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Microchip Technology PIC18F56K42T-I/PT — Microcontrollers & Processors (MCU / MPU / DSP)

PIC18F56K42T-I/PT Microchip 8-bit MCU, 64 MHz, 64 KB Flash

MPNPIC18F56K42T-I/PT
Active

Microchip PIC® XLP™ 18K series, PIC18F56K42T-I/PT, 8-bit PIC MCU, 64MHz, 64KB Flash, 4K x 8 RAM, 1K x 8 EEPROM, 44 I/O, I²C/LINbus/SPI/UART, A/D 43x12b, D/A 1x5b, -40°C~85°C, 48-TQFP Exposed Pad.

$2.8300Ref. price · indicative, final on quote
Microchip Technology PIC18F56K42T-I/PT datasheet (PDF)
Packaging48-TQFP Exposed Pad
RoHSROHS3 Compliant
SeriesPIC® XLP™ 18K
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

PIC18F56K42T-I/PT specifications
ParameterValue
SeriesPIC® XLP™ 18K
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2.3V ~ 5.5V
Operating temperature-40°C~85°C(TA)
Speed64MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size4K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, LVD, POR, PWM, WDT
ConnectivityI²C, LINbus, SPI, UART/USART
Number of i (O)44
Core processorPIC
Case48-TQFP Exposed Pad
Data convertersA/D 43x12b; D/A 1x5b
Program memory size64KB (32K x 16)

Product details

It packs 44 I/O lines, a 43-channel 12-bit ADC, a single 5-bit DAC, and serial connectivity covering I²C, LINbus, SPI, and UART/USART.

Active lifecycle — no LTB surprise

48-TQFP Exposed Pad — rework and thermal reality

The package is a 48-TQFP with an exposed pad (7x7 mm body). The tape-and-reel option (Cut Tape also available) feeds pick-and-place without a feeder change.

Peripheral set — what the 44 I/O and ADC buy you

Forty-four I/O pins give you headroom for a parallel LCD data bus, a row of pushbuttons, and a handful of status LEDs while still leaving serial lines free. The 43-channel 12-bit ADC can sample a bank of analog sensors — thermistors, potentiometers, current-shunt amplifiers — without an external mux. The 1K x 8 EEPROM is handy for storing calibration constants or configuration bytes that survive a firmware update.

Frequently asked questions

What is the difference between PIC18F56K42 and PIC18F56K42T?

The 'T' suffix in PIC18F56K42T indicates tape-and-reel packaging (also available in cut tape), while the base PIC18F56K42 typically ships in trays or tubes. The silicon and firmware are identical — the difference is purely the shipping medium for automated assembly lines.

How much flash memory does PIC18F56K42T have?

That's enough for a moderate-sized application with a real-time OS, a USB stack, or a custom protocol handler.

What is the closest functional second-source to PIC18F56K42T-I/PT?

The PIC16LF1559-I/SS is a smaller 8-bit sibling with 32 MHz core, 17 I/O, and 10-bit ADC — not a direct pin-compatible swap, but a functional alternative for lower-pin-count, lower-speed designs. For a true 48-pin replacement, stick within the PIC18F56K42 family.