USB Microcontroller – PIC18F57K42

8 Analog Inputs • 21 Digital Inputs • 8 Digital Outputs • Optically Isolated USB

PIC18F57K42 Front View

Front View

PIC18F57K42 Top View

Top View

Specifications

Input Power	+5VDC, 18mA (no output loading)
Clock Source	Internal HFINTOSC or LFINTOSC
USB Communication	Optically isolated – Mini-B connector – 128,000 baud
Programming Header	5-pin, 0.1" spacing Pin 1 – MCLR/VPP Pin 2 – Vdd (+5VDC) Pin 3 – Vss (DC Com) Pin 4 – ICSPDAT Pin 5 – ICSPCLK
Factory Programming	Available with no factory programming, or preprogrammed as specified

Physical Dimensions

Overall Size	W 2.83" x L 5.4" x H 0.675" (W 72mm x L 137.4mm x H 17.145mm)
Mounting Hole Pattern	4 holes – 0.17" dia • 2.519" x 5.098"

PIC18F57K42 PCB Layout

PCB Layout – Topographical Footprint

I/O – Preprogrammed Configuration

Analog Inputs (8)	0 to 5VDC — RA0–RA7
Digital Inputs (21)	6 — RB0–RB5 4 — RC2–RC5 8 — RD0–RD7 3 — RE0–RE2
Digital Outputs (8)	7 — RF0–RF6 1 — RF7 (LED)

Serial Communication Commands

Read Analog – Single Channel	'$' (36d, 24h) + channel number
Read Analog – All Channels	'#' (35d, 23h)
Read Digital In – Single Channel	'!' (33d, 21h) + channel number
Read Digital In – All Channels	'@' (64d, 40h)
Write Digital Out – Single Channel	'?' (63d, 3Fh) + channel number '01' = ON • '00' = OFF