PIC18F65J11-I/PT - 8-bit PIC18 MCU, 32KB Flash, 40MHz, TQFP-64 | Microchip
MPN: PIC18F65J11-I/PT ✓ Hoạt độngPIC18F65J11-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a compact computing-on-a-chip that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals into a single silicon die. The PIC18 family is a high-performance 8-bit architecture with an enhanced instruction set, hardware multiplier, and C-friendly design. Positioned in the broader taxonomy, an MCU sits within the semiconductor > integrated circuit > microcontroller > 8-bit MCU hierarchy, and is widely used where deterministic real-time control, low cost, and ease of programming outweigh the need for higher CPU throughput.
Key differentiating features of the PIC18F65J11 include 32KB of self-programmable Flash organized as 16K x 16 words, an internal 8 MHz oscillator with PLL options, dual analog comparators, two USART modules, a master I2C and SPI peripheral set, four 16-bit timers, and nanoWatt Technology power modes that lower sleep current below typical competitors. The device also supports in-circuit serial programming (ICSP) and In-Circuit Debug (ICD) for production-friendly firmware development.
Architecturally, the PIC18J core employs a 16-bit instruction word with Harvard bus separation and a hardware multiply engine, providing 10 MIPS at 40 MHz. The 64-pin TQFP package exposes the full peripheral set including external memory interfaces, making this part well-suited to applications that demand both signal conditioning and user-interface handling.
Typical applications for the PIC18F65J11-I/PT include data loggers, industrial controllers, automotive body and climate modules, consumer appliances, USB peripherals, and general-purpose embedded control. With 51 available I/O pins, designers can drive keypads, LCDs, multiple sensors, and communication buses without external glue logic.
When designing with this MCU, reserve one I/O pin for the MCLR reset function and add the recommended 10 kohm pull-up plus a decoupling capacitor as per Microchip application note guidelines. Surface-mount TQFP-64 assembly requires standard JEDEC MS-026 land patterns and reflow profiles consistent with Pb-free / RoHS-compliant SAC305 solder.
This page synthesizes distributor stock and pricing, validated drop-in alternatives, and practical design notes not found in the standalone datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F65J11-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F65J11-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, Timers, I/O Pins.
PIC18F65J10-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J11T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F66J11-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F67J11-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F85J11-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F64J11-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J11-I/PT Tỷ lệ tối đa & tính chất điện
| Architecture | PIC18J, 8-bit RISC, 16-bit instruction word |
| Program Memory | 32 KB Flash (16K x 16 words), self-programmable |
| Data RAM | 2048 bytes |
| Operating Frequency | Up to 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 51 digital I/O (54 port pins total) |
| ADC | 12-channel, 10-bit |
| Timers | 4 x 16-bit timers |
| Communication | 2x USART, 1x SPI, 1x I2C (Master) |
| Comparators | 2 analog comparators |
| Internal Oscillator | 8 MHz with PLL options |
| Power-Saving Modes | nanoWatt Technology (sleep, run, idle, etc.) |
| Hộp | TQFP-64 (10x10 mm, 1.0 mm height, MS-026) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, '-I') |
| Programming/Debug | ICSP and ICD (In-Circuit Serial Programming & Debug) |
| Trạng thái RoHS | Compliant (Pb-free TQFP) |
Cấu hình chân PIC18F65J11-I/PT
| Chân 1 | RC2/PWM1 — I/O port C bit 2 / PWM output |
| Chân 2 | RC3/SCL — I/O port C bit 3 / I2C clock |
| Chân 3 | RC4/SDA — I/O port C bit 4 / I2C data |
| Chân 4 | RC5/SDO — I/O port C bit 5 / SPI data out |
| Chân 5 | RC6/TX1 — I/O port C bit 6 / USART1 TX |
| Chân 6 | RC7/RX1 — I/O port C bit 7 / USART1 RX |
| Chân 7 | RD0 — I/O port D bit 0 |
| Chân 8 | RD1 — I/O port D bit 1 |
| Chân 9 | RD2 — I/O port D bit 2 |
| Chân 10 | RD3 — I/O port D bit 3 |
| Chân 11 | RC0/T1OSO — I/O port C bit 0 / Timer1 oscillator output |
| Chân 12 | RC1/T1OSI — I/O port C bit 1 / Timer1 oscillator input |
| Chân 13 | RG4 — I/O port G bit 4 |
| Chân 14 | RG3 — I/O port G bit 3 |
| Chân 15 | RG2 — I/O port G bit 2 |
| Chân 16 | RG1 — I/O port G bit 1 |
| Chân 17 | RG0 — I/O port G bit 0 |
| Chân 18 | RA0/AN0 — I/O port A bit 0 / ADC input 0 |
| Chân 19 | RA1/AN1 — I/O port A bit 1 / ADC input 1 |
| Chân 20 | RA2/AN2 — I/O port A bit 2 / ADC input 2 |
| Chân 21 | RA3/AN3 — I/O port A bit 3 / ADC input 3 |
| Chân 22 | RA4/T0CKI — I/O port A bit 4 / Timer0 clock input |
| Chân 23 | RA5/AN4 — I/O port A bit 5 / ADC input 4 |
| Chân 24 | VSS — Ground reference |
| Chân 25 | VDD — Positive supply (2.0-3.6V) |
| Chân 26 | RB0/INT0 — I/O port B bit 0 / External interrupt 0 |
| Chân 27 | RB1/INT1 — I/O port B bit 1 / External interrupt 1 |
| Chân 28 | RB2/INT2 — I/O port B bit 2 / External interrupt 2 |
| Chân 29 | RB3/INT3 — I/O port B bit 3 / External interrupt 3 |
| Chân 30 | RB4 — I/O port B bit 4 |
| Chân 31 | RB5 — I/O port B bit 5 |
| Chân 32 | RB6/PGC — I/O port B bit 6 / ICSP clock |
| Chân 33 | RB7/PGD — I/O port B bit 7 / ICSP data |
| Chân 34 | AVDD — Analog supply for ADC |
| Chân 35 | AVSS — Analog ground for ADC |
| Chân 36 | RD4 — I/O port D bit 4 |
| Chân 37 | RD5 — I/O port D bit 5 |
| Chân 38 | RD6 — I/O port D bit 6 |
| Chân 39 | RD7 — I/O port D bit 7 |
| Chân 40 | RE0/RD — I/O port E bit 0 / Parallel port read strobe |
| Chân 41 | RE1/WR — I/O port E bit 1 / Parallel port write strobe |
| Chân 42 | RE2/CS — I/O port E bit 2 / Parallel port chip select |
| Chân 43 | RF0 — I/O port F bit 0 |
| Chân 44 | RF1 — I/O port F bit 1 |
| Chân 45 | RF2 — I/O port F bit 2 |
| Chân 46 | RF3 — I/O port F bit 3 |
| Chân 47 | RF4 — I/O port F bit 4 |
| Chân 48 | RF5 — I/O port F bit 5 |
| Chân 49 | RF6 — I/O port F bit 6 |
| Chân 50 | RF7 — I/O port F bit 7 |
| Chân 51 | VSS — Ground reference |
| Chân 52 | VDD — Positive supply (2.0-3.6V) |
| Chân 53 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Chân 54 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 55 | RH0 — I/O port H bit 0 |
| Chân 56 | RH1 — I/O port H bit 1 |
| Chân 57 | RH2 — I/O port H bit 2 |
| Chân 58 | RH3 — I/O port H bit 3 |
| Chân 59 | RE3 — I/O port E bit 3 |
| Chân 60 | RE4 — I/O port E bit 4 |
| Chân 61 | RE5 — I/O port E bit 5 |
| Chân 62 | RE6 — I/O port E bit 6 |
| Chân 63 | RE7 — I/O port E bit 7 |
| Chân 64 | MCLR — Master clear reset (active-low), requires external pull-up |
Ứng dụng tiêu biểu
PIC18F65J11-I/PT phù hợp cho 7 Áp dụngs: Battery-Powered Data Logger, Industrial Control PLC Module, Automotive Body and Climate Module, Consumer Appliance Control Board, USB Human Interface Device, HVAC Sensor Hub, Smart Home Edge Controller.
Battery-Powered Data Logger
The PIC18F65J11-I/PT fits battery-powered data loggers thanks to its nanoWatt Technology sleep modes and wide 2.0V-3.6V operating range. With 32KB Flash it can store MPLAB XC8-compiled firmware plus calibration lookup tables, while 2048 bytes RAM buffers sensor reads between SD card writes. The 12-channel 10-bit ADC handles multi-sensor inputs (temperature, humidity, voltage) directly, and 51 I/O pins drive SD card SPI, RTC I2C, and status LEDs without external glue logic. Industrial -40C to +85C operation supports outdoor and cold-chain deployments.
Được đề xuất
Industrial Control PLC Module
The PIC18F65J11-I/PT is well matched to industrial control PLC I/O modules where 51 digital I/O pins directly drive relays, opto-isolators, and 24V signal conditioning. The 40 MHz core executes 10 MIPS, sufficient for PID loop control and Modbus RTU polling over USART. Two analog comparators enable threshold-based alarms without external op-amps. The wide VDD range accepts 24V industrial rails after regulation, and the -40C to +85C temperature rating covers factory floor conditions. ICSP allows firmware updates in deployed cabinets without desoldering.
Được đề xuất
Automotive Body and Climate Module
The PIC18F65J11-I/PT is used in automotive body controllers, HVAC climate modules, and seat-control units where its 12-channel ADC reads thermistors and potentiometers directly. Two USART interfaces connect to LIN sub-bus controllers and diagnostic interfaces, while the I2C peripheral drives digital temperature sensors and EEPROM. The wide supply range tolerates 12V automotive battery transients after regulation, and the TQFP-64 footprint supports compact under-dash mounting. Designers add AEC-Q100 qualified parts for production; this part is industrial-grade only.
Được đề xuất
Consumer Appliance Control Board
In consumer appliances such as washing machines, dishwashers, and microwave ovens, the PIC18F65J11-I/PT drives keypads, character LCDs, buzzer feedback, and triac-controlled motor/ heater loads through its 51 I/O pins. The nanoWatt Technology sleep mode cuts standby current below typical appliance energy-star limits, and the 32KB Flash holds state-machine firmware plus menu localization tables. ICSP enables factory-side firmware provisioning for regional SKUs. The 10 MIPS performance handles real-time user interface response without perceivable lag.
Được đề xuất
USB Human Interface Device
The PIC18F65J11-I/PT serves as the host MCU in low-speed USB Human Interface Devices (HIDs) such as custom keyboards, macro pads, and HID-class game controllers when paired with an external USB transceiver. The two USARTs handle USB-to-UART bridging or MIDI I/O, and the SPI peripheral drives RGB LED chains for status backlighting. With 32KB Flash, the MCU runs HID report descriptors plus macro scripting. Industrial temperature rating supports gaming peripheral and KVM switch applications in demanding environments.
Được đề xuất
HVAC Sensor Hub
The PIC18F65J11-I/PT fits HVAC sensor hubs that aggregate temperature, humidity, and pressure sensors in commercial buildings. The 12-channel ADC handles multi-zone sensor scanning, and the I2C bus connects to modern digital sensors. USART interfaces pass aggregated telemetry to BACnet or Modbus gateways. Sleep modes between sample bursts extend battery life in wireless sensor nodes. With 51 I/O pins, designers can also integrate local keypad override and LCD readout without additional I/O expanders.
Được đề xuất
Smart Home Edge Controller
For smart-home edge controllers aggregating Zigbee, Z-Wave, or Wi-Fi sensor data, the PIC18F65J11-I/PT acts as the local supervisor. Two USARTs bridge to wireless modules, while SPI drives non-volatile storage for event logs. The 32KB Flash supports OTA bootloader plus minimal application logic, and 2048 bytes RAM handles command queues. nanoWatt Technology sleep mode supports battery-powered wireless sensor stick-down installations. Industrial temperature operation suits unheated garage and attic deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F65J11-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F65J10-I/PT | PIC18F65J11T-I/PT | PIC18F66J11-I/PT | PIC18F67J11-I/PT | PIC18F85J11-I/PT | PIC18F64J11-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm, PT) | TQFP-64 (10x10 mm, PT) | TQFP-64 (10x10 mm, PT) | TQFP-64 (10x10 mm, PT) | TQFP-64 (10x10 mm, PT) | TQFP-80 (PT) - pin-count delta | TQFP-64 (10x10 mm, PT) |
| Flash Program Memory | 32 KB (16K x 16) | 32 KB | 32 KB | 64 KB (+100%) | 128 KB (+300%) | 32 KB | 16 KB (-50%) |
| Data RAM | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes | 2048 bytes |
| Operating Frequency | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| I/O Pins | 51 | 51 | 51 | 51 | 51 | 67 (+31%) | 34 (-33%) |
| ADC | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 16-ch, 10-bit | 12-ch, 10-bit |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Pin Compatibility | Reference (TQFP-64) | Drop-in (TQFP-64) | Identical (TQFP-64) | Drop-in (TQFP-64) | Drop-in (TQFP-64) | Different package (TQFP-80) | Drop-in (TQFP-64) |
Bảo phân biệt quan trọng
- Same TQFP-64 footprint but 2x Flash at 64KB (vsPIC18F66J11-I/PT)
- NanoWatt Technology low-power modes versus prior J10 family (vsPIC18F65J10-I/PT)
- Industrial temperature grade -40C to +85C versus consumer/economic parts (vsPIC18F46K22-I/P)
Ghi chú thiết kế
Decouple VDD and AVDD separately. Place a 100 nF ceramic capacitor as close as practical to each VDD/AVDD pin pair, and add a bulk 10 uF tantalum or aluminum-polymer capacitor on the main 3.3V rail. The PIC18F65J11's ADC accuracy depends on quiet AVDD; sharing AVDD with a noisy digital VDD without LC filtering can degrade ADC readings by 2-3 LSB. Per Microchip app note TB3019, AVSS must connect to a star-ground point that joins the analog ground plane, not a daisy-chained trace.
The TQFP-64 (10x10 mm) package has 0.5 mm pitch leads and benefits from standard JEDEC MS-026 land patterns with 0.25 mm-wide pads. Maintain a continuous ground plane beneath the IC and route signals on inner layers for cleaner EMI. Place the ICSP connector footprint on the board edge for production programming access - Microchip recommends a 6-pin 0.1-inch header with PGC/PGD/MCLR/VDD/VSS/NC pins per Microchip development tool documentation. Use Pb-free SAC305 solder paste and follow the JEDEC J-STD-020 reflow profile for MSL-3 moisture sensitivity.
Always add the MCLR external pull-up (typically 10 kohm to VDD) - leaving MCLR floating can cause spurious resets and unstable startup. The configuration bits must be set correctly before the first Flash write: disable the watchdog unless used, select the oscillator mode, and enable low-voltage programming. Avoid using OSC1 as a digital I/O when the internal RC oscillator is selected, as this can cause phantom clocking. For ADC accuracy, add a 100 nF bypass on the VREF+ pin (if used) and avoid switching heavy digital loads during ADC conversions.
Thông tin tuân thủ
RoHS-compliant Pb-free TQFP-64 package per Microchip product page. NOT AEC-Q100 qualified - choose a PIC18F equivalent with Q100 suffix for automotive. Halogen-free status not explicitly disclosed; treated as unknown.
