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Microchip Technology PIC18F27Q43-E/SP — Microcontrollers & Processors (MCU / MPU / DSP)

PIC18F27Q43-E/SP Microchip 8-bit MCU, 64 MHz, 128 KB Flash

MPNPIC18F27Q43-E/SP
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Microchip PIC® XLP™ 18F PIC18F27Q43-E/SP, 8-Bit MCU, 64MHz, 128KB Flash, 8K x 8 RAM, 1K x 8 EEPROM, 28-DIP Through Hole, -40°C to 125°C.

$2.9200Ref. price · indicative, final on quote
Microchip Technology PIC18F27Q43-E/SP datasheet (PDF)
Packaging28-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
SeriesPIC® XLP™ 18F, Functional Safety (FuSa)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

PIC18F27Q43-E/SP specifications
ParameterValue
SeriesPIC® XLP™ 18F, Functional Safety (FuSa)
MountingThrough Hole
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 5.5V
Operating temperature-40°C~125°C(TA)
Speed64MHz
PackageTube
RAM size8K 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)25
Core processorPIC
Case28-DIP (0.300\", 7.62mm)
Data convertersA/D 24x12b; D/A 1x8b
Program memory size128KB (128K x 8)

Product details

64 MHz 8-bit core with 128 KB program space — the BOM-fit tier

The Microchip PIC18F27Q43-E/SP is an 8-bit MCU from the PIC® XLP™ 18F series, qualified for Functional Safety (FuSa) applications. The 28-pin SPDIP through-hole package suits prototyping sockets, high-vibration harnessed assemblies, and rework-friendly layouts where a surface-mount part would complicate field service.

Extended temperature grade and analog peripheral count

Built-in peripherals include Brown-out Detect/Reset, Low-Voltage Detect, POR, PWM, and WDT — the usual watchdog and power-supervision blocks for unattended operation. Serial connectivity covers I²C, LINbus, SPI, and UART/USART, which covers the common sensor and actuator buses in automotive and industrial control. The 25 general-purpose I/O pins provide enough headroom for a keypad matrix, LED indicators, and a few discrete sensor inputs alongside the serial interfaces.

ROHS3 compliance is confirmed.

Frequently asked questions

What is the difference between PIC18F27Q43-E/SP and PIC18F27Q43-I/SP?

Both are otherwise the same silicon in the same 28-SPDIP package. The -E variant is the better choice for environments that exceed 85°C ambient.

Is PIC18F27Q43-E/SP obsolete or end-of-life?

It remains a current-production part suitable for new designs.