PIC18LF4610-I/P - 8-bit 40MHz 64KB Flash MCU | Microchip
MPN: PIC18LF4610-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.45 | $5,450.00 |
PIC18LF4610-I/P Overview
An 8-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU, memory, and peripherals on a single die; the PIC18 family uses an enhanced Harvard RISC architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access for higher throughput than von Neumann designs. Within Microchip's PIC portfolio, PIC18 sits above the PIC16 and PIC12 baseline series and below the 16-bit PIC24/dsPIC and 32-bit PIC32 lines, offering a balanced mix of performance, peripherals, and code density for embedded control.
Key features of the PIC18LF4610-I/P include 64KB Flash (32K x 16 words), 3,968 bytes of data RAM, 1,024 bytes of data EEPROM, a 10-bit multi-channel analog-to-digital converter (ADC), multiple timer modules, USART, MSSP (SPI/I2C), and nanoWatt power-management modes that drop quiescent current into the microamp range during sleep. The wide 2.0V-5.5V operating range makes it suitable for both battery-powered and 5V industrial designs.
Typical applications include industrial control panels, HVAC thermostats, sensor interfaces, low-power remote monitoring nodes, consumer appliance controllers, and automotive body electronics subsystems. The 36 I/O pins plus on-chip ADC and serial peripherals support a wide variety of mixed-signal interfaces without external glue logic.
When designing with this part, allocate an oscillator and decoupling capacitor arrangement per the datasheet; incorrect MCLR pull-up or bypassing is a common cause of code-protection and brown-out issues. Industrial-grade temperature range (-40C to +85C) suits outdoor and factory environments but excludes under-hood automotive use, where the AEC-Q100-qualified variants should be selected instead.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement - and go beyond - the manufacturer datasheet for faster BOM decisions.
Drop-in alternatives for PIC18LF4610-I/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18LF4610-I/P (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Timers, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF4620-I/P
✅ Drop-In✓ In Stock
$8.3 / Unit
View Datasheet →PIC18F4610-I/P
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC18LF4520-I/PT
✅ Drop-In✓ In Stock
$5.21 / Unit
View Datasheet →PIC18LF4510-I/P
✅ Drop-In✓ In Stock
$5.34 / Unit
View Datasheet →PIC18LF458-I/PT
✅ Drop-In✓ In Stock
$6.12 / Unit
View Datasheet →PIC18LF4580-I/P
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC18LF4610-I/P Maximum Ratings & Electrical Characteristics
| Product Family | PIC18F |
| Core | 8-bit PIC RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 3,968 bytes |
| Data EEPROM | 1,024 bytes |
| Maximum CPU Frequency | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Number of I/O Pins | 36 |
| ADC | 10-bit, multi-channel |
| Timers | Multiple 8-bit and 16-bit |
| Communication Peripherals | USART, MSSP (SPI / I2C) |
| Package | 40-pin PDIP (DIP-40) |
| Mounting Type | Through-Hole |
| Power-Saving Technology | nanoWatt |
| RoHS Status | Compliant |
| MSL Level | Not Applicable (through-hole) |
PIC18LF4610-I/P Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 4 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC negative reference |
| Pin 5 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC positive reference |
| Pin 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — Digital I/O / Analog input channel 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — Digital I/O / Parallel port |
| Pin 9 | RE1/WR/AN6 — Digital I/O / Parallel port |
| Pin 10 | RE2/CS/AN7 — Digital I/O / Parallel port |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Oscillator crystal input / external clock input |
| Pin 14 | OSC2/CLKO — Oscillator crystal output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| Pin 16 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| Pin 17 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| Pin 18 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — Digital I/O / Parallel slave port data 0 |
| Pin 20 | RD1/PSP1 — Digital I/O / Parallel slave port data 1 |
| Pin 21 | RD2/PSP2 — Digital I/O / Parallel slave port data 2 |
| Pin 22 | RD3/PSP3 — Digital I/O / Parallel slave port data 3 |
| Pin 23 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Pin 24 | RC5/SDO — Digital I/O / SPI data out |
| Pin 25 | RC6/TX/CK — Digital I/O / USART TX / USART clock |
| Pin 26 | RC7/RX/DT — Digital I/O / USART RX / USART data |
| Pin 27 | RD4/PSP4 — Digital I/O / Parallel slave port data 4 |
| Pin 28 | RD5/PSP5 — Digital I/O / Parallel slave port data 5 |
| Pin 29 | RD6/PSP6 — Digital I/O / Parallel slave port data 6 |
| Pin 30 | RD7/PSP7 — Digital I/O / Parallel slave port data 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Pin 34 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Pin 35 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Pin 36 | RB3/INT3/CCP2 — Digital I/O / External interrupt 3 / CCP2 alternate |
| Pin 37 | RB4 — Digital I/O |
| Pin 38 | RB5 — Digital I/O |
| Pin 39 | RB6/PGC — Digital I/O / ICSP clock |
| Pin 40 | RB7/PGD — Digital I/O / ICSP data |
Typical Applications
PIC18LF4610-I/P is suitable for 7 applications: Industrial Control Panels, HVAC Thermostats, Sensor Interface Modules, Low-Power Remote Monitoring Nodes, Consumer Appliance Controllers, Automotive Body Electronics Subsystems, Educational and Hobby Projects.
Industrial Control Panels
The PIC18LF4610-I/P fits industrial control panels because it combines 64KB Flash with 36 I/O lines and a 10-bit ADC for reading panel-mounted sensors and switches. Its 2.0V-5.5V supply range tolerates 24V-sourced industrial rails after regulation, and the nanoWatt sleep modes reduce standby current for always-on panel controllers. Industrial temperature grade (-40C to +85C) covers factory-floor environments. Drop the MCU on a 40-pin PDIP footprint for hand-solderable prototyping and field repair, with USART or MSSP peripherals driving a 4-20mA loop, Modbus RTU link, or character LCD. The 3,968-byte RAM and 1,024-byte EEPROM support local menu state and persistent configuration without external memory.
Recommended
HVAC Thermostats
The PIC18LF4610-I/P is well-suited to HVAC thermostat designs where 64KB Flash hosts full-featured UI and PID control firmware. The 10-bit ADC reads thermistor temperature sensors, while the timer modules drive TRIAC-based heater/cool stage switching; the wide 2.0V-5.5V supply allows direct operation from a 24VAC-rectified rail. NanoWatt sleep between user interactions keeps the standby draw below typical thermostat energy-budget limits, and the 40-pin PDIP footprint supports through-hole assembly that survives contractor wiring stress. The 1,024-byte EEPROM retains setpoints and schedule data across power cycles, eliminating external NVRAM.
Recommended
Sensor Interface Modules
Use the PIC18LF4610-I/P as a sensor-interface concentrator: the 10-bit ADC multiplexes multiple analog channels, USART handles external digital sensors, and MSSP provides SPI or I2C for third-party sensor ICs. With 64KB Flash, the MCU can host a full Modbus RTU or custom protocol stack, plus local calibration tables. Industrial temperature grade matches outdoor and process-control environments; the 2.0V-5.5V supply allows direct battery or 3.3V sensor-bus operation. Through-hole 40-pin PDIP aids hand prototyping and replacement in legacy 8-bit installations, and the 3,968-byte RAM supports sizeable input FIFOs for streaming sensor data.
Recommended
Low-Power Remote Monitoring Nodes
The PIC18LF4610-I/P is an excellent fit for battery-powered remote monitoring nodes thanks to its nanoWatt sleep modes, where quiescent current drops to the microamp range during idle periods. It can wake periodically to read sensors via the 10-bit ADC, transmit over USART-connected radios, and return to sleep - stretching coin-cell or lithium pack life to multi-year horizons. The 2.0V-5.5V supply works directly from a 3.6V lithium thionyl chloride cell, and 64KB Flash stores buffering and over-the-air update logic. Industrial temperature grade supports outdoor deployment; the 40-pin PDIP enables ruggedized enclosure assembly.
Recommended
Consumer Appliance Controllers
Consumer appliance controllers (washing machines, dishwashers, microwave ovens) use the PIC18LF4610-I/P for its 64KB Flash and 36 I/O lines to drive keypads, character LCDs, TRIAC loads, and rotary encoders while reading NTC sensors through the 10-bit ADC. Its 2.0V-5.5V supply simplifies multi-voltage designs with 3.3V logic displays, and 1,024-byte EEPROM stores user presets and diagnostic logs. Industrial temperature grade handles kitchen and laundry environments. The 40-pin PDIP package simplifies through-hole assembly for cost-sensitive appliance production lines and supports easy field service replacement.
Recommended
Automotive Body Electronics Subsystems
The PIC18LF4610-I/P handles automotive body-electronics subsystems (window controllers, mirror adjusters, lighting modules) where 64KB Flash hosts full LIN stack and body-control logic. The 10-bit ADC reads current sensors for short-circuit detection, and the MSSP peripheral drives LIN transceivers via UART mode. While the part itself is not AEC-Q100 qualified, the wide 2.0V-5.5V supply tolerates 12V-battery transients after regulation. The 40-pin PDIP package is preferred for prototype and aftermarket modules; production automotive designs should migrate to AEC-Q100-qualified QFN variants. NanoWatt sleep keeps parasitic-drain low when the vehicle is parked.
Recommended
Educational and Hobby Projects
The PIC18LF4610-I/P is a favorite for educational and hobby microcontroller projects because the 40-pin PDIP package fits standard breadboards and 0.6 inch DIP prototyping PCBs, allowing easy hand wiring. With 64KB Flash it accommodates extensive student projects and bootloader experiments, while 36 I/O pins leave ample room for sensors, LEDs, displays, and motor drivers. The 2.0V-5.5V range allows operation from a single 3.3V or 5V breadboard rail, and the industrial temperature grade prevents classroom surprises. The PIC18 instruction set and free MPLAB X IDE support a vast library of tutorials, application notes, and community examples.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF4610-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF4620-I/P | PIC18F4610-I/P | PIC18LF4520-I/P | PIC18LF4510-I/P | PIC18LF4580-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB | 32 KB |
| Data RAM | 3,968 bytes | 3,968 bytes | 3,968 bytes | 1,536 bytes | 1,536 bytes | 1,536 bytes |
| Operating Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| CAN Peripheral | No | Yes | No | No | No | No (CAN on PIC18F4580 F variant) |
Key Differentiators
- Largest Flash density in the 40-pin PDIP PIC18F46x0 family (vs PIC18LF4520-I/P)
- Wide-voltage nanoWatt operation (vs PIC18F4610-I/P)
- 3,968-byte RAM (vs PIC18LF4510-I/P)
- Industrial temperature grade on a through-hole package (vs PIC18LF4620-I/P)
Design Notes
Estimated: when operating from a 5V supply with all 36 I/O pins unloaded, the PIC18LF4610-I/P draws roughly 15-20 mA active and below 1 uA in sleep (per Microchip datasheet electrical characteristics). For battery-powered designs, switch the ADC reference off and disable unused peripherals before issuing the sleep instruction to reach the lowest nanoWatt current floor.
Place a 100 nF decoupling capacitor as close as possible to each VDD/AVDD pin pair (pins 11-12 and 31-32). Add a 10 uF bulk capacitor near the MCU inlet. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD for reliable operation; omitting this is the most common cause of intermittent resets on prototype boards.
Do not confuse the LF (wide-voltage 2.0-5.5V) and F (4.2-5.5V) variants when designing 3.3V-only systems - the F variant will fail to operate or behave erratically below 4.2V. Also confirm the LVP (low-voltage programming) configuration bit matches your in-circuit programmer; a wrong LVP setting can lock the ICSP interface and require high-voltage programming to recover.
Keep the analog inputs (RA0-RA5, RE0-RE2) routed away from switching nodes and clock traces to preserve ADC accuracy. Use a ground island under the AVSS/VDD pair and bypass the analog supply with a separate 100 nF capacitor. The PIC18 ADC's 10-bit resolution is easily degraded by digital switching noise on adjacent traces.
Compliance Information
RoHS and REACH compliance confirmed by Microchip product page. Not AEC-Q100 qualified - select AEC-Q100 QFN variants for automotive under-hood designs.
