PIC18F44J10T-I/PT - 40MHz 8-bit MCU 16KB Flash 44-TQFP | Microchip
MPN: PIC18F44J10T-I/PT ✓ Hoạt độngPIC18F44J10T-I/PT Tóm tắt
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 peripherals such as timers, ADC, communication controllers, and GPIO into one IC. Microcontrollers sit inside the broader semiconductor hierarchy of integrated circuits and form the lowest-level compute node in embedded systems, above which sit microprocessors, SoCs, and full computers. The PIC18 family in particular is a Harvard-architecture, RISC-based 8-bit line widely used in cost-sensitive consumer, industrial, and automotive body applications.
The PIC18F44J10T-I/PT integrates 16 KB of self-programmable Flash program memory (8K x 16 words), 1024 bytes of SRAM data memory, and up to 36 digital I/O pins. Its peripherals include a 10-bit ADC with multiple channels, an enhanced USART with LIN master/slave support, two MSSP modules capable of SPI and I2C (with address masking for multi-slave I2C buses), multiple timer modules, and nanoWatt Technology power management for low-power sleep modes. The core runs from a 2.0-3.6V wide operating range when the on-chip 2.5V/3.3V regulator is enabled, with an industrial -40C to +85C temperature window.
Architecturally, the device combines an 8-bit datapath with a 16-bit instruction word and an 8-level hardware stack, plus the standard PIC18 interrupt model. The JTAG-friendly ICSP/ICD interface allows in-circuit programming and debug via the MPLAB Snap, PICkit, or MPLAB ICD tools. The wide-port 44-pin TQFP offers ample GPIO for human-interface, sensor, and display designs.
Typical applications include industrial sensing and control nodes, home appliances and white goods, low-cost consumer devices with character or graphical LCDs, automotive body electronics and LIN slaves, USB-to-serial bridges when paired with an external transceiver, and remote sensor / battery-powered data loggers that benefit from nanoWatt Technology.
A key design consideration is selecting the right oscillator mode (HS, XT, or internal 31 kHz/8 MHz RC) early in the schematic phase, because switching modes after board layout typically requires re-tuning the oscillator loading capacitor values and clock-pll configuration bits. The MCU's regulator mode also requires a decoupling network on the ENVREG/VDDCORE pins.
This page synthesizes distributor pricing, drop-in PIC18 alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving procurement and embedded engineers a single source for evaluating PIC18F44J10T-I/PT designs.
Bộ thay thế dễ dàng lắp đặt cho PIC18F44J10T-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 PIC18F44J10T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, Supply Voltage, Timers.
PIC18F44J10-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F45J10-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46J11-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F43K22-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F4423-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F4420-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F44J10T-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC18J |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB (8K x 16 words) |
| Data RAM | 1024 bytes |
| Maximum CPU Frequency | 40 MHz |
| MIPS (Dhrystone 2.1) | 16 MIPS |
| Điện áp cung cấp | 4.2 V to 5.5 V (5V mode) |
| Operating Voltage (regulator mode) | 2.0 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 10-bit, multi-channel |
| Communication | 1x Enhanced USART (LIN), 2x MSSP (SPI / I2C with address masking) |
| Timers | Multiple 8/16-bit timers (TMR0/1/2/3) |
| Power-Saving Modes | nanoWatt Technology (Sleep, Idle, etc.) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 44-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Debug / Programming | ICSP / ICD via MPLAB Snap, PICkit, ICD |
Cấu hình chân PIC18F44J10T-I/PT
| Chân 1 | MCLR/RE3 — Master Clear (Reset) input or digital I/O RE3 |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input AN2 / negative voltage reference |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input AN3 / positive voltage reference |
| Chân 6 | RA4 — PORTA bit 4 |
| Chân 7 | RA5/AN5 — PORTA bit 5 / analog input AN5 |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKI/RA7 — Oscillator input / external clock input / PORTA bit 7 |
| Chân 10 | OSC2/CLKO/RA6 — Oscillator output / clock output / PORTA bit 6 |
| Chân 11 | RC0/SOSCO — PORTC bit 0 / secondary oscillator output |
| Chân 12 | RC1/SOSCI — PORTC bit 1 / secondary oscillator input |
| Chân 13 | RC2 — PORTC bit 2 |
| Chân 14 | RC3/SCL — PORTC bit 3 / I2C clock (MSSP) |
| Chân 15 | RC4/SDA — PORTC bit 4 / I2C data (MSSP) |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI data out (MSSP) |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / Enhanced USART TX / clock line |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / Enhanced USART RX / data line |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RB0/AN12 — PORTB bit 0 / analog input AN12 |
| Chân 22 | RB1/AN10 — PORTB bit 1 / analog input AN10 |
| Chân 23 | RB2/AN8 — PORTB bit 2 / analog input AN8 |
| Chân 24 | RB3/AN9 — PORTB bit 3 / analog input AN9 |
| Chân 25 | RB4 — PORTB bit 4 |
| Chân 26 | RB5 — PORTB bit 5 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Positive supply |
| Chân 31 | RD0 — PORTD bit 0 |
| Chân 32 | RD1 — PORTD bit 1 |
| Chân 33 | RD2 — PORTD bit 2 |
| Chân 34 | RD3 — PORTD bit 3 |
| Chân 35 | RD4 — PORTD bit 4 |
| Chân 36 | RD5 — PORTD bit 5 |
| Chân 37 | RD6 — PORTD bit 6 |
| Chân 38 | RD7 — PORTD bit 7 |
| Chân 39 | VSS — Ground reference |
| Chân 40 | VDD — Positive supply |
| Chân 41 | RE0 — PORTE bit 0 |
| Chân 42 | RE1 — PORTE bit 1 |
| Chân 43 | RE2 — PORTE bit 2 |
| Chân 44 | AVSS — Analog ground reference |
Ứng dụng tiêu biểu
PIC18F44J10T-I/PT phù hợp cho 6 Áp dụngs: Industrial Sensing and Control Nodes, Home Appliance and White-Goods Controllers, Automotive Body Electronics and LIN Slaves, Low-Cost Consumer Devices with Character LCDs, Battery-Powered Data Loggers and Sensor Hubs, USB-to-Serial Bridge and Protocol Converter.
Industrial Sensing and Control Nodes
The PIC18F44J10T-I/PT fits industrial sensor and control nodes thanks to its 16 MIPS performance at 40 MHz and 36 GPIOs that can be remapped to digital I/O, ADC inputs, or communication peripherals. The 10-bit ADC with multi-channel input supports 4-20 mA sensor signal chains after a small external op-amp front end. Combined with the LIN-capable enhanced USART, the part can serve as a network-attached PLC edge node that aggregates analog measurements from multiple field sensors and reports over an industrial RS-485 or LIN bus. The industrial -40C to +85C operating range and 5V-tolerant I/O simplify integration with legacy 5V industrial signaling.
Được đề xuất
Home Appliance and White-Goods Controllers
Home appliances such as washing machines, dishwashers, induction cooktops, and microwave ovens benefit from the PIC18F44J10T-I/PT's combination of 36 GPIOs, two MSSP peripherals (for SPI displays and I2C sensor hubs), and nanoWatt low-power modes. The PWM-capable timers can drive triac-based heater controls, motor bridges, or LED indicators without an external PWM controller. The 5V regulator mode simplifies the analog front end for membrane keypads and seven-segment LED displays, while the 16 KB Flash leaves headroom for user-interface state machines and safety logic typical of consumer white goods.
Được đề xuất
Automotive Body Electronics and LIN Slaves
The PIC18F44J10T-I/PT's enhanced USART with LIN 1.3/2.0 master/slave capability makes it a strong fit for automotive body-domain slaves such as door modules, mirror controllers, seat-position nodes, and ambient lighting controllers. The 2.5V/3.3V regulator mode keeps the MCU on a regulated rail alongside a LIN transceiver such as the MCP2003/MCP2025, while the 16 KB Flash accommodates LIN slave communication stacks plus application logic. The industrial temperature window is sufficient for cabin applications; for under-hood designs a Q-grade PIC18 derivative should be selected instead.
Được đề xuất
Low-Cost Consumer Devices with Character LCDs
Consumer devices such as remote controls, smart thermostats, point-of-sale terminals, and small appliances frequently use HD44780-compatible character LCDs that can be driven directly by the PIC18F44J10T-I/PT in 4-bit mode over its MSSP or by bit-banged GPIO. The 16 KB Flash holds the LCD menu library, button-debounce state machine, and communication stack, while 1024 bytes of SRAM is enough for menu buffers. nanoWatt sleep currents below 1 uA in deep sleep help meet battery-life targets in remote controls and portable accessories.
Được đề xuất
Battery-Powered Data Loggers and Sensor Hubs
The PIC18F44J10T-I/PT's nanoWatt Technology power management and 1 KB SRAM make it a practical controller for low-duty-cycle data loggers such as cold-chain temperature recorders, energy-meter pulse counters, and remote weather stations. The MCU can wake from sleep on a timer interrupt, take an ADC reading from a sensor via the MSSP/I2C bus, store the result in an external EEPROM, and return to sleep, achieving average currents in the tens of microamps. The 5V-tolerant I/O accepts signals from a small solar panel or battery charger circuit directly, simplifying the analog front end.
Được đề xuất
USB-to-Serial Bridge and Protocol Converter
While the PIC18F44J10T-I/PT does not integrate a USB peripheral, it can be combined with an external USB-to-UART bridge such as the MCP2200 or MCP2221A to form a low-cost RS-232/RS-485-to-USB converter or a Modbus gateway. The enhanced USART handles the RS-side framing while the MSSP modules expose I2C/SPI to a host PC. This is a common architecture for industrial-configuration tools, sensor-evaluator boards, and field-service dongles where the bridge IC handles enumeration and the PIC18 does the protocol translation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F44J10T-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 | PIC18F44J10-I/PT | PIC18F45J10-I/PT | PIC18F46J11-I/PT | PIC18F43K22-I/PT |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB | 32 KB | 64 KB | 8 KB |
| Data RAM | 1024 B | 1024 B | 1024 B | 3894 B | 512 B |
| Maximum Frequency | 40 MHz | 40 MHz | 40 MHz | 48 MHz | 64 MHz |
| Operating Voltage | 2.0-3.6 V (reg) / 4.2-5.5 V | Same | Same | Same | 2.3-5.5 V |
| I/O Pins | 36 | 36 | 36 | 34 | 36 |
| LIN Support | Yes (Enhanced USART) | Yes | Yes | Yes | Yes |
| I/O Temp Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (E) |
Bảo phân biệt quan trọng
- LIN 1.3/2.0 capability on the enhanced USART (vsPIC18F4420-I/PT)
- nanoWatt Technology power management (vsPIC18F4423-I/PT)
- Internal 2.5V/3.3V regulator with wide 2.0-3.6V supply window (vsPIC18F4550-I/P)
Ghi chú thiết kế
The PIC18F44J10T-I/PT has two supply topologies: 5V mode (4.2V to 5.5V on VDD, regulator disabled) and regulator mode (2.0V to 3.6V on VDD, internal regulator powers the core from VDDCORE). Decouple VDD with 100 nF + 10 uF bulk ceramic as close to the pins as possible, and add a 1 uF + 100 nF pair on VDDCORE/ENVREG when using regulator mode. Brown-out-reset (BOR) configuration bits must match the chosen supply window or the MCU can latch in reset.
The 44-pin TQFP (10x10 mm) has 0.8 mm pitch pads. Use a 4-layer PCB with a continuous ground plane directly under the MCU to provide low-impedance return for the high-frequency digital edges on the MSSP and USART lines. Place the decoupling capacitors on the same side as the IC, between the supply pin and the nearest VSS pin, and route the ICSP PGC/PGD pair (RB6/RB7) away from analog traces such as the ADC reference to minimize digital-noise coupling.
Estimated: programming the configuration bits (CONFIG1L..CONFIG1H, CONFIG2L..CONFIG2H) is the most common source of 'dead' PIC18F44J10 boards. Verify the oscillator mode (HS vs INTOSC vs EC), watchdog enable, low-voltage-programming enable, and regulator mode (ENVREG) bits before applying power. If MCLR is held low or configured as a digital input without a pull-up, the part will remain in reset. Always include a 10 kohm pull-up on MCLR and a 100 nF cap to ground for reliable in-circuit reset behavior.
When driving the LIN bus from the enhanced USART, ensure the TX pin slew rate is limited to match the LIN physical-layer specification by enabling the LIN mode bit (RC6IOM=0 on the part) and adding the recommended external transceiver (e.g. MCP2025). For I2C buses with multiple slaves, the MSSP address-masking feature lets you respond to multiple 7-bit addresses; configure the ADD_MASK register before enabling the SSP peripheral to avoid spurious ACKs during enumeration.
Thông tin tuân thủ
RoHS and lead-free confirmed from distributor listings; AEC-Q100 not qualified (industrial grade -40C to +85C). Halogen-free status not stated in verified web data - marked unknown. Conflict-minerals compliance per Microchip corporate policy.