PIC17C43-25I/P - 8-Bit 25MHz OTP MCU, 8KB, 40-PDIP | Microchip
MPN: PIC17C43-25I/P ✗ اختتامِ زندگیPIC17C43-25I/P جائزہ
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.
کے لیے ڈراپ اِن متبادل PIC17C43-25I/P — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC17C43-25I/P (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Program Memory Size, Package, Program Memory Type, RAM Size, Operating Temperature.
PIC17C43-25/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C44-25I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C44-25/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC17C42A-25I/P
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC17C42AT-25I/P
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC17C43-25I/P زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| 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 |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (Industrial, I-suffix) |
| پیکیج / کیس | 40-PDIP (0.600 inch, 15.24 mm) |
| ماؤنٹنگ ٹائپ | 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 پن کنفیگریشن
| پن 1 | /MCLR/VPP — Master Clear (active-low reset) / programming voltage input |
| پن 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پن 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| پن 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / external ADC reference |
| پن 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| پن 8 | RB0/INT — PORTB bit 0 / external interrupt |
| پن 9 | RB1 — PORTB bit 1 |
| پن 10 | RB2 — PORTB bit 2 |
| پن 11 | VSS — Ground reference |
| پن 12 | VDD — Positive supply (2.5V-6.0V) |
| پن 13 | OSC1/CLKIN — Crystal oscillator input / external clock |
| پن 14 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| پن 15 | RC0 — PORTC bit 0 |
| پن 16 | RC1 — PORTC bit 1 |
| پن 17 | RC2 — PORTC bit 2 |
| پن 18 | RC3 — PORTC bit 3 |
| پن 19 | RD0 — PORTD bit 0 |
| پن 20 | RD1 — PORTD bit 1 |
| پن 21 | RD2 — PORTD bit 2 |
| پن 22 | RD3 — PORTD bit 3 |
| پن 23 | RC4 — PORTC bit 4 |
| پن 24 | RC5 — PORTC bit 5 |
| پن 25 | RC6 — PORTC bit 6 |
| پن 26 | RC7 — PORTC bit 7 |
| پن 27 | RD4 — PORTD bit 4 |
| پن 28 | RD5 — PORTD bit 5 |
| پن 29 | RD6 — PORTD bit 6 |
| پن 30 | RD7 — PORTD bit 7 |
| پن 31 | VDD — Positive supply (2.5V-6.0V) |
| پن 32 | VSS — Ground reference |
| پن 33 | RB3 — PORTB bit 3 |
| پن 34 | RB4 — PORTB bit 4 |
| پن 35 | RB5 — PORTB bit 5 |
| پن 36 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پن 37 | RB7/PGD — PORTB bit 7 / ICSP data |
| پن 38 | RA6 — PORTA bit 6 |
| پن 39 | RA7 — PORTA bit 7 |
| پن 40 | RE0 — PORTE bit 0 |
عام استعمالات
PIC17C43-25I/P کے لیے موزوں ہے 6 ایپلیکیشنs: 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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC17C43-25I/P — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | 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 |
اہم امتیازی خصوصیات
- Industrial temperature grade (-40C to +85C) in legacy-compatible footprint (بمقابلہPIC17C43-25/P)
- 8KB OTP vs PIC17C42A family 4KB (-50%) (بمقابلہPIC17C42A-25I/P)
- 8KB OTP vs PIC17C44 family 16KB (lower cost for smaller code) (بمقابلہPIC17C44-25I/P)
- Through-hole 40-PDIP for prototyping and harsh environments (بمقابلہPIC18F4220)
ڈیزائن نوٹس
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.
تعمیل کی معلومات
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.
