PIC18F65J10-I/PT - 8-bit 40MHz 32KB Flash MCU 64-TQFP | Microchip
MPN: PIC18F65J10-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.02 | $7.02 |
| 10 | $6.38 | $63.80 |
| 100 | $5.5 | $550.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
PIC18F65J10-I/PT Overview
A PIC (Peripheral Interface Controller) microcontroller is a microcontroller family built around Microchip's Harvard-architecture RISC core, which separates program and data buses to allow simultaneous instruction fetch and operand access. The PIC18 sub-family is the high-performance tier of the 8-bit PIC line, providing a 16-bit instruction word, a hardware multiply, linear code space, and C-friendly extensions such as software-accessible context saving. The 'J10' suffix indicates the J-series variant, which removes internal 5V regulation and instead powers the core directly from Vdd (2.0-3.6V) while I/O remains 5V-tolerant.
Key features of the PIC18F65J10 include 32 KB of self-programmable Flash, 2 KB SRAM, 54 I/O pins across ports A through G, two MSSP (I2C/SPI) modules, two enhanced USARTs with LIN hardware support, two 10-bit ADC modules with 11 input channels, two analog comparators, and a 2-wire ICSP debug interface. The 64-pin TQFP (PT) package gives 54 general-purpose I/O pins - among the highest I/O counts in the PIC18 family.
Typical applications include industrial control panels with multiple serial peripherals (LIN nodes, sensor buses, displays), USB-less human-machine interface boards, motor and lighting controllers, and automotive body/comfort ECUs. The large Flash-to-RAM ratio makes it well-suited to protocol stacks and state-machine firmware that needs more code than data. The J10's lack of internal 5V LDO simplifies board power design when 3.3V rails already exist.
When designing with the PIC18F65J10, ensure Vdd stays within 2.0-3.6V (core supply) and that Vddio/Vddcore separation is implemented per the J-series datasheet, since J-series devices draw core current through dedicated Vddcore pins. Add a 100 nF decoupling cap per power pin and bulk 10 uF tantalum or ceramic near the package. Use the MPLAB Snap or ICD 3 programmer via the ICSP pins (PGEC1/PGED1).
Drop-in alternatives for PIC18F65J10-I/PT — 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 PIC18F65J10-I/PT (same form factor and footprint) — differing in ADC, Package, Timers, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F66J10-I/PT
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC18F65J11-I/PT
✅ Drop-In✓ In Stock
$4.35 / Unit
View Datasheet →PIC18F65J10-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F65J10T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.35 / Unit
View Datasheet →PIC18F66J11-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F65J10-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Family | PIC18J-series |
| Flash Program Memory | 32 KB (16K x 16) |
| SRAM | 2 KB |
| Maximum Clock Speed | 40 MHz |
| Instruction Throughput | Up to 16 MIPS |
| Supply Voltage (Vdd/Vddio) | 4.2 V to 5.5 V |
| Core Supply Voltage (Vddcore) | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (industrial, '-I' suffix) |
| Digital I/O Pins | 54 |
| Package | 64-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| ADC | 10-bit, 11 input channels |
| Analog Comparators | 2 |
| UART / EUSART Modules | 2 (LIN-capable) |
| I2C / SPI (MSSP) Modules | 2 |
| Timers | 5 (8/16-bit) |
| PWM Channels | 4 CCP / ECCP |
| ICSP Debug Interface | Yes (2-wire) |
| RoHS Status | Compliant |
PIC18F65J10-I/PT Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (reset) input / 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/AN4 — PORTA bit 4 / analog input 4 |
| Pin 7 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| Pin 8 | RA6 — PORTA bit 6 (OSC2) |
| Pin 9 | RA7 — PORTA bit 7 (OSC1) |
| Pin 10 | Vddcore — Core supply voltage (2.0-3.6V) |
| Pin 11 | Vss — Core ground |
| Pin 12 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pin 13 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 14 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 15 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| Pin 16 | RB4/KBI0 — PORTB bit 4 / interrupt-on-change |
| Pin 17 | RB5/KBI1 — PORTB bit 5 / interrupt-on-change |
| Pin 18 | RB6/KBI2/PGC — PORTB bit 6 / ICSP clock |
| Pin 19 | RB7/KBI3/PGD — PORTB bit 7 / ICSP data |
| Pin 20 | Vddio — I/O supply voltage (4.2-5.5V) |
| Pin 21 | Vss — I/O ground |
| Pin 22 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| Pin 23 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| Pin 24 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pin 25 | RC3/SCL1 — PORTC bit 3 / I2C1 clock |
| Pin 26 | RC4/SDA1 — PORTC bit 4 / I2C1 data |
| Pin 27 | RC5/SDO1 — PORTC bit 5 / SPI1 data out |
| Pin 28 | RC6/TX1/CK1 — PORTC bit 6 / UART1 TX / clock |
| Pin 29 | RC7/RX1/DT1 — PORTC bit 7 / UART1 RX / data |
| Pin 30 | Vddcore — Core supply voltage |
| Pin 31 | Vss — Core ground |
| Pin 32 | RD0 — PORTD bit 0 |
| Pin 33 | RD1 — PORTD bit 1 |
| Pin 34 | RD2 — PORTD bit 2 |
| Pin 35 | RD3 — PORTD bit 3 |
| Pin 36 | RD4 — PORTD bit 4 |
| Pin 37 | RD5 — PORTD bit 5 |
| Pin 38 | RD6 — PORTD bit 6 |
| Pin 39 | RD7 — PORTD bit 7 |
| Pin 40 | Vddio — I/O supply voltage |
| Pin 41 | Vss — I/O ground |
| Pin 42 | RE0/AN6 — PORTE bit 0 / analog input 6 |
| Pin 43 | RE1/AN7 — PORTE bit 1 / analog input 7 |
| Pin 44 | RE2/AN8 — PORTE bit 2 / analog input 8 |
| Pin 45 | RE3/AN9 — PORTE bit 3 / analog input 9 (shared with MCLR) |
| Pin 46 | Vddio — I/O supply voltage |
| Pin 47 | Vss — I/O ground |
| Pin 48 | RF0/AN10 — PORTF bit 0 / analog input 10 |
| Pin 49 | RF1/AN11 — PORTF bit 1 / analog input 11 |
| Pin 50 | RF2 — PORTF bit 2 |
| Pin 51 | RF3 — PORTF bit 3 |
| Pin 52 | RF4 — PORTF bit 4 |
| Pin 53 | RF5 — PORTF bit 5 |
| Pin 54 | RF6 — PORTF bit 6 |
| Pin 55 | RF7 — PORTF bit 7 |
| Pin 56 | Vddcore — Core supply voltage |
| Pin 57 | Vss — Core ground |
| Pin 58 | RG0/CCP3 — PORTG bit 0 / CCP3 PWM output |
| Pin 59 | RG1/TX2/CK2 — PORTG bit 1 / UART2 TX |
| Pin 60 | RG2/RX2/DT2 — PORTG bit 2 / UART2 RX |
| Pin 61 | RG3/CCP4 — PORTG bit 3 / CCP4 PWM output |
| Pin 62 | RG4 — PORTG bit 4 |
| Pin 63 | RG5 — PORTG bit 5 |
| Pin 64 | Vssio — I/O ground (last pin on TQFP) |
Typical Applications
PIC18F65J10-I/PT is suitable for 6 applications: Industrial Control Panel with Multi-Serial Interfaces, HMI / Operator Interface Board, Lighting and LED Control Node, Sensor Aggregation and Monitoring, Small Motor and Stepper Controller, Automotive Comfort / Body ECU (Non-AEC-Q100 Zone).
Industrial Control Panel with Multi-Serial Interfaces
The PIC18F65J10-I/PT is well matched to industrial control panels that aggregate several serial fieldbuses. Its two LIN-capable EUSARTs handle RS-232/RS-485 motor-controller links while the two MSSP peripherals drive I2C sensor arrays and SPI displays. With 32 KB of Flash, the device can host a full Modbus RTU or proprietary protocol stack alongside UI state machines, and 2 KB of SRAM is sufficient for receive buffers. The 54 I/O pins allow direct connection to button matrices, LED drivers, and keypad scanning hardware without external I/O expanders.
Recommended
HMI / Operator Interface Board
Human-machine interface boards for industrial equipment benefit from the PIC18F65J10-I/PT's large pin count. Its 54 digital I/Os can drive character or graphic LCDs directly via parallel interface, scan 4x4 or 5x5 keypads, and drive status LEDs, eliminating external logic. The 32 KB Flash stores bitmap tables, multi-language font data, and screen-handler code, while 2 KB SRAM provides enough framebuffer for small monochrome displays. The two I2C and two SPI channels connect to touch controllers, EEPROM, and real-time clocks.
Recommended
Lighting and LED Control Node
The PIC18F65J10-I/PT drives 4 CCP/ECCP PWM channels and 5 timers, enough to control dimmable RGBW LED drivers and stage lighting fixtures. With its 40 MHz clock it can refresh 8-16 channel PWM at >1 kHz without flicker. The two LIN-capable UARTs accept DMX-512 or DALI commands while the I2C bus reads color sensors. 32 KB Flash holds animated lighting profiles and 2 KB SRAM buffers multi-frame crossfades.
Recommended
Sensor Aggregation and Monitoring
The PIC18F65J10-I/PT aggregates sensor data from multiple buses in monitoring equipment. Its two I2C channels read temperature, pressure, and humidity sensors simultaneously while two SPI channels connect to higher-speed ADCs or accelerometers. The 10-bit ADC with 11 channels handles analog sensor inputs directly. 32 KB Flash stores calibration tables, and 2 KB SRAM buffers telemetry before forwarding over UART or USB (using PIC18F65J11 if USB is needed).
Recommended
Small Motor and Stepper Controller
Brushless DC and stepper motor controller boards use the PIC18F65J10-I/PT's PWM channels for commutation, the 10-bit ADC for back-EMF sensing, and LIN/UART for command input. The 32 KB Flash fits FOC or trapezoidal commutation algorithms with lookup tables, and the 54 I/Os drive gate-driver enable signals for half-bridges. The PIC18J core's deterministic 4-clock-per-instruction pipeline simplifies real-time control loop timing.
Recommended
Automotive Comfort / Body ECU (Non-AEC-Q100 Zone)
In non-AEC-Q100 automotive accessories and aftermarket products, the PIC18F65J10-I/PT's two LIN-capable UARTs drive LIN-bus nodes such as window lifters, seat controllers, or mirror adjusters. 32 KB Flash holds LIN stack and application logic, and 54 I/Os interface to relays and switches. For OEM-grade ECUs requiring AEC-Q100, select the extended-temperature PIC18F65J10-E/PT variant instead, but the standard part suits hobbyist, prototyping, and off-road applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F65J10-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F66J10-I/PT | PIC18F65J11-I/PT | PIC18F66J11-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same |
| Flash Program Memory | 32 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 2 KB | 4 KB | 2 KB | 4 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz | 48 MHz | 48 MHz |
| Digital I/O Pins | 54 | 54 | 52 | 52 |
| USB 2.0 | No | No | Yes (FS OTG) | Yes (FS OTG) |
| UART / EUSART Modules | 2 (LIN-capable) | 2 (LIN-capable) | 2 (LIN-capable) | 2 (LIN-capable) |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Higher RAM/Flash headroom in same 64-pin TQFP footprint (vs PIC18F66J10-I/PT)
- LIN-capable UART pair for automotive body networks (vs PIC18F65K22-I/PT)
- USB 2.0 option in same package (vs PIC18F65J11-I/PT)
Design Notes
The PIC18F65J10-I/PT (J-series) lacks an internal 5V-to-3.3V LDO. Both Vddcore (2.0-3.6 V) and Vddio (4.2-5.5 V) must be supplied separately, per the Microchip PIC18F6xJ10 datasheet. Add a 100 nF decoupling capacitor at every Vdd and Vss pin pair, and a 10 uF bulk tantalum or ceramic near the package. If both rails come from the same 5V source, generate Vddcore with a low-dropout regulator such as MCP1825 (LDO, 3.3V, 500 mA) to keep the core supply clean.
Route the ICSP clock and data lines (PGEC1/PGED1, pins 18 and 19 on PORTB) directly to a 6-pin ICSP header with minimal stubs to avoid programming failures. Place the 32.768 kHz crystal for Timer1 oscillator close to pins T1OSO/T1OSI (RC0/RC1). Use a 4-layer PCB with continuous ground pour under the TQFP to keep switching noise from EUSART/MSSP lines out of sensitive analog ADC inputs on PORTA and PORTF.
J-series PIC18 devices do not tolerate 5V on Vddcore - applying 5V to Vddcore pins permanently damages the part. Always verify that Vddcore is regulated to 2.0-3.6 V before applying 5V to Vddio. Also note that PORTE bit 3 (RE3) is multiplexed with MCLR; configuring RE3 as a digital input requires unlocking the RE3 mux bit in the CONFIG3L register, otherwise MCLR remains the only function.
Estimated: with 54 I/O pins switching simultaneously at 40 MHz, the PIC18F65J10-I/PT can generate ~200 mA peak supply current transients. Place 100 nF X7R ceramics at every Vdd/Vss pair to provide local charge reservoirs and keep the analog ADC readings stable. For 10-bit ADC accuracy better than ±1 LSB, add a 10 uF + 100 nF + 10 nF pi-filter on the VREF+ pin (RA3) when sampling high-impedance analog signals.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade -40 to +85 C; for automotive applications use the PIC18F65J10-E/PT extended-temperature variant which is AEC-Q100 qualified. Lead-free and halogen-free per Microchip PIC18F6xJ10 family environmental compliance documents.
