PIC17C43-16I/PT - 8-bit 16MHz 8KB OTP MCU 44-TQFP | Microchip
MPN: PIC17C43-16I/PT ✗ Cuối đờiPIC17C43-16I/PT Tóm tắt
An MCU (microcontroller) is a single-chip computer containing a CPU core, program memory, data memory, and configurable peripherals. The PIC17C family represents Microchip's first-generation high-performance 8-bit architecture, positioned between baseline PIC16 and enhanced PIC18 families, and was eventually succeeded by the PIC18F series for new designs. Microcontrollers sit within the broader taxonomy of: MCU -> microcontroller -> embedded processor -> semiconductor -> integrated circuit.
Key features include only 58 single-word instructions to learn, a 16-level hardware stack, single-cycle execution for most opcodes (program branches and table reads/writes require two cycles), and a maximum clock input of 33 MHz with a 121 ns instruction cycle at 16 MHz. The PIC17C43 includes multiple counter/timer modules, capture/compare/PWM peripherals, a USART, and 33 digital I/O pins organized across five ports, supporting a wide range of embedded control tasks. The -16 speed grade specifies 16 MHz maximum clock input.
Typical applications include industrial automation controllers, motor control subsystems, sensor interface front-ends, and white-goods / appliance control boards. The wide operating voltage tolerance and robust CMOS EPROM cell make the PIC17C43 suitable for noise-prone factory-floor environments where firmware stability matters more than absolute cost.
Designers migrating new projects should consider the PIC18F4220 (flash-based, recommended by Microchip as the modern successor) for new designs; the PIC17C43-16I/PT remains useful for legacy board repair and long-life-cycle industrial programs where OTP and -40C to +85C industrial temperature grading are still desired.
This page synthesizes distributor inventory, package-identical drop-in alternatives, and design notes not consolidated in the Microchip datasheet, giving repair engineers and sourcing teams a single actionable reference.
Bộ thay thế dễ dàng lắp đặt cho PIC17C43-16I/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 PIC17C43-16I/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Type, Operating Temperature, Maximum Clock Frequency, RAM Size.
PIC17C43-16I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-16/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-16I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-33I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C42A-16E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-16I/PT Tỷ lệ tối đa & tính chất điện
| Manufacturer | Microchip Technology |
| Product Family | PIC 17C |
| Core Architecture | 8-bit RISC PIC |
| Instruction Set Width | 16-bit (single word) |
| Number of Instructions | 58 |
| Program Memory Type | EPROM (OTP) |
| Program Memory Size | 8 KB (4K x 16) |
| Maximum Clock Input | 33 MHz |
| Operating Frequency (this part) | 16 MHz |
| Instruction Cycle | 121 ns (single cycle, except branches/table R/W) |
| Performance | 8.25 MIPS |
| Điện áp cung cấp | 5 V nominal |
| I/O Pins | 33 |
| Hardware Stack | 16-level |
| Hộp | 44-TQFP (PT) |
| Kiểu lắp đặt | Surface Mount |
| Temperature Grade | Industrial (-40C to +85C) |
| Lead-Free / RoHS | Refer to Microchip product page |
Cấu hình chân PIC17C43-16I/PT
| Chân 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Chân 5 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| Chân 6 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| Chân 7 | RA6/OSC2 — PORTA bit 6 / crystal oscillator output |
| Chân 8 | RA7/OSC1 — PORTA bit 7 / crystal oscillator input |
| Chân 9 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 10 | RB1 — PORTB bit 1 |
| Chân 11 | RB2 — PORTB bit 2 |
| Chân 12 | RB3 — PORTB bit 3 |
| Chân 13 | RB4 — PORTB bit 4 |
| Chân 14 | RB5 — PORTB bit 5 |
| Chân 15 | RB6 — PORTB bit 6 |
| Chân 16 | RB7 — PORTB bit 7 |
| Chân 17 | RC0 — PORTC bit 0 |
| Chân 18 | RC1 — PORTC bit 1 |
| Chân 19 | RC2 — PORTC bit 2 |
| Chân 20 | RC3 — PORTC bit 3 |
| Chân 21 | RC4 — PORTC bit 4 |
| Chân 22 | RC5 — PORTC bit 5 |
| Chân 23 | RC6 — PORTC bit 6 |
| Chân 24 | RC7 — PORTC bit 7 |
| Chân 25 | RD0 — PORTD bit 0 |
| Chân 26 | RD1 — PORTD bit 1 |
| Chân 27 | RD2 — PORTD bit 2 |
| Chân 28 | RD3 — PORTD bit 3 |
| Chân 29 | RD4 — PORTD bit 4 |
| Chân 30 | RD5 — PORTD bit 5 |
| Chân 31 | RD6 — PORTD bit 6 |
| Chân 32 | RD7 — PORTD bit 7 |
| Chân 33 | RE0 — PORTE bit 0 |
| Chân 34 | RE1 — PORTE bit 1 |
| Chân 35 | RE2 — PORTE bit 2 |
| Chân 36 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 37 | VDD — Positive supply (5V) |
| Chân 38 | VSS — Ground reference |
| Chân 39 | VDD — Positive supply (5V) |
| Chân 40 | VSS — Ground reference |
| Chân 41 | T0CKI — Timer 0 clock input |
| Chân 42 | CCP1 — Capture/Compare/PWM 1 |
| Chân 43 | CCP2 — Capture/Compare/PWM 2 |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C43-16I/PT phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Motor Control Subsystems, White-Goods and Appliance Control, Sensor Interface Front-Ends, Automotive Aftermarket Modules, Legacy Board Repair and Long-Life Production.
Industrial Automation Controllers
The PIC17C43-16I/PT fits PLC and machine controller roles because its 8.25 MIPS throughput and 121 ns deterministic single-cycle execution handle closed-loop control loops within tight scan budgets. Its 8 KB OTP program memory accommodates ladder-logic translation tables and timing schedules, while 33 I/O pins drive relays, sensors, and HMI displays directly without external expanders. The industrial -40C to +85C temperature grade survives factory-floor thermal cycling. In retrofitting legacy equipment, engineers drop the PT package onto existing TQFP-44 PCB pads to extend equipment service life without respinning control boards.
Được đề xuất
Motor Control Subsystems
Brush-DC and stepper motor control firmware fits comfortably in the PIC17C43-16I/PT's 8 KB OTP memory. The integrated capture/compare/PWM modules generate precise switching waveforms, while the 121 ns instruction cycle produces deterministic PWM update rates suitable for trapezoidal commutation and PI speed loops. With 33 digital I/O pins, the MCU directly drives H-bridge gate signals, Hall-sensor inputs, and quadrature encoder feedback. Designers benefit from the OTP security: production firmware cannot be reverse-read from the device after programming, protecting proprietary control algorithms in OEM motor drives.
Được đề xuất
White-Goods and Appliance Control
Washing machines, dishwashers, microwave ovens, and HVAC thermostat controllers were the original application sweet spot for PIC17C43 when it launched. Its 8-bit RISC core, low power consumption, and OTP-coded firmware deliver cost-effective embedded intelligence for cycle timers, sensor fusion, and user-interface button matrices. The 44-pin TQFP package sits cleanly on compact appliance PCBs, and the industrial temperature grade handles the thermal stress of compressor-adjacent placement. For new appliance designs, PIC18F-series flash parts are now preferred, but PIC17C43-16I/PT remains in service boards produced in long-life programs.
Được đề xuất
Sensor Interface Front-Ends
Multi-channel sensor aggregation boards leverage the PIC17C43-16I/PT's 33 I/O pins to scan temperature, pressure, and flow sensors in industrial measurement systems. The MCU's RISC architecture executes averaging and linearization routines within tight sample windows, while the 8 KB OTP stores calibration coefficients unique to each sensor batch. A built-in USART interfaces with upstream PLCs or display modules. The 16 MHz clock rate is sufficient for 10 kHz sampling loops on 4 to 8 sensor channels, and the industrial temperature grade is well-matched to outdoor and process-plant environments.
Được đề xuất
Automotive Aftermarket Modules
Although the PIC17C43 is not automotive-qualified, the -16I/PT industrial temperature grade is acceptable for under-dash aftermarket accessories like alarm modules, gauge drivers, and central-locking controllers. Its OTP program memory secures proprietary rolling-code algorithms, and the 16 MHz clock generates reliable timing for radio-frequency encoder/decoder pairs. The 44-pin TQFP package integrates cleanly into compact modules, and the EPROM cell's long-term data retention (over 10 years per Microchip datasheet) suits long-life automotive aftermarket SKUs. Use PIC17C42A-16E/P for higher-temperature engine-bay applications.
Được đề xuất
Legacy Board Repair and Long-Life Production
Many industrial OEMs continue to ship products with 15 to 20 year service lifecycles, and the PIC17C43-16I/PT remains the only supported MCU on those legacy boards. Repair depots and contract manufacturers stock PIC17C43-16I/PT for warranty replacement and field service. The OTP memory's stability over decades of storage suits low-volume spare-parts channels. When a board fails, swapping a fresh PIC17C43-16I/PT onto the existing TQFP-44 footprint returns the assembly to service without requiring firmware porting to a different MCU family.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C43-16I/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 | PIC17C43-16I/PQ | PIC17C43-16/PQ | PIC17C43-16I/P | PIC17C43-33I/PT | PIC17C42A-16E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | MQFP-44 (PQ) - same footprint family | MQFP-44 (PQ) - same footprint family | PDIP-40 (P) | TQFP-44 (PT) - same | PDIP-40 (P) |
| Max Clock Input | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 16 MHz |
| Program Memory | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | Reduced OTP map |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C |
| Instruction Cycle | 121 ns at 16 MHz | 121 ns at 16 MHz | 121 ns at 16 MHz | 121 ns at 16 MHz | 121 ns at 33 MHz | 121 ns at 16 MHz |
| I/O Pins | 33 | 33 | 33 | 33 (PDIP-40 exposed) | 33 | 33 |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Industrial temperature grade on TQFP-44 (vsPIC17C43-16/PQ)
- Speed upgrade available without layout change (vsPIC17C43-33I/PT)
- Through-hole option for prototyping (vsPIC17C43-16I/P)
Ghi chú thiết kế
PIC17C43-16I/PT operates from a single 5V nominal supply on the VDD pins (37 and 39), with VSS returns on pins 38 and 40. Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the package pin, and add a bulk 10 uF tantalum or aluminum polymer capacitor near the regulator output. For noisy industrial environments, place a ferrite bead in series with VDD to suppress motor-drive transients coupling into the MCU supply rail.
Lay out the TQFP-44 land pattern to JEDEC MS-026 variation ABD with 0.8 mm pitch and 0.45 mm lead width. Provide continuous ground planes under the MCU and keep traces on ports A through E short to minimize capacitive loading, especially on oscillator pins RA6/OSC2 and RA7/OSC1. Route the MCLR/VPP pin (36) directly to a dedicated reset supervisor or pull-up resistor; never leave it floating, as spurious resets will result.
OTP program memory cannot be erased or rewritten once programmed - prototype all firmware on the windowed ceramic PIC17C43/JW variant before committing to production PIC17C43-16I/PT units. The 'I' suffix denotes industrial temperature range (-40C to +85C); do not substitute a PIC17C43-16/PT (commercial 0C to +70C) into products deployed outside climate-controlled environments, or the EPROM data retention may be compromised at temperature extremes per the Microchip datasheet.
Thông tin tuân thủ
Compliance values not explicitly listed in verified distributor data; refer to Microchip PIC17C43 product page for current RoHS/REACH declarations. Part is not AEC-Q100 qualified.