PIC18F24K20-I/SS - 8-bit 64MHz MCU 16KB Flash XLP | Microchip
MPN: PIC18F24K20-I/SS ✓ Hoạt độngPIC18F24K20-I/SS Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile flash memory, RAM, EEPROM, peripherals (ADC, timers, UART, I/O), and a clock source. The PIC18 family uses an enhanced Harvard RISC architecture with 16-bit instructions, C-compiler-optimized instruction set, and optional extended instruction set for re-entrant code. Within the broader semiconductor hierarchy, PIC18 MCUs sit under the umbrella of microcontrollers, then embedded controllers, then integrated circuits. The "K" suffix denotes the K-series that adds 64MHz operation and the nanoWatt XLP power-saving feature set.
Key features of the PIC18F24K20-I/SS include: 16KB flash program memory with linear addressing up to 64K bytes, 768 bytes RAM, 256 bytes data EEPROM, 25 I/O ports, an integrated 10-bit ADC, multiple timers, MSSP (SPI/I2C) and enhanced USART peripherals, and a self-programmable flash architecture that supports bootloader-based field updates. The nanoWatt XLP feature delivers sleep currents in the nanoamp range, making the device well suited to battery-backed applications.
Typical applications include industrial sensor interfaces, low-power remote controls, consumer appliances, USB-to-UART bridges, battery monitoring, automotive body modules, and small home-automation nodes. The 25 available I/O and the SSOP-28 footprint enable compact PCB designs with sufficient headroom for LED drivers, keypads, or sensor clusters. The integrated 10-bit ADC handles thermistor, potentiometer, and low-speed voltage sampling without an external converter.
When designing with this part, plan for at least one decoupling capacitor per power pin, place the ICSP programming header for in-circuit serial programming access, and budget flash endurance at 10K erase/write cycles minimum. The 64MHz operation at 5V provides 16 MIPS throughput, but designers must respect VDD-VPP relationships during flash programming.
Bộ thay thế dễ dàng lắp đặt cho PIC18F24K20-I/SS — 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 PIC18F24K20-I/SS (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Timers, Core.
PIC18F25K20-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F24K20T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F24K20-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F23K20-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F24K22-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F24K20-I/SS Tỷ lệ tối đa & tính chất điện
| Family | PIC18F2XK20/4XK20 |
| Core | 8-bit PIC RISC |
| CPU Clock Speed | 64 MHz |
| MIPS (max) | 16 MIPS |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data RAM | 768 bytes |
| Data EEPROM | 256 bytes |
| I/O Ports | 25 |
| ADC | 10-bit |
| Điện áp cung cấp | 1.8 V to 5.5 V (varies by F/L variant) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
| Trạng thái RoHS | Compliant |
| Low-Power Technology | nanoWalt XLP |
| Peripherals | MSSP (SPI/I2C), Enhanced USART, Timers, PWM, 10-bit ADC |
Cấu hình chân PIC18F24K20-I/SS
| Chân 1 | MCLR — Master Clear (reset) input, programming voltage input |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / USART async transmit / sync clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / USART async receive / sync data |
| Chân 19 | VSS — Ground reference (second VSS) |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/INT0/AN12 — PORTB bit 0 / External interrupt 0 / Analog input 12 |
| Chân 22 | RB1/INT1/AN10 — PORTB bit 1 / External interrupt 1 / Analog input 10 |
| Chân 23 | RB2/INT2/AN8 — PORTB bit 2 / External interrupt 2 / Analog input 8 |
| Chân 24 | RB3/AN9/CCP2 — PORTB bit 3 / Analog input 9 / CCP2 output |
| Chân 25 | RB4/AN11 — PORTB bit 4 / Analog input 11 |
| Chân 26 | RB5/AN13 — PORTB bit 5 / Analog input 13 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC18F24K20-I/SS phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Node, Battery-Powered Remote Control, Consumer Appliance Control Board, USB-to-UART Bridge Dongle, Automotive Body Control Module, Smart Home Sensor Hub.
Industrial Sensor Interface Node
The PIC18F24K20-I/SS fits industrial sensor-interface nodes because its 64 MHz / 16 MIPS core handles Modbus RTU packet processing over the enhanced USART, while the 10-bit ADC reads multiple analog sensors with the internal voltage reference. The nanoWatt XLP sleep mode drops current to nanoamp levels between sensor reads, so a 3.3V coin cell can power a wireless sensor node for years. Twenty-five I/O pins support keypads, status LEDs, and multiple SPI sensors without external logic.
Được đề xuất
Battery-Powered Remote Control
In battery-powered remote controls, the PIC18F24K20-I/SS leverages its nanoWatt XLP technology to enter sleep modes with sub-microamp current draw between user button presses. The 16 KB flash accommodates complex IR/RF protocol stacks (RC5, NEC, custom proprietary), and the MSSP peripheral generates SPI or I2C control signals for companion radios. At 1.8 V minimum supply, the device operates directly from a single alkaline or lithium coin cell, while the industrial -40C to +85C range suits outdoor use.
Được đề xuất
Consumer Appliance Control Board
The PIC18F24K20-I/SS anchors consumer appliance control boards where cost, reliability, and peripheral integration matter. Its 16 KB flash stores appliance state machines and user interface logic, while the enhanced PWM drives triac-controlled AC loads (heaters, valves, motors). The 10-bit ADC samples NTC thermistors for closed-loop temperature control, and the 25 I/O connect directly to LED indicators, keypads, and buzzer drivers without external logic.
Được đề xuất
USB-to-UART Bridge Dongle
For USB-to-UART bridge dongles, the PIC18F24K20-I/SS uses its enhanced USART for asynchronous serial communication and the MSSP peripheral for SPI pass-through to target devices. The 16 KB flash implements USB HID or CDC class stacks, while 768 bytes RAM supports buffer management. The SSOP-28 package fits in compact dongle form factors, and the industrial temperature rating ensures operation across diverse deployment environments.
Được đề xuất
Automotive Body Control Module
The PIC18F24K20-I/SS (or the automotive-grade AEC-Q100 PIC18F24K20-I/SS equivalent) serves in automotive body control modules for window lifters, mirror adjusters, and interior lighting. Its 16 KB flash stores diagnostic routines and CAN-friendly protocol layers, the enhanced PWM drives motor H-bridges, and the 25 I/O accommodate multiple switch inputs and relay drivers. The wide -40C to +85C operating temperature suits under-dash and door-mounted installations.
Được đề xuất
Smart Home Sensor Hub
In smart-home sensor hubs, the PIC18F24K20-I/SS coordinates Z-Wave, Zigbee, or LoRa transceivers through its SPI/I2C MSSP peripheral, while the enhanced USART logs events to a Wi-Fi co-processor. The 16 KB flash supports application logic for occupancy sensing, light-level adaptation, and tamper detection. nanoWatt XLP sleep modes let battery-powered door/window sensors run multi-year deployments, and 25 I/O integrate reed switches, PIR sensors, and indicator LEDs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F24K20-I/SS — 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 | PIC18F25K20-I/SS | PIC18F24K20T-I/SS | PIC18F24K20-E/SS | PIC18F23K20-I/SS | PIC18F24K22-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same |
| Flash Memory | 16 KB | 32 KB (+100%) | 16 KB (same) | 16 KB (same) | 8 KB (-50%) | 16 KB (same) |
| RAM | 768 bytes | 1536 bytes | 768 bytes | 768 bytes | 512 bytes | 768 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| Low-Power Tech | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Bảo phân biệt quan trọng
- Highest flash density within the K20 28-pin SSOP option set (vsPIC18F23K20-I/SS)
- Industrial temperature range standard vs extended-only alternatives (vsPIC18F24K20-E/SS)
- Drop-in same-family upgrade path with double flash available (vsPIC18F25K20-I/SS)
Ghi chú thiết kế
Estimated: at fOSC = 64 MHz, VDD = 5.0 V and all peripherals active, typical IDD is approximately 15 mA per the PIC18F2XK20/4XK20 datasheet 41303E. For battery applications, switch to the LF variant or use the nanoWatt XLP sleep modes to drop quiescent current to the nanoamp range. Always place a 100 nF decoupling capacitor as close as possible to each VDD pin (pin 20) and a bulk 10 uF capacitor on the supply rail to suppress digital switching noise.
Route the ICSP signals (RB6/PGC pin 27 and RB7/PGD pin 28) directly to a 6-pin header placed at the board edge with no series resistors in-line during programming. Use a 10 kohm pull-up on MCLR (pin 1) to VDD; a 100 nF capacitor from MCLR to VSS provides noise immunity. Keep the 28-pin SSOP footprint on a 1.0 mm pitch with 0.65 mm lead width to comply with the JEDEC MS-026 land pattern. Maintain a continuous ground plane under the device to minimize EMI coupling.
Do not exceed the absolute maximum VDD of 7.0 V or current per pin of 25 mA per Microchip datasheet 41303E. Configure unused I/O as outputs driven low rather than inputs to prevent floating-pin current spikes. When using the ADC, ensure the A/D acquisition time exceeds 1.4 us and add a 100 ohm series resistor with a 100 nF capacitor on analog inputs to limit sample-charge injection. Always clear the GIE bit before modifying interrupt-flag registers to avoid race conditions in ISR-driven firmware.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) only; for AEC-Q100 automotive qualification, consult Microchip factory for the dedicated automotive part variant. REACH SVHC compliance confirmed; no declarable substances above 0.1% weight threshold.
