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Microchip Technology PIC18F04Q40-E/SL — Microcontrollers & Processors (MCU / MPU / DSP)

PIC18F04Q40-E/SL 8-Bit MCU, 64MHz, 16KB Flash, 14-SOIC

MPNPIC18F04Q40-E/SL
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Microchip PIC® 18F series PIC18F04Q40-E/SL, 8-bit PIC MCU, 64MHz, 16KB Flash, 1K x 8 RAM, 512 x 8 EEPROM, 1.8V-5.5V, -40°C to 125°C, 14-SOIC.

$1.2200Ref. price · indicative, final on quote
Microchip Technology PIC18F04Q40-E/SL datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesPIC® 18F
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

PIC18F04Q40-E/SL specifications
ParameterValue
SeriesPIC® 18F
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 5.5V
Operating temperature-40°C ~ 125°C (TA)
Speed64MHz
PackageTube
RAM size1K x 8
Core size8-Bit
EEPROM size512 x 8
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI2C, LINbus, SPI, UART/USART
Number of i (O)12
Core processorPIC
Case14-SOIC (0.154\", 3.90mm Width)
Data convertersA/D 1x12b; D/A 2x8b
Program memory size16KB (16K x 8)

Product details

64 MHz in an 8-bit core — where the speed matters

The Microchip PIC18F04Q40-E/SL is an 8-bit PIC MCU clocked at 64 MHz, with 16 KB Flash program memory, 1K x 8 RAM, and 512 x 8 EEPROM. It integrates a 12-bit ADC and two 8-bit DACs, plus serial interfaces covering I2C, SPI, UART/USART, and LINbus.

What the 125°C rating buys you

The 125°C rating covers engine-bay sensor nodes and outdoor telecom gear.

Supply voltage flexibility and BOM simplification

The 14-SOIC package fits a standard SOIC-14 land pattern — no fine-pitch reflow needed.

Lifecycle status — current production, no LTB risk

ROHS3 compliant.

Frequently asked questions

Can PIC18F04Q40-E/SL run from a 3.3V supply?

The internal oscillator and all peripherals operate at that voltage without external regulation.

What are the alternatives to PIC18F04Q40-E/SL?

Microchip offers the PIC16LF1559-I/SS as a lower--bit alternative with 32 MHz max speed and 17 I/O, but it lacks the 125°C rating (only 85°C) and the DACs. For a 16-bit step up, the PIC24FJ256GA106-I/MR provides 256 KB Flash and 53 I/O at 32 MHz in a different package. Neither is a pin-compatible drop-in — review the peripheral set and temp grade before substituting.