PIC18LF4510-I/P - 8-Bit 40MHz MCU, 32KB Flash | Microchip
MPN: PIC18LF4510-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.56 | $8.56 |
| 10 | $7.71 | $77.10 |
| 100 | $6.92 | $692.00 |
| 500 | $5.97 | $2,985.00 |
| 1,000 | $5.34 | $5,340.00 |
PIC18LF4510-I/P Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripheral interfaces (ADC, timers, UART, I/O ports, PWM, etc.) onto one IC. Within the semiconductor hierarchy, an MCU sits below microprocessor (MPU) and above digital logic ICs; PIC18F-family MCUs specifically target low-power, deterministic embedded control with a Harvard RISC architecture.
Key features include 1536 bytes of RAM, 256 bytes of data EEPROM, a 10-bit ADC with up to 13 input channels, multiple capture/compare/PWM modules, two USART ports, an MSSP (SPI/I2C) port, two 8-bit timers and three 16-bit timers, nanoWatt power management, and 36 digital I/O pins on the 40-pin DIP. The part is designed for 2.5V/3.3V/5V operation, providing flexible supply rail support for both portable and line-powered designs.
Architecturally, the PIC18LF4510 uses an enhanced 8-bit RISC core with a hardware multiplier, a 31-level deep hardware stack, and instruction-pipelined execution that yields up to 10 MIPS at 40 MHz. Code-compatible across the PIC18 family, it supports both C and assembly development under MPLAB X IDE and MPLAB XC8, with in-circuit debugging via ICD 3 or PICkit 4. The nanoWatt technology adds multiple low-power modes (Run, Idle, and several Sleep variants) selectable in firmware to extend battery life in power-constrained products.
Typical applications include industrial control panels, sensor conditioning with on-chip ADC, HVAC thermostats, motor control edge nodes, USB-to-UART bridges, smart energy metering, and automotive body electronics subsystems. The 40-pin PDIP format simplifies breadboard prototyping, legacy field replacements, and through-hole manufacturing for low-to-medium-volume products.
When designing with the PIC18LF4510-I/P, note that the -I suffix denotes the industrial temperature grade (-40C to +85C) and the /P package designator specifies the 40-pin PDIP. Decoupling caps of 100 nF plus bulk 10 uF should be placed within a few millimeters of VDD/VSS, and unused I/O pins must be configured as outputs low to minimize current draw in Sleep mode.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet, with values verified against DigiKey, Mouser, and Octopart as of 2026-09-28.
Drop-in alternatives for PIC18LF4510-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 PIC18LF4510-I/P (same form factor and footprint) — differing in Operating Temperature, Package, Timers, ADC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F4510-I/P
✅ Drop-In✓ In Stock
$5.27 / Unit
View Datasheet →PIC18LF4520-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4420-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4550-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4515-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF4510-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC18 (8-bit RISC) |
| CPU Speed | 40 MHz (10 MIPS) |
| Program Memory | 32 KB Flash (16K x 16) |
| RAM | 1536 bytes |
| EEPROM | 256 bytes |
| Supply Voltage | 2.5 V / 3.3 V / 5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Communication | 2 x USART (EUSART), MSSP (SPI/I2C) |
| CCP/ECCP Modules | Multiple (PWM/capture/compare) |
| Package | 40-pin PDIP |
| Operating Temperature | -40 C to +85 C (Industrial, -I) |
| Power-Saving Modes | Run, Idle, Sleep (nanoWatt) |
| Mounting Type | Through-Hole |
PIC18LF4510-I/P Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (reset) input or digital I/O RE3 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 14 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 I/O |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pin 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 36 | RB3/CCP2 — PORTB bit 3 / CCP2 I/O (alternate) |
| Pin 37 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Pin 38 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Pin 39 | RB6/PGC — PORTB bit 6 / in-circuit debugger clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / in-circuit debugger data |
Typical Applications
PIC18LF4510-I/P is suitable for 6 applications: Industrial Control Panel, HVAC Thermostat, Sensor Signal Conditioning Node, Motor Control Edge Node, Educational / Hobbyist Embedded Platform, Automotive Body Electronics (12V Subsystem).
Industrial Control Panel
The PIC18LF4510-I/P fits industrial control panel front-ends thanks to its 40 MHz core delivering 10 MIPS, 36 digital I/O pins, and a 13-channel 10-bit ADC for sensor scanning and discrete actuator drive. The wide 2.0-5.5V supply range lets the same board accept 3.3V sensor rails or 5V PLC backplanes without level shifters. Its 40-pin PDIP format simplifies through-hole assembly for low-volume panels and field serviceability. nanoWatt Sleep modes keep quiescent draw below typical watchdog-supervised panel needs. Per Microchip application note AN1229, the device supports fail-safe clock monitor and brown-out reset, both critical for unattended industrial installations.
Recommended
HVAC Thermostat
The PIC18LF4510-I/P suits HVAC thermostat designs because its 32 KB Flash supports a UI state machine, scheduling logic, and a small TCP/IP or Modbus stack over the on-chip USART. The 13-channel 10-bit ADC handles thermistor inputs, humidity sensors, and potentiometer setpoints simultaneously. The wide 2.5-5.5V operating range accommodates both battery backup and 24VAC-derived supplies. With a -40C to +85C industrial grade, the device survives attic-mounted thermostat enclosures. Microchip's nanoWatt Idle mode and peripheral clock gating keep standby draw negligible between HVAC cycles.
Recommended
Sensor Signal Conditioning Node
The PIC18LF4510-I/P acts as a sensor front-end node, leveraging its 13-channel 10-bit ADC, two USARTs, and an MSSP channel to bridge 4-20 mA loops, I2C sensors, and RS-485 trunks. The 32 KB Flash accommodates digital filtering (FIR/IIR), linearization, and Modbus RTU framing. Its wide-voltage LF operation lets the same firmware run on 3.3V battery packs or 5V PLC tap power. The PIC18LF4510's hardware multiplier and 10 MIPS core can process oversampling averages at >10 kS/s aggregate, suitable for multi-sensor industrial nodes. PIC-IoT WA series is recommended when cloud connectivity is added.
Recommended
Motor Control Edge Node
The PIC18LF4510-I/P can drive small DC and stepper motors via its multiple CCP/ECCP PWM modules while simultaneously reading encoder feedback through the capture inputs. The 36 I/O pins handle direction lines, enable signals, and tachometer input. The 32 KB Flash is sufficient to implement trapezoidal commutation and soft-start ramps in C, and the wide 2.0-5.5V supply supports both 3.3V logic-level FET drivers and 5V legacy interface drivers. Per Microchip AN1079, this PIC18 family drives 3-phase BLDC when paired with appropriate gate drivers. The PDIP package aids prototyping before committing to SMD.
Recommended
Educational / Hobbyist Embedded Platform
The PIC18LF4510-I/P is widely adopted in undergraduate embedded courses and hobbyist projects due to its through-hole 40-pin DIP form factor, which fits standard breadboards and zero-force IC sockets. The 32 KB Flash accommodates compiled XC8 C code, while 1536 bytes of RAM supports stack-rich programs with reasonable local variable depth. The on-chip USART, MSSP, and PWM peripherals map directly to textbook chapter examples. MPLAB X IDE with PICkit 4 or ICD 4 supports in-circuit programming and debugging, allowing students to step through code in real hardware. The wide 2.0-5.5V range tolerates lab power supply errors.
Recommended
Automotive Body Electronics (12V Subsystem)
The PIC18LF4510-I/P serves in automotive body modules (window lift, mirror adjust, interior lighting controllers) where its industrial -40 to +85 C temperature grade covers most cabin locations. The 13-channel 10-bit ADC reads multi-position switches and current-sensing shunts. Two USARTs support LIN via external transceiver or legacy UART diagnostics. While not AEC-Q100 qualified, it remains popular in aftermarket and pre-production 12V modules where LF wide-voltage tolerance (compatible with 9-16V post-crank automotive rails via external regulator) is valuable. For production automotive designs, Microchip recommends PIC18F46K42 or dsPIC33AEC automotive parts.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF4510-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F4510-I/P | PIC18LF4520-I/P | PIC18LF4420-I/P | PIC18LF4550-I/P | PIC18LF4515-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 |
| Flash Memory | 32 KB | 32 KB | 32 KB | 8 KB | 32 KB | 48 KB |
| RAM | 1536 bytes | 1536 bytes | 1536 bytes | 768 bytes | 2048 bytes | 1536 bytes |
| Operating Voltage | 2.0 - 5.5 V | 4.2 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V |
| CPU Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 48 MHz | 40 MHz |
| USB Peripheral | No | No | No | No | Yes (USB 2.0 FS) | No |
| ADC Channels | 13 | 13 | 13 | 13 | 13 | 13 |
Key Differentiators
- Wide 2.0-5.5V operating range with 32 KB Flash in 40-pin PDIP (vs PIC18F4510-I/P)
- Compact 32 KB Flash, no USB overhead for cost-sensitive analog conditioning (vs PIC18LF4550-I/P)
- Larger Flash headroom (48 KB) with identical pinout (vs PIC18LF4515-I/P)
Design Notes
Estimated: Decouple VDD/VSS with a 100 nF X7R ceramic placed within 5 mm of pins 11 and 31, plus a 10 uF bulk capacitor. The PIC18LF4510-I/P dual VDD/VSS pairs (pins 11/12 and 31/32) require separate bypasses for each rail pair per Microchip AN588. Add a 10 uF bulk cap near the AVDD/AVSS pins if used for ADC measurements. nanoWatt Sleep current is typically <1 uA with all peripherals disabled and RTCC enabled.
For the 40-pin PDIP, place a 4.7 kohm pull-up on MCLR (pin 1) for clean power-on reset, or use Microchip's recommended 10 kohm if noise immunity is needed. Keep the trace from MCLR short (<25 mm) and avoid routing high-speed switching signals near it. The ICSP pins RB6/PGC (pin 39) and RB7/PGD (pin 40) require isolation resistors (typically 4.7 kohm) on production boards to allow in-circuit programming without disturbing the application circuit.
Do not leave unused I/O pins floating - configure them as outputs driving low (to avoid shoot-through current). Set CONFIG settings (BOREN, PWRT, WDT) carefully in MPLAB X during code initialization. The LF prefix variants must not be run above 5.5V or the device may latch. Always verify the configuration bits match your chosen crystal or oscillator; the PIC18LF4510 supports HS, XT, LP, EC, and RC modes from 32 kHz up to 40 MHz. Read the silicon errata DS80099 before signing off the design.
Estimated: For ADC accuracy, add a 100 nF cap on each analog input near the pin, and route analog traces away from digital switching lines. The ADC reference inputs (RA2/VREF-, RA3/VREF+) should each have a 10 uF + 100 nF decoupling pair. Avoid using ADC channels on pins that double as parallel-slave-port data lines unless carefully timed. For SPI at 4 MHz+ over long traces, add 100 ohm source terminations. I2C MSSP lines need 2.2-4.7 kohm pull-ups per the I2C specification.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade -40 to +85C. Not AEC-Q100 qualified - use PIC18F46K42 or dsPIC33 AEC-Q100 parts for automotive.
