PIC17C43-25I/P - 8-Bit 25MHz OTP MCU, 8KB, 40-PDIP | Microchip
부품 번호: PIC17C43-25I/P ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.92 | $89.20 |
| 100 | $7.55 | $755.00 |
| 500 | $6.4 | $3,200.00 |
| 1,000 | $5.85 | $5,850.00 |
PIC17C43-25I/P 개요
What is a PIC microcontroller? A PIC (Peripheral Interface Controller) microcontroller is a RISC-based, Harvard-architecture 8/16/32-bit single-chip computer integrating CPU, program memory (ROM/EPROM/Flash/OTP), data RAM, EEPROM, timers, ADC/DAC, and communication peripherals on one IC. PIC17C specifically sits at the top of the original 8-bit PIC hierarchy (PIC16 -> PIC17 -> PIC18) as Microchip's first 8-bit family with a 16-bit-wide instruction word, expanded register set, hardware multiplier, and DC-40MHz operation. PIC17C43-25I/P belongs to this family as the 25MHz industrial-grade (I-suffix) -40C to +85C variant.
Key features include 8.25 MIPS sustained performance (only 58 single-word instructions), 16-level hardware stack, 8 x 8 hardware multiplier (single-cycle), 33 digital I/O pins, three timer/counter modules, dual analog comparators, and a USART with 9-bit address detect. The 10-bit ADC supports up to 12 input channels, and the PWM module provides configurable duty/frequency control suitable for motor and lighting control. OTP memory allows one-time field programming, suiting low-to-mid volume production.
The device uses a 2.5V to 6.0V single-supply operating range, consumes <5mA active at 25MHz @ 5V, and includes power-saving SLEEP mode with <1uA typical standby current. The PIC17C architecture offers RISC-like deterministic execution and is upwards compatible with PIC16C5X/PIC16CXX code, easing code migration. The wide instruction word and register-rich core outperform PIC16C while remaining 8-bit-compatible at the C source level for many peripherals.
Typical applications include industrial control, motor control (PWM + ADC feedback loop), instrumentation front-ends, automotive body/comfort ECUs (pre-CAN generations), embedded control of sensors and actuators, and legacy 5V-system replacements. Designers select PIC17C43-25I/P when they need >5 MIPS throughput, >2KB program memory, and a through-hole PDIP for prototyping or harsh-environment hand-soldered production.
When designing with this device, ensure the OTP window is shielded from UV light (no windowed part), use a stable 25MHz crystal with the on-chip oscillator and appropriate load capacitors, and provide clean +5V decoupling within 2cm of VDD pins. The PIC17C43-25I/P is suitable for industrial temperature environments (-40C to +85C); for extended -40C to +125C automotive duty, evaluate PIC18F alternatives recommended by Microchip.
This page synthesizes distributor pricing, parametric drop-in PIC17C alternatives, and practical PIC17C43 design notes not consolidated in the manufacturer datasheet alone.
드롭인 대체품: PIC17C43-25I/P — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC17C43-25I/P (동일 폼 팩터 및 풋프린트) — 차이점: Program Memory Size, Package, Program Memory Type, RAM Size, Operating Temperature.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC17C43-25/P
✅ 드롭인✓ 재고 있음
$5.02 / 개
데이터시트 보기 →PIC17C44-25I/P
✅ 드롭인✓ 재고 있음
$10.3 / 개
데이터시트 보기 →PIC17C44-25/P
✅ 드롭인✓ 재고 있음
$10.79 / 개
데이터시트 보기 →PIC17C42A-25I/P
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC17C42AT-25I/P
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC17C43-25I/P 최대 정격 & 전기적 특성
| Manufacturer | Microchip Technology |
| Series / Family | PIC 17C |
| Core Architecture | 8-bit RISC (PIC Harvard) |
| Core Size | 8-bit |
| Max CPU Speed | 25 MHz |
| Instruction Throughput | 8.25 MIPS (121 ns/instruction) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 8 KB (4K x 16 words) |
| RAM Size | 454 bytes (454 x 8) |
| I/O Pins | 33 |
| Supply Voltage (Vdd) | 2.5 V to 6.0 V |
| 동작 온도 | -40 C to +85 C (Industrial, I-suffix) |
| 패키지 / 케이스 | 40-PDIP (0.600 inch, 15.24 mm) |
| 실장 유형 | Through-Hole |
| A/D Converter | 10-bit, up to 12 channels |
| PWM Channels | Yes (configurable) |
| Timers | 3 x Timer/Counter modules |
| Communication | USART (with 9-bit addr detect) |
| Special Features | POR, BOR, WDT, hardware 8x8 multiplier, 16-level hardware stack |
| Oscillator Type | External crystal/RC; on-chip oscillator |
PIC17C43-25I/P 핀 구성
| 핀 1 | /MCLR/VPP — Master Clear (active-low reset) / programming voltage input |
| 핀 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 핀 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 핀 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| 핀 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / external ADC reference |
| 핀 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 핀 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| 핀 8 | RB0/INT — PORTB bit 0 / external interrupt |
| 핀 9 | RB1 — PORTB bit 1 |
| 핀 10 | RB2 — PORTB bit 2 |
| 핀 11 | VSS — Ground reference |
| 핀 12 | VDD — Positive supply (2.5V-6.0V) |
| 핀 13 | OSC1/CLKIN — Crystal oscillator input / external clock |
| 핀 14 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| 핀 15 | RC0 — PORTC bit 0 |
| 핀 16 | RC1 — PORTC bit 1 |
| 핀 17 | RC2 — PORTC bit 2 |
| 핀 18 | RC3 — PORTC bit 3 |
| 핀 19 | RD0 — PORTD bit 0 |
| 핀 20 | RD1 — PORTD bit 1 |
| 핀 21 | RD2 — PORTD bit 2 |
| 핀 22 | RD3 — PORTD bit 3 |
| 핀 23 | RC4 — PORTC bit 4 |
| 핀 24 | RC5 — PORTC bit 5 |
| 핀 25 | RC6 — PORTC bit 6 |
| 핀 26 | RC7 — PORTC bit 7 |
| 핀 27 | RD4 — PORTD bit 4 |
| 핀 28 | RD5 — PORTD bit 5 |
| 핀 29 | RD6 — PORTD bit 6 |
| 핀 30 | RD7 — PORTD bit 7 |
| 핀 31 | VDD — Positive supply (2.5V-6.0V) |
| 핀 32 | VSS — Ground reference |
| 핀 33 | RB3 — PORTB bit 3 |
| 핀 34 | RB4 — PORTB bit 4 |
| 핀 35 | RB5 — PORTB bit 5 |
| 핀 36 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 핀 37 | RB7/PGD — PORTB bit 7 / ICSP data |
| 핀 38 | RA6 — PORTA bit 6 |
| 핀 39 | RA7 — PORTA bit 7 |
| 핀 40 | RE0 — PORTE bit 0 |
일반적인 애플리케이션
PIC17C43-25I/P 적합 용도: 6 애플리케이션s: Industrial Motor Control (BLDC/PWM), Embedded Instrumentation Front-End, Automotive Body/Comfort ECU (Legacy 5V Systems), Smart Sensor Hub / IoT Edge Node, LED Display / Lighting Controller, Educational / Development Platform.
Industrial Motor Control (BLDC/PWM)
The PIC17C43-25I/P suits 5V industrial motor control where the 25MHz core (8.25 MIPS) and on-chip PWM module generate commutation timing for brushed DC or low-speed BLDC motors. With a 10-bit ADC sampling current-sense and back-EMF inputs at up to ~50 kS/s aggregate, the MCU handles single-shunt FOC lite or trapezoidal commutation in real time. The 33 I/O pins drive H-bridge gate drivers, encoder inputs, and fault lines. The -40C to +85C industrial temperature grade matches factory-floor environments. Place a 10uF/100nF decoupling pair within 2 cm of VDD, and route the analog AGND separately from digital ground to preserve ADC SNR when measuring shunt current.
추천
Embedded Instrumentation Front-End
For portable measurement instruments the PIC17C43-25I/P serves as the data-acquisition controller, scanning up to 12 analog channels through its 10-bit ADC and presenting results over USART to a host PC or display. The 454-byte RAM buffers roughly 227 ADC samples at 10 bits each, sufficient for small FFT sub-bands. The 8KB OTP fits calibration tables, look-up-driven linearization for thermocouples, and a USB-CDC / RS-232 command set. Industrial temperature grade handles lab-to-field transitions. Use 100nF decoupling on every AVdd/AVss pair and add a 10uF bulk cap; an external ADC reference (e.g., MCP1541) is recommended for measurements requiring <1% absolute accuracy.
추천
Automotive Body/Comfort ECU (Legacy 5V Systems)
Pre-CAN automotive body modules (window lifters, seat controllers, mirror adjusters) often run on 5V rails with PIC17C43-25I/P class MCUs. The 25MHz core executes multiplexed LIN or PWM seat-position control loops, while the 33 I/O scan switch inputs and drive relay/motor outputs. Industrial -40C to +85C range covers cabin environments though under-hood applications need PIC18F or dsPIC33 upgrades. Brown-Out Reset and Watchdog Timer support ASIL-QM style functional safety. Add TVS diodes on I/O lines, use automotive-grade bypass capacitors (X7R 100nF/10uF), and follow Microchip AN731 (Automotive ESD/Latchup design) for production harnesses.
추천
Smart Sensor Hub / IoT Edge Node
The PIC17C43-25I/P operates as a wired sensor-hub for industrial IoT nodes: it polls I2C/SPI sensors, runs local averaging, and reports results via USART/RS-485 to a gateway. The 25MHz core handles <10 sensor inputs at 100Hz aggregate with comfortable headroom. The 8KB OTP accommodates TinyOS-style protocols or Modbus RTU firmware. With 33 I/O, the MCU drives status LEDs, button inputs, and a local display. The 2.5-6.0V range lets the device run on 3.3V regulated rails from PoE or 5V USB. Sleep current <1uA extends battery life in remote nodes; pair with an external RTC (e.g., MCP79410) for time-stamped telemetry.
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LED Display / Lighting Controller
Driving addressable LED arrays and DMX-controlled lighting fixtures benefits from the PIC17C43-25I/P's 25MHz throughput and PWM module. The MCU generates multi-channel PWM at 8-bit resolution, dims strings via software dithering, and decodes DMX-512 over a USART at 250 kbps. The 33 I/O easily drive 8-16 LED channels directly through MOSFET low-side switches. The 8KB OTP accommodates 16-bit gamma correction tables and macro sequences for chase patterns. Industrial temperature range supports outdoor fixtures. Decouple VDD locally with 100nF ceramic and bulk 10uF; add ferrite beads on PWM output traces to suppress switching noise coupling into adjacent analog channels.
추천
Educational / Development Platform
Through-hole 40-PDIP PIC17C43-25I/P is well suited to university and hobbyist embedded-systems courses because the DIP package is breadboard-friendly and socketable. The 25MHz core provides a RISC teaching example with only 58 instructions and a Harvard architecture, ideal for assembly and C instruction. 33 I/O, 10-bit ADC, USART, PWM, and timers cover full peripheral curriculum in one part. The OTP memory teaches single-shot programming workflows (vs Flash erase/retry). The industrial -40C to +85C range lets lab hardware survive accidental thermal events. Use a PICKit-3 or ICD-3 programmer header with standard Microchip pin assignments for ICSP without firmware removal.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC17C43-25I/P — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC17C43-25/P | PIC17C44-25I/P | PIC17C44-25/P | PIC17C42A-25I/P |
|---|---|---|---|---|---|
| Package | 40-PDIP (0.600") | 40-PDIP (0.600") - same | 40-PDIP (0.600") - same | 40-PDIP (0.600") - same | 40-PDIP (0.600") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Family | PIC 8-bit (PIC17C) | PIC 8-bit (PIC17C) - same | PIC 8-bit (PIC17C) - same | PIC 8-bit (PIC17C) - same | PIC 8-bit (PIC17C) - same |
| Max CPU Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Program Memory | 8 KB OTP | 8 KB OTP | 16 KB OTP (+100%) | 16 KB OTP (+100%) | 4 KB OTP (-50%) |
| RAM | 454 B | 454 B | 454 B | 454 B | 454 B |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
주요 차별점
- Industrial temperature grade (-40C to +85C) in legacy-compatible footprint (vs PIC17C43-25/P)
- 8KB OTP vs PIC17C42A family 4KB (-50%) (vs PIC17C42A-25I/P)
- 8KB OTP vs PIC17C44 family 16KB (lower cost for smaller code) (vs PIC17C44-25I/P)
- Through-hole 40-PDIP for prototyping and harsh environments (vs PIC18F4220)
설계 노트
Decouple both VDD pins (12, 31) with 100nF X7R ceramic placed within 2cm of each pin plus a 10uF bulk aluminum or tantalum near the package. The PIC17C43-25I/P can draw up to 5mA active at 25MHz @ 5V; verify the regulator can supply peak transient currents. Add a series ferrite bead on analog AVDD if separation exists. The /MCLR pin must rise to VDD through a 10k pull-up with a 100nF cap to VSS to ensure clean POR ramp.
Route the 25MHz crystal traces (OSC1/OSC2, pins 13-14) with short symmetric traces, guard them with a ground pour, and keep them away from high-current switching lines. Place the crystal within 1cm of the MCU and use a ground flooded top layer under the crystal can to act as a faraday shield. The ICSP pins (RB6/RB7, pins 36-37) need accessible test pads for in-circuit programming without desoldering. Reserve a 6-pin ICSP header footprint even if not stuffed.
OTP memory can be programmed only once; verify firmware with a windowed PIC17C43-JW prototype before committing to OTP. Brown-Out Reset (BOR) voltage defaults are not always enabled out of reset - explicitly configure the BOREN bit in the configuration word to avoid undefined behavior during brownout. The 10-bit ADC requires a minimum acquisition time; exceeding clock rate settings degrades sample accuracy. For industrial -40C to +85C operation, validate oscillator start-up at cold temperature, as crystals below -20C may need negative-PPM trimming.
At 25MHz and 5V the PIC17C43-25I/P dissipates roughly 25mW internally, well below the 40-PDIP theta-JA of ~50C/W. No heatsinking is required. However, if the device is placed near a power component (>2W dissipation within 2cm), provide thermal isolation (cutout in PCB copper pour) to keep junction temperature within the -40C to +85C operating range. The 40-PDIP package benefits from 1 oz copper on both layers with thermal vias under the lead frame.
규정 준수 정보
RoHS/lead-free status not explicitly confirmed for PIC17C43-25I/P in the verified data; Microchip legacy industrial-grade OTP parts were offered in both leaded and lead-free finishes. AEC-Q100 not qualified (industrial temp grade only, no automotive qualification). Designers should request current compliance documentation from Microchip before production.
