PIC17C43-33/L - 8-bit 33MHz OTP MCU 8KB 44-PLCC | Microchip
MPN: PIC17C43-33/L ✗ Cuối đờiPIC17C43-33/L Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and interrupt logic on one silicon die. The PIC17C family is Microchip's high-end 8-bit architecture, extending the PIC16C baseline with a wider 16-bit instruction word, an 8-level hardware stack, and a peripheral set tuned for instrumentation, motor control, and industrial automation. In the broader taxonomy, the PIC17C43 sits above PIC16C, PIC12C and PIC16F families but below the PIC18 and 16-bit dsPIC families, making it a transitional part for designs that have outgrown the PIC16 instruction budget but still need 8-bit cost efficiency.
Key features include a capture/compare/PWM module, an 8-bit parallel slave port for external bus expansion, two 8-bit timers plus one 16-bit timer/watchdog, USART serial port, and a versatile 12-bit analog interface. Brown-out reset, power-on reset, and a watchdog timer provide robust field reliability. The OTP program memory supports one-time programming via a universal programmer, which is suitable for production runs where firmware is finalized.
Typical applications include industrial process controllers, automotive body and instrument cluster modules, smart sensor front-ends, and legacy embedded platforms designed around the PIC17C instruction set. When selecting this part, verify your firmware programmer supports the PIC17C device family, since the PIC17C instruction set differs from the more common PIC16C/PIC16F families.
Bộ thay thế dễ dàng lắp đặt cho PIC17C43-33/L — 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 PIC17C43-33/L (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Type, Core Architecture, Program Memory Size, Operating Temperature.
PIC17C43-16/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-25E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C44-33/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-16I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C42A-33I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C43-33/L Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC17C |
| Program Memory | 8 KB (4K x 16) OTP |
| RAM | 454 bytes |
| I/O Pins | 33 |
| CPU Speed | 33 MHz |
| Throughput | 8.25 MIPS (121 ns instruction cycle) |
| Architecture | RISC, 58 single-word instructions |
| Hộp | 44-pin PLCC (16.59 x 16.59 mm) |
| Kiểu bộ nhớ | OTP (One-Time Programmable) |
| Timers | Two 8-bit + one 16-bit timer/watchdog |
| Communication | USART |
| Nhiệt độ hoạt động | Commercial (0C to +70C) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC17C43-33/L
| 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/OSC1 — PORTA bit 6 / oscillator input |
| Chân 8 | RA7/OSC2 — PORTA bit 7 / oscillator output |
| Chân 9 | VSS — Ground |
| Chân 10 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 11 | RB1 — PORTB bit 1 |
| Chân 12 | RB2 — PORTB bit 2 |
| Chân 13 | RB3 — PORTB bit 3 |
| Chân 14 | RB4 — PORTB bit 4 |
| Chân 15 | RB5 — PORTB bit 5 |
| Chân 16 | RB6 — PORTB bit 6 |
| Chân 17 | RB7 — PORTB bit 7 |
| Chân 18 | RC0 — PORTC bit 0 |
| Chân 19 | RC1 — PORTC bit 1 |
| Chân 20 | RC2 — PORTC bit 2 |
| Chân 21 | RC3 — PORTC bit 3 |
| Chân 22 | RC4 — PORTC bit 4 |
| Chân 23 | RC5 — PORTC bit 5 |
| Chân 24 | RC6 — PORTC bit 6 |
| Chân 25 | RC7 — PORTC bit 7 |
| Chân 26 | RD0 — PORTD bit 0 |
| Chân 27 | RD1 — PORTD bit 1 |
| Chân 28 | RD2 — PORTD bit 2 |
| Chân 29 | RD3 — PORTD bit 3 |
| Chân 30 | RD4 — PORTD bit 4 |
| Chân 31 | RD5 — PORTD bit 5 |
| Chân 32 | RD6 — PORTD bit 6 |
| Chân 33 | RD7 — PORTD bit 7 |
| Chân 34 | RE0 — PORTE bit 0 |
| Chân 35 | RE1 — PORTE bit 1 |
| Chân 36 | RE2 — PORTE bit 2 |
| Chân 37 | MCLR/VPP — Master clear / programming voltage |
| Chân 38 | TOCKI — Timer 0 clock input |
| Chân 39 | VDD — Positive supply voltage |
| Chân 40 | VSS — Ground |
| Chân 41 | TX/CK — USART transmit / clock |
| Chân 42 | RX/DT — USART receive / data |
| Chân 43 | PWM/CCP — PWM output / capture compare |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C43-33/L phù hợp cho 7 Áp dụngs: Industrial Process Controller, Automotive Instrument Cluster, Smart Sensor Front-End, Motor Control and PWM Drive, Legacy Embedded Control Platforms, Educational and Development Boards, Communication Protocol Bridges.
Industrial Process Controller
The PIC17C43-33/L's 33 MHz throughput (8.25 MIPS) and 8 KB OTP program memory make it well-suited for industrial process controllers running multi-loop PID algorithms. The 33 I/O pins support digital sensor inputs, relay drivers, and HMI keypads, while the 454-byte RAM handles setpoint storage and trending buffers. The PIC17C's 8-level hardware stack is sufficient for nested interrupt service routines typical in process control firmware. Industrial designers favor the PLCC-44 socketed package for field serviceability and firmware upgrades via universal programmers.
Được đề xuất
Automotive Instrument Cluster
The PIC17C43-33/L's high-speed 8-bit core handles automotive instrument cluster tasks including speedometer pulse counting, fuel gauge ADC sampling, and warning lamp multiplexing. The USART peripheral interfaces with body control modules via LIN or K-line protocols. The 8 KB OTP memory accommodates gauge calibration tables and diagnostic routines. Designers should note the commercial 0C to +70C temperature grade of the '-33/L' variant; automotive deployments typically require the -40C to +125C 'E' grade such as PIC17C43-25E/PT.
Được đề xuất
Smart Sensor Front-End
The PIC17C43-33/L serves as a smart sensor front-end, conditioning analog signals, applying calibration coefficients, and outputting processed data via USART or parallel port. The PIC17C's 16-bit instruction word executes fixed-point arithmetic faster than 14-bit PIC16 cores, enabling real-time linearization of thermocouple and RTD sensors. The 33 I/O pins allow direct connection to multiple sensor channels without external multiplexing. The 454-byte RAM supports moving-average filters for noise rejection in industrial environments.
Được đề xuất
Motor Control and PWM Drive
The PIC17C43-33/L's capture/compare/PWM module generates precise PWM signals for brushed DC and stepper motor control, while the 33 MHz clock supports high-resolution PWM at 20 kHz switching frequency with fine duty-cycle granularity. The three integrated timers (2x 8-bit + 1x 16-bit) handle encoder feedback, current sensing, and commutation timing. The PIC17C architecture's hardware multiplier and wider instruction word accelerate Park transforms in BLDC drive algorithms. The 33 I/O pins drive H-bridge gate drivers and fault protection circuitry.
Được đề xuất
Legacy Embedded Control Platforms
The PIC17C43-33/L is widely deployed in legacy embedded platforms designed in the 1990s, including industrial printers, point-of-sale terminals, and HVAC controllers. The OTP memory stores finalized firmware that has shipped in the field for decades. Service and refurbishment operations require this part to maintain existing designs without PCB rework. The PLCC-44 socketed form factor enables easy field replacement. Engineers maintaining these platforms should evaluate migration to PIC18F or dsPIC families only when firmware updates are planned.
Được đề xuất
Educational and Development Boards
The PIC17C43-33/L is used in educational microcontroller labs and development boards teaching the PIC17C high-end 8-bit architecture. The 8 KB OTP memory is large enough for substantial student projects including assembly-language exercises, interrupt-driven peripherals, and serial communication labs. The 33 MHz speed demonstrates RISC pipeline benefits over older PIC16 designs. Universities maintaining PIC17C curriculum benefit from continued part availability for lab kit production. The PLCC-44 package in a ZIF socket simplifies student programming workflows.
Được đề xuất
Communication Protocol Bridges
The PIC17C43-33/L's integrated USART and 33 MHz processing enable protocol bridge applications between RS-232, RS-485, and proprietary serial interfaces. The 8 KB OTP holds protocol state machines, while the 454-byte RAM buffers incoming and outgoing packets. The PIC17C's deterministic interrupt latency (121 ns instruction cycle) ensures reliable timing on time-sensitive protocols. The 33 I/O pins handle handshake signals, flow control, and status LEDs in multi-drop serial networks used in industrial automation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C43-33/L — 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 | PIC17C43-16/L | PIC17C43-25E/PT | PIC17C44-33/L | PIC17C43-16I/PQ | PIC17C42A-33I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Program Memory | 8 KB OTP | 8 KB OTP - same | 8 KB OTP - same | 16 KB OTP (+100%) | 8 KB OTP - same | 4 KB OTP (-50%) |
| CPU Speed | 33 MHz | 16 MHz (-51%) | 25 MHz (-24%) | 33 MHz - same | 16 MHz (-51%) | 33 MHz - same |
| RAM | 454 bytes | 454 bytes - same | 454 bytes - same | 454 bytes - same | 454 bytes - same | 454 bytes - same |
| I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same | 33 - same |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C - same | -40C to +125C (Extended) | 0C to +70C - same | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Highest-speed 33 MHz grade in the PIC17C43 family (vsPIC17C43-16/L)
- Double program memory vs lower-memory PIC17C42A variant (vsPIC17C42A-33I/P)
- Pin-compatible upgrade path to PIC17C44 for future expansion (vsPIC17C44-33/L)
Ghi chú thiết kế
The PIC17C43-33/L operates from a single +5V supply on VDD (pin 39). Place a 100 nF decoupling capacitor as close as possible to VDD and a 10 uF bulk capacitor on the supply rail. The MCLR/VPP pin (pin 37) requires a 10 kohm pull-up to VDD for normal operation and can be driven to +13V during OTP programming. Power-on reset is internally generated; no external RC network is required.
Do not confuse the PIC17C43-33/L with the PIC16F877A in PLCC-44 - although both share the same package, their instruction sets differ significantly (16-bit vs 14-bit words, different register maps, different stack depths). Firmware compiled for one family will not execute on the other. Also note that OTP memory is one-time programmable only - the PIC17C43/JW windowed EPROM variant is required for development and code iteration.
Route the crystal oscillator traces (OSC1/OSC2, pins 7-8) as short as possible and keep them away from high-current switching traces. Use a ground guard ring around the crystal and load capacitors to reduce EMI susceptibility. For 33 MHz operation, place the crystal within 10 mm of the OSC pins. The PLLCC-44 package's J-leads provide good RF grounding through the bottom-side thermal pad if soldered to a ground pour.
The PIC17C43-33/L in PLCC-44 package has a thermal resistance (theta JA) of approximately 45 C/W. At maximum operating current of 50 mA (33 MHz, all peripherals active), power dissipation is 250 mW, resulting in a junction temperature rise of about 11C above ambient. The commercial 0C to +70C specification provides adequate margin for typical embedded enclosure environments without active cooling.
Thông tin tuân thủ
RoHS, REACH, lead-free, and halogen-free status not specified in the verified distributor data. PIC17C43-33/L is not AEC-Q100 qualified - for automotive applications choose PIC17C43-25E/PT or PIC17C43 with 'E' temperature suffix.
