PIC17C43T-33E/PT - 8-bit 33MHz 8KB OTP MCU 44-TQFP | Microchip
部品番号: PIC17C43T-33E/PT ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.05 | $80.50 |
| 100 | $7.15 | $715.00 |
| 500 | $6.45 | $3,225.00 |
| 1,000 | $5.85 | $5,850.00 |
PIC17C43T-33E/PT 概要
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data memory (RAM), and peripherals onto one silicon die. The PIC17C43T belongs to Microchip's PIC® 17C family, a high-performance tier of the broader PIC architecture tree (PIC -> 8-bit MCU -> microcontroller -> embedded IC -> semiconductor). The '17C' lineage was Microchip's most capable 8-bit family before the PIC18 introduction, offering the highest code density and peripheral count in the classic 8-bit portfolio. PIC17C parts use 16-bit-wide instruction words and were typically deployed in motor control, instrumentation, and industrial automation designs where an 8-bit core was preferred for cost and toolchain familiarity.
Key features of the PIC17C43T-33E/PT include the extended industrial temperature grade (E suffix, -40C to +125C), 33 I/O pins for interfacing to peripherals, hardware multiplier for fast arithmetic, multiple 16-bit timer/counters, a USART, and an instruction set of only 58 single-word instructions for fast code development. The 'T' suffix denotes tape-and-reel packaging for high-volume assembly. The OTP memory is one-time-programmable, requiring mask-programmed equivalents (PIC17CR43) for volume production runs after code freeze.
Architecturally, the PIC17C43T uses a RISC-style Harvard architecture with separate program and data buses. Its 33 MHz maximum clock delivers 121 ns instruction cycles, enabling deterministic interrupt response - a hallmark of PIC microcontrollers. The device integrates brown-out detection, a watchdog timer, and in-circuit serial programming (ICSP) support for production-line programming.
Typical applications include industrial motor control, instrumentation and metering, automotive body electronics (non-safety), HVAC controllers, and embedded control subsystems where deterministic real-time response is required. The 33 I/O count supports direct interfacing to keypads, displays, sensors, and power-stage FET drivers.
When designing with the PIC17C43T-33E/PT, note that OTP memory cannot be erased - prototype carefully and plan for PIC17C44 or PIC18F alternatives during code development. The 5V nominal supply and 33 MHz operation require careful PCB layout for EMI control.
This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes for engineers evaluating the PIC17C43T-33E/PT for legacy or new designs.
ドロップイン代替品: PIC17C43T-33E/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-33E/PT （同一形状・フットプリント） — 相違点: Package, Mounting Type, Program Memory Size, Core Architecture, Program Memory Type.
クイック比較ツール — 並列比較する代替部品を選択:
PIC17C43T-25/PT
✅ ドロップイン✓ 在庫あり
$4.75 / 個
データシートを見る →PIC17C43T-25E/PT
✅ ドロップイン✓ 在庫あり
$10.65 / 個
データシートを見る →PIC17C43T-25I/PQ
✅ ドロップイン✓ 在庫あり
$13.5 / 個
データシートを見る →PIC17C43T-16/PT
✅ ドロップイン✓ 在庫あり
$8.7 / 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 →PIC17C43T-33E/PT 最大定格＆電気的特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC® 17C |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 8 KB (4K x 16) |
| RAM Size | 454 x 8 bytes (454 bytes) |
| Maximum Clock Speed | 33 MHz |
| Instruction Execution Time | 121 ns |
| MIPS (Dhrystone) | 8.25 MIPS |
| Number of I/O Pins | 33 |
| Instruction Set Size | 58 instructions (16-bit words) |
| Oscillator Type | External |
| 動作温度範囲 | -40C to +125C (E grade) |
| パッケージ | 44-TQFP (10x10 mm) |
| 実装タイプ | Surface Mount |
| Packaging Form | Tape & Reel (T suffix) |
PIC17C43T-33E/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/CLKIN — Oscillator crystal input / external clock |
| ピン 8 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| ピン 9 | MCLR/VPP — Master clear reset / programming voltage |
| 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/PGD — PORTB bit 6 / ICSP data |
| ピン 19 | RB7/PGC — PORTB bit 7 / ICSP clock |
| 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/TX/CK — PORTC bit 6 / USART TX |
| ピン 29 | RC7/RX/DT — PORTC bit 7 / USART RX |
| ピン 30 | VSS — Ground |
| ピン 31 | VDD — Positive supply voltage |
| ピン 32 | RD0 — PORTD bit 0 |
| ピン 33 | RD1 — PORTD bit 1 |
| ピン 34 | RD2 — PORTD bit 2 |
| ピン 35 | RD3 — PORTD bit 3 |
| ピン 36 | RD4 — PORTD bit 4 |
| ピン 37 | RD5 — PORTD bit 5 |
| ピン 38 | RD6 — PORTD bit 6 |
| ピン 39 | RD7 — PORTD bit 7 |
| ピン 40 | VSS — Ground |
| ピン 41 | VDD — Positive supply voltage |
| ピン 42 | RE0/RD — PORTE bit 0 / parallel port read |
| ピン 43 | RE1/WR — PORTE bit 1 / parallel port write |
| ピン 44 | RE2/CS — PORTE bit 2 / parallel port chip select |
主な用途
PIC17C43T-33E/PT の用途: 6 件s: Industrial Motor Control, HVAC and Building Automation Controllers, Automotive Body Electronics (Legacy), Industrial Instrumentation and Metering, Point-of-Sale Terminals and Printers, Security and Access Control Panels.
Industrial Motor Control
The PIC17C43T-33E/PT fits industrial motor control applications because its 8.25 MIPS throughput and 121 ns deterministic interrupt response allow precise PWM generation and field-oriented control loops on an 8-bit core. The 33 digital I/O pins drive 3-phase gate drivers and read Hall-effect sensors, encoder feedback, and over-current protection signals. The 8KB OTP program memory holds state-machine control code plus communication stacks for CAN or RS-485. Per the PIC17C43 family datasheet, the hardware multiplier accelerates Park/Clarke transforms in BLDC control algorithms. Compared to a PIC16 alternative, the PIC17C43T provides 4x more program memory and 33 vs 13 I/O pins, eliminating the need for external I/O expanders.
おすすめ
HVAC and Building Automation Controllers
The PIC17C43T-33E/PT's extended -40C to +125C temperature grade (E suffix) and 33 MHz performance suit HVAC and building automation controllers that must operate reliably in attics, plenums, or rooftop enclosures with extreme thermal swings. The 8KB OTP memory accommodates zone-control firmware with multiple PID loops for damper and valve actuators, while 33 I/O pins interface to thermostats, humidity sensors, and Modbus or BACnet transceivers. The 58-instruction RISC core simplifies regulatory certification by reducing code complexity. Per Microchip's PIC17C43 reference designs, deterministic interrupt latency enables precise temperature ramp profiling without a real-time OS. The OTP memory is well suited to high-volume HVAC units where code never changes after deployment.
おすすめ
Automotive Body Electronics (Legacy)
The PIC17C43T-33E/PT was widely deployed in automotive body electronics for non-safety functions including seat controllers, mirror adjusters, lighting modules, and instrument cluster subsystems. Its 33 MHz performance and 33 I/O pins handle multiple PWM channels for motor speed control and LED brightness dimming in a single chip. The extended -40C to +125C temperature grade meets automotive under-hood thermal requirements. Per Microchip's PIC17C43 datasheet, the 8KB OTP program memory stores calibration data for trim-level configurations. Note: For new automotive designs, AEC-Q100 qualified PIC18F alternatives are recommended over the obsolete OTP PIC17C43T.
おすすめ
Industrial Instrumentation and Metering
The PIC17C43T-33E/PT serves industrial instrumentation including panel meters, energy monitors, and process controllers where its 8KB OTP memory stores calibration tables and linearization coefficients. The hardware multiplier accelerates RMS calculations for power metering, and 33 I/O pins interface to 7-segment displays, keypads, and 4-20 mA analog front ends via external ADC chips. Per the Microchip PIC17C43 reference design, the 121 ns instruction cycle delivers deterministic ADC sampling at high update rates. The extended temperature grade supports outdoor installations. The OTP memory provides field-update resistance required for revenue-grade metering certifications.
おすすめ
Point-of-Sale Terminals and Printers
The PIC17C43T-33E/PT's 8KB OTP program memory and 33 MHz throughput supported point-of-sale terminals, receipt printers, and barcode scanners before the era of low-cost 32-bit ARM microcontrollers. Its 33 I/O pins drive thermal print heads, stepper motors for paper feed, keypads, and character LCD displays directly without external latches. The 16-bit instruction bus enables compact C code generation for menu and transaction state machines. Per Microchip's PIC17C43 application notes, deterministic response times support real-time USB or RS-232 transaction handling. Although the part is obsolete, it remains in service in legacy retail equipment where firmware migration would require expensive recertification.
おすすめ
Security and Access Control Panels
The PIC17C43T-33E/PT was a workhorse for security and access-control panels handling keypad inputs, RFID reader interfaces, door strike relays, and alarm siren drivers in a single chip. Its 33 I/O pins eliminate the need for I/O expanders in 8-zone alarm systems, and the 8KB OTP memory stores zone configuration, user PINs, and event logs. Per Microchip's PIC17C43 datasheet, the extended -40C to +125C temperature grade supports outdoor control box installations. The OTP memory prevents unauthorized firmware modification, important for security certifications like UL 1023. The USART peripheral interfaces to GSM or PSTN alarm communicators for off-premises signaling.
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-33E/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 | PIC17C43T-25/PT | PIC17C43T-25E/PT | PIC17C43T-25I/PQ | PIC17C43T-16/PT | PIC17C43-25E/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same footprint | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Speed | 33 MHz | 25 MHz (-24%) | 25 MHz (-24%) | 25 MHz (-24%) | 16 MHz (-52%) | 25 MHz (-24%) |
| Program Memory | 8 KB OTP | 8 KB OTP (same) | 8 KB OTP (same) | 8 KB OTP (same) | 8 KB OTP (same) | 8 KB OTP (same) |
| RAM Size | 454 bytes | 454 bytes (same) | 454 bytes (same) | 454 bytes (same) | 454 bytes (same) | 454 bytes (same) |
| Operating Temperature | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) |
| Packaging Form | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Pinout Compatibility | Reference | Pin-to-pin compatible | Pin-to-pin compatible | Pin-to-pin compatible (PQ variant) | Pin-to-pin compatible | Pin-to-pin compatible |
主な差別化要因
- 33 MHz maximum clock speed - 8.25 MIPS deterministic throughput （vs PIC17C43T-25E/PT)
- Extended -40C to +125C industrial temperature grade （vs PIC17C43T-25/PT)
- Highest-performance 8-bit PIC architecture in Microchip's lineup （vs PIC16F877A)
設計ノート
The PIC17C43T-33E/PT operates from a single 5V supply and includes brown-out detection. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 11, 21, 31, 41) and a single bulk capacitor (10 uF tantalum or aluminum) at the board entry point. Estimated: at 33 MHz full operation, core current draw is approximately 30-40 mA - sufficient bulk capacitance prevents voltage droop during peak processing. The PIC17C architecture draws peak current on clock edges, so low-ESR ceramic decoupling is recommended for noise-sensitive designs.
The 44-pin TQFP package has a 0.8 mm pitch and 10x10 mm body - the exposed thermal pad (if present on this package variant) must be soldered to a copper pad for thermal dissipation. Estimated: at full 33 MHz operation with all I/O switching, the device dissipates approximately 500 mW. Keep oscillator traces short (<10 mm) and routed away from high-frequency I/O lines to avoid coupling. Use a 4-layer PCB with continuous ground plane for production-grade EMI performance.
OTP memory cannot be erased - prototype firmware using a PIC17C44 (windowed EPROM) or PIC18F4220 (Flash) emulator before committing production code to PIC17C43T parts. Verified: per Microchip's PIC17C43 product page, the part is obsolete; new designs should use the PIC18F4220 with Flash memory. When upgrading from PIC16 to PIC17C43T, note the 16-bit instruction word length and revised SFR mapping - existing PIC16 assembly code will NOT run on PIC17 without rewriting.
コンプライアンス情報
Part is obsolete per Microchip product page. Compliance details not specified in current distributor data; contact Microchip for environmental compliance documentation. PIC17C43 family was designed before widespread AEC-Q100 adoption in automotive MCUs.