PIC17C43T-25/PT - 8KB OTP 8-Bit MCU, 25MHz, 44-TQFP | Microchip
部品番号: PIC17C43T-25/PT ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.8 | $68.00 |
| 100 | $6.1 | $610.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.75 | $4,750.00 |
PIC17C43T-25/PT 概要
An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, RAM, program memory (ROM/EPROM/Flash/OTP), and peripheral I/O. The PIC17C family sits at the top of Microchip's original 8-bit portfolio as a high-performance tier, superseding the PIC16CXX and PIC12CXXX families. The PIC17C43T-25/PT occupies the power-management tier of this hierarchy: microcontroller -> embedded controller -> semiconductor device. Its EPROM-based program memory enables fast prototyping without mask-ROM NRE charges, while OTP restricts each device to one-time field programming via standard EPROM programmers.
Key features include 25 MHz maximum operating frequency, an instruction execution time of 121 ns, 33 I/O pins, a hardware multiplier, multiple timer/counter modules, and capture/compare/PWM peripherals. The 16-bit-wide instruction word (4K x 16 organization) provides higher code density than the 14-bit PIC16CXX architecture. The integrated watchdog timer, brown-out reset, and power-on reset support robust embedded designs. The 44-TQFP package offers gull-wing leads with a 10x10 mm footprint suitable for standard SMT assembly lines.
Typical applications include industrial control systems, consumer electronics, automotive subsystems, motor control, and embedded instrumentation. The wide 4.5V to 6V supply range and 33 I/O lines support direct interfacing to switches, relays, sensors, and small displays without external glue logic. Compared with newer PIC18F and dsPIC33 alternatives, the PIC17C43T-25/PT is positioned for legacy designs requiring maintained pin-compatibility and is recommended for refresh of existing PIC17C43 designs rather than greenfield development.
When designing with the PIC17C43T-25/PT, note that the EPROM windowed variants (JW package) require quartz erasure for reprogramming, while the OTP -25 speed grade supports one-time field programming only. Ensure decoupling: place a 100 nF ceramic capacitor adjacent to each VDD/VSS pair, plus a 10 uF bulk capacitor on the main supply rail. Use a 25 MHz fundamental-mode crystal or ceramic resonator with the on-chip oscillator, and verify the configuration bits match the instruction-cycle timing budget.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers migrating to newer parts should review Microchip's migration guides from PIC17C to PIC18F or dsPIC33 families.
ドロップイン代替品: PIC17C43T-25/PT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC17C43T-25/PT （同一形状・フットプリント） — 相違点: Core Architecture, Package, Program Memory Type, RAM Size, Instruction Cycle Time.
クイック比較ツール — 並列比較する代替部品を選択:
PIC17C43-25/PT
✅ ドロップイン✓ 在庫あり
$6.1 / 個
データシートを見る →PIC17C43-16I/PT
✅ ドロップイン✓ 在庫あり
$5.3 / 個
データシートを見る →PIC17C43-16E/PT
✅ ドロップイン✓ 在庫あり
$8.95 / 個
データシートを見る →PIC17C43-25E/PT
✅ ドロップイン✓ 在庫あり
$10.85 / 個
データシートを見る →PIC17C42A-25/PT
✅ ドロップイン✓ 在庫あり
$5.55 / 個
データシートを見る →PIC17C43T-25/PT 最大定格＆電気的特性
| Core Architecture | PIC 8-bit RISC |
| Family | PIC17C |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 8 KB (4K x 16) |
| RAM Size | 454 bytes |
| 最大クロック周波数 | 25 MHz |
| Maximum Instruction Rate | 8.25 MIPS |
| Instruction Cycle Time | 121 ns |
| Number of Instructions | 58 single-word |
| I/O Pins | 33 |
| データバス幅 | 16-bit instruction / 8-bit data |
| 電源電圧 | 4.5 V to 6.0 V |
| 動作温度 | 0C to +70C (commercial) |
| パッケージ | 44-pin TQFP (10x10 mm) |
| 実装タイプ | Surface Mount (Gull-Wing) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.80 mm |
| AEC-Q100 Qualified | Not AEC-Q100 qualified |
PIC17C43T-25/PT ピン構成
| ピン 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| ピン 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| ピン 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| ピン 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| ピン 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| ピン 6 | RA5/SS — PORTA bit 5 / SPI slave select |
| ピン 7 | OSC1 — Oscillator input / external clock input |
| ピン 8 | OSC2 — Oscillator output |
| ピン 9 | MCLR — Master clear reset (active low) |
| ピン 10 | VSS — Ground |
| ピン 11 | VDD — Positive supply voltage |
| ピン 12 | RB0/INT — PORTB bit 0 / external interrupt |
| ピン 13 | RB1 — PORTB bit 1 |
| ピン 14 | RB2 — PORTB bit 2 |
| ピン 15 | RB3 — PORTB bit 3 |
| ピン 16 | RB4 — PORTB bit 4 |
| ピン 17 | RB5 — PORTB bit 5 |
| ピン 18 | RB6 — PORTB bit 6 / ICP (in-circuit programming clock) |
| ピン 19 | RB7 — PORTB bit 7 / ICP (in-circuit programming data) |
| ピン 20 | VSS — Ground |
| ピン 21 | VDD — Positive supply voltage |
| ピン 22 | RC0 — PORTC bit 0 |
| ピン 23 | RC1 — PORTC bit 1 |
| ピン 24 | RC2 — PORTC bit 2 |
| ピン 25 | RC3 — PORTC bit 3 |
| ピン 26 | RC4 — PORTC bit 4 |
| ピン 27 | RC5 — PORTC bit 5 |
| ピン 28 | RC6 — PORTC bit 6 / TX |
| ピン 29 | RC7 — PORTC bit 7 / RX |
| ピン 30 | RD0 — PORTD bit 0 |
| ピン 31 | RD1 — PORTD bit 1 |
| ピン 32 | RD2 — PORTD bit 2 |
| ピン 33 | RD3 — PORTD bit 3 |
| ピン 34 | RD4 — PORTD bit 4 |
| ピン 35 | RD5 — PORTD bit 5 |
| ピン 36 | RD6 — PORTD bit 6 |
| ピン 37 | RD7 — PORTD bit 7 |
| ピン 38 | VSS — Ground |
| ピン 39 | VDD — Positive supply voltage |
| ピン 40 | RE0 — PORTE bit 0 |
| ピン 41 | RE1 — PORTE bit 1 |
| ピン 42 | RE2 — PORTE bit 2 |
| ピン 43 | VSS — Ground |
| ピン 44 | VDD — Positive supply voltage |
主な用途
PIC17C43T-25/PT の用途: 6 件s: Industrial Control Systems, Consumer Electronics, Automotive Subsystems, Motor Control and PWM, Embedded Instrumentation, Legacy Design Maintenance.
Industrial Control Systems
The PIC17C43T-25/PT is well-suited for industrial control applications where its 33 I/O pins interface directly to relays, switches, and sensors, while its 8.25 MIPS throughput handles PID loops and supervisory logic. The 4.5-6.0 V supply range aligns with 5 V industrial rails common in PLC and motor-drive designs. Compared to PIC16CXX alternatives, the 16-bit instruction word improves code density for complex state machines. The 8 KB OTP supports full-feature control firmware; commercial temperature grade fits factory-floor enclosures.
おすすめ
Consumer Electronics
The PIC17C43T-25/PT powers consumer devices such as appliance controllers, remote-base units, and small appliances where 8 KB of OTP memory holds appliance firmware and 33 I/O lines drive keypads, displays, and indicator LEDs. Its 121 ns instruction cycle delivers responsive user-interface timing, and the 44-TQFP package fits standard SMT production lines. OTP one-time programming enables low-cost per-unit programming for high-volume SKUs. Compared to PIC16F alternatives, it offers higher throughput without the price premium of 16-bit MCUs.
おすすめ
Automotive Subsystems
The PIC17C43T-25/PT is used in non-safety automotive subsystems such as interior lighting controllers, instrument cluster sub-controllers, and HVAC control modules. Its 4.5-6.0 V supply tolerates 12 V battery rails after regulator drop, and the 33 I/O lines drive stepper motors and segment displays. Note that this part is not AEC-Q100 qualified and is therefore limited to non-safety interior applications. For AEC-Q100 designs use the PIC18F family with proper automotive grade suffix.
おすすめ
Motor Control and PWM
The PIC17C43T-25/PT's Capture/Compare/PWM (CCP) peripherals and 8.25 MIPS throughput suit brushed DC motor control, stepper sequencing, and small BLDC commutation. Its 25 MHz clock yields PWM frequencies above 20 kHz, above the audible range, while 33 I/O lines handle direction, enable, brake, and tachometer feedback. The 454-byte RAM buffers sensor data without DMA. For higher-power BLDC designs, the dsPIC33 family adds DSP instructions and dedicated motor-control PWMs.
おすすめ
Embedded Instrumentation
The PIC17C43T-25/PT serves as the controller in embedded instrumentation such as digital panel meters, data loggers, and bench-top test gear. Its 33 I/O drive 7-segment displays and matrix keypads without external logic, and the 8.25 MIPS throughput implements measurement averaging and protocol stacks (RS-232, SPI, I2C). The 454-byte RAM buffers sample sequences; OTP memory protects firmware IP. The 44-TQFP package fits hand-held enclosures with 10x10 mm board footprints.
おすすめ
Legacy Design Maintenance
The PIC17C43T-25/PT is primarily used to maintain legacy products already in field deployment where redesigning around a modern MCU is cost-prohibitive. Its NRND status as of 2026-09-25 means Microchip discourages new designs but continues limited production for maintenance customers. The 44-TQFP footprint and PIC17C instruction set ensure firmware portability across the PIC17C43 family. Stocking inventory remains available through authorized distributors for repair and refurbishment programs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC17C43T-25/PT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC17C43-25/PT | PIC17C43-16I/PT | PIC17C43-25E/PT | PIC17C42A-25/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| Program Memory | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | 4 KB OTP |
| Max Clock Frequency | 25 MHz | 25 MHz | 16 MHz | 25 MHz | 25 MHz |
| RAM Size | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Supply Voltage | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V |
| Temperature Range | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +125C (extended) | 0C to +70C (commercial) |
| Packaging Form | Tape & Reel | Tube | Tube | Tube | Tube |
主な差別化要因
- 16-bit instruction word with high code density （vs PIC16CXX family (14-bit instructions))
- 8.25 MIPS throughput at 25 MHz （vs PIC17C42A (4 KB / 25 MHz))
- Industry-standard 44-TQFP footprint for full PIC17C43 family drop-in compatibility （vs Windowed JW-package PIC17C43 (CERQUAD))
設計ノート
Place a 100 nF ceramic decoupling capacitor adjacent to each VDD/VSS pin pair (pins 11/10, 21/20, 39/38, 44/43) to suppress high-frequency noise. Add a single 10 uF bulk tantalum or ceramic capacitor on the main 5 V rail close to the MCU. The PIC17C43T-25/PT draws approximately 30 mA at 25 MHz with all peripherals active; verify regulator headroom. Brown-out reset is integrated but configurable via configuration bits.
Route the crystal/oscillator traces (OSC1 pin 7, OSC2 pin 8) on the top layer with short, symmetric traces and a grounded guard ring to minimize EMI pickup. Place the load capacitors (typically 15-33 pF) within 5 mm of the OSC pins. Keep high-speed switching signals (PWM, oscillator) away from analog inputs on PORTA. Use a continuous ground plane beneath the TQFP pad row to reduce ground bounce.
OTP memory means the PIC17C43T-25/PT can be programmed only once - any programming error wastes the device. Always verify code in a windowed JW-package variant during development before committing to OTP production units. Configuration bits (oscillator, watchdog, brown-out, code protection) must be set explicitly; default unprogrammed values may not match your application. The MCLR pin (pin 9) requires a 10 kohm pull-up to VDD for proper reset.
Estimated: at 25 MHz, 5 V supply, and all 33 I/O toggling at full speed, the PIC17C43T-25/PT dissipates approximately 150 mW. The 44-TQFP package has theta_JA around 50 C/W (estimated from typical TQFP-44 thermal data), producing a 7.5 C junction temperature rise above ambient at room temperature - well within the 0C to +70C commercial range. No external heatsink required.
コンプライアンス情報
PIC17C43T-25/PT predates widespread RoHS adoption; RoHS/REACH status not confirmed in available datasheet excerpts. Lead-free and halogen-free status similarly unspecified. Not AEC-Q100 qualified - choose AEC-Q100 automotive grade parts for safety-relevant automotive designs.