6 0.8 mA -40°C to +125°C; VDD = 3.0V (RC_RUN, HF-INTOSC) 354
Supply Current (IDD) RC_RUN HF-INTOSC 16 MHz (D010A) IDD 3.8 4.4 mA -40°C to +125°C; VDD = 3.0V (RC_RUN, HF-INTOSC) 354
Supply Current (IDD) RC_RUN HF-INTOSC 1 MHz (D009) IDD 0.4 0.5 mA -40°C to +125°C; VDD = 1.8V, FOSC = 1 MHz (RC_RUN, HF-INTOSC) 354
Supply Current (IDD) RC_RUN HF-INTOSC 16 MHz (D010) IDD 2.2 3 mA -40°C to +125°C; VDD = 1.8V, FOSC = 16 MHz (RC_RUN, HF-INTOSC) 354
Output Low Voltage I/O ports (D080) VOL 0.6 V IOL = 8.5 mA, VDD = 3.0V, -40°C to +85°C 361
Capacitive loading OSC2 pin (D100) COSC2 15 pF In XT, HS and LP modes when external clock is used to drive OSC1 361
Capacitive loading all I/O pins and OSC2 in RC mode (D101) CIO 50 pF To meet the AC Timing Specifications 361
Capacitive loading SCL, SDA (D102) CB 400 pF I2C Specification 361

CAD (KiCad official)

  • Symbol: PIC18F46K20-I
  • Footprint: Package_QFP:TQFP-44_10x10mm_P0.8mm
  • 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
  • 3D model files: pic18f46k20-i-etched.step / pic18f46k20-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pic18f46k20-i.step / pic18f46k20-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (440 pp, sha256 4e7e234c713a2325, retrieved 2026-10-19, tier: lcsc)
  • 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