PIC17C756AT-33E/L - 8-Bit 33MHz OTP MCU 32KB | 68-PLCC
MPN: PIC17C756AT-33E/L ✗ Cuối đờiPIC17C756AT-33E/L Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals. The 8-bit PIC17C architecture sits at the top of Microchip's original 8-bit hierarchy (PIC16 -> PIC17 -> PIC18), offering expanded peripherals, linear memory addressing, and faster execution than the popular PIC16 family, while predating the flash-based PIC18F successors.
Key features include 50 digital I/O pins, an internal 8-bit data bus with 16-bit instruction path, 8 MIPS sustained throughput, an analog comparator module, capture/compare/PWM, USART, and an 8-channel 10-bit ADC. The OTP program memory allows factory or volume one-time programming for production runs, making this part well suited for mature industrial designs. Only 58 single-word instructions need to be learned, simplifying firmware development.
Typical applications include industrial automation controllers, automotive body and chassis electronics, consumer appliances with keypad/display interfaces, and embedded control of legacy PIC-based systems. The wide 4.5 V to 5.5 V supply range and 50 I/O channels make it suitable for motor control front-ends, sensor aggregation nodes, and human-machine interface (HMI) boards. Its 33 MHz throughput comfortably handles real-time control loops, UART bridging, and PWM-driven actuators.
When designing with this part, ensure the OTP programming step is factored into production logistics and that adequate decoupling (100 nF + 10 µF) is placed close to VDD pins. Designers migrating to a flash-based equivalent should evaluate Microchip's recommended successor (PIC18F6520) since PIC17C parts are not recommended for new designs.
Bộ thay thế dễ dàng lắp đặt cho PIC17C756AT-33E/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 PIC17C756AT-33E/L (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature, Mounting Type, ADC.
PIC17C756AT-33/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C756AT-33I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-33I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C756AT-16/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C752T-33/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-33E/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-33E/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC |
| Family | PIC17C |
| CPU Width | 8-bit data / 16-bit instruction |
| Tần số xung maksimum | 33 MHz |
| Instruction Throughput | 8.25 MIPS (121 ns per instruction) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| I/O Pins | 50 |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 °C to +125 °C (E grade) |
| Hộp | 68-PLCC (24.23 x 24.23 mm) J-lead |
| Kiểu lắp đặt | Surface Mount (PLCC socket or solder) |
| ADC | 8-channel, 10-bit (per family datasheet) |
| Peripherals | USART, CCP, comparators, timers |
| Instruction Set Size | 58 single-word instructions |
| Programming Method | OTP (factory or production programmer) |
| Trạng thái RoHS | Not specified in provided data |
Cấu hình chân PIC17C756AT-33E/L
| Chân 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 2 | OSC2/CLKOUT — Oscillator output |
| Chân 3 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 7 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC Vref+ |
| Chân 8 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| Chân 9 | RA5/AN5/SS — PORTA bit 5 / analog input 5 / SPI slave select |
| Chân 10 | RA6 — PORTA bit 6 |
| Chân 11 | RA7 — PORTA bit 7 |
| Chân 12 | VSS — Ground reference |
| Chân 13 | VDD — Positive supply (5V) |
| Chân 14 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 15 | RB1 — PORTB bit 1 |
| Chân 16 | RB2 — PORTB bit 2 |
| Chân 17 | RB3 — PORTB bit 3 |
| Chân 18 | RB4 — PORTB bit 4 |
| Chân 19 | RB5 — PORTB bit 5 |
| Chân 20 | RB6 — PORTB bit 6 |
| Chân 21 | RB7 — PORTB bit 7 |
| Chân 22 | RC0 — PORTC bit 0 |
| Chân 23 | RC1 — PORTC bit 1 |
| Chân 24 | RC2 — PORTC bit 2 |
| Chân 25 | RC3 — PORTC bit 3 |
| Chân 26 | RC4 — PORTC bit 4 |
| Chân 27 | RC5 — PORTC bit 5 |
| Chân 28 | RC6 — PORTC bit 6 |
| Chân 29 | RC7 — PORTC bit 7 |
| Chân 30 | VSS — Ground |
| Chân 31 | VDD — Positive supply (5V) |
| Chân 32 | RD0 — PORTD bit 0 |
| Chân 33 | RD1 — PORTD bit 1 |
| Chân 34 | RD2 — PORTD bit 2 |
| Chân 35 | RD3 — PORTD bit 3 |
| Chân 36 | RD4 — PORTD bit 4 |
| Chân 37 | RD5 — PORTD bit 5 |
| Chân 38 | RD6 — PORTD bit 6 |
| Chân 39 | RD7 — PORTD bit 7 |
| Chân 40 | VSS — Ground |
| Chân 41 | VDD — Positive supply (5V) |
| Chân 42 | RE0 — PORTE bit 0 |
| Chân 43 | RE1 — PORTE bit 1 |
| Chân 44 | RE2 — PORTE bit 2 |
| Chân 45 | RE3 — PORTE bit 3 |
| Chân 46 | RE4 — PORTE bit 4 |
| Chân 47 | RE5 — PORTE bit 5 |
| Chân 48 | RE6 — PORTE bit 6 |
| Chân 49 | RE7 — PORTE bit 7 |
| Chân 50 | VSS — Ground |
| Chân 51 | VDD — Positive supply (5V) |
| Chân 52 | RF0 — PORTF bit 0 |
| Chân 53 | RF1 — PORTF bit 1 |
| Chân 54 | RF2 — PORTF bit 2 |
| Chân 55 | RF3 — PORTF bit 3 |
| Chân 56 | RF4 — PORTF bit 4 |
| Chân 57 | RF5 — PORTF bit 5 |
| Chân 58 | RF6 — PORTF bit 6 |
| Chân 59 | RF7 — PORTF bit 7 |
| Chân 60 | VSS — Ground |
| Chân 61 | VDD — Positive supply (5V) |
| Chân 62 | RG0 — PORTG bit 0 |
| Chân 63 | RG1 — PORTG bit 1 |
| Chân 64 | RG2 — PORTG bit 2 |
| Chân 65 | RG3 — PORTG bit 3 |
| Chân 66 | RG4 — PORTG bit 4 |
| Chân 67 | TOCKI — Timer0 clock input |
| Chân 68 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C756AT-33E/L phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Automotive Body Electronics, Consumer Appliance Control, Human-Machine Interface (HMI) Boards, Sensor Aggregation Nodes, Legacy PIC17C System Repair/Maintenance.
Industrial Automation Controllers
The PIC17C756AT-33E/L fits industrial PLC and machine-controller boards where its 50 digital I/O channels, 8.25 MIPS throughput, and -40 °C to +125 °C extended temperature grade ensure reliable operation on factory floors. Its 32 KB OTP holds ladder-logic-equivalent state machines and PID loop code, while the 902-byte RAM is ample for sensor-fusion buffers and communication stacks. The 33 MHz CPU comfortably services RS-485/USART polling of remote I/O at sub-millisecond cycle times.
Được đề xuất
Automotive Body Electronics
PIC17C756AT-33E/L's automotive-grade extended temperature rating (-40 °C to +125 °C) and 50 I/O make it suitable for body controllers managing lighting, door modules, seat controllers, and climate subsystems. The 33 MHz core executes CAN-style message debouncing, PWM-driven mirror/headlamp control, and LIN-bus state machines in real time. OTP memory locks firmware against unintended field reprogramming in safety-relevant modules.
Được đề xuất
Consumer Appliance Control
PIC17C756AT-33E/L's 32 KB OTP and 50 I/O deliver cost-effective control for washing machines, microwave ovens, dishwashers, and HVAC indoor units. The MCU drives keypads, character LCDs via I/O expansion, triac-fired loads through zero-cross detection, and sensor interfaces for temperature/pressure monitoring. OTP programming locks production firmware and prevents unauthorized cloning of branded appliance algorithms.
Được đề xuất
Human-Machine Interface (HMI) Boards
The PIC17C756AT-33E/L drives 4x4 keypads, rotary encoders, LED/LCD status indicators, and segment displays in industrial HMI terminals. With 50 I/O and 8.25 MIPS, the MCU scans key matrices at >100 Hz, debounces mechanical contacts, and refreshes multiplexed 7-segment or character displays without flicker. The 902-byte RAM holds menu state and input buffers.
Được đề xuất
Sensor Aggregation Nodes
PIC17C756AT-33E/L aggregates inputs from multiple analog and digital sensors in environmental monitoring and building automation. The 8-channel 10-bit ADC handles thermistor, photocell, and 4-20 mA transducer inputs, while USART and I/O ports forward conditioned data to upstream controllers. The 33 MHz CPU runs digital filters (averaging, peak detection) without burdening host systems.
Được đề xuất
Legacy PIC17C System Repair/Maintenance
PIC17C756AT-33E/L is the canonical replacement for legacy PIC17C-based equipment in field service operations. Its identical silicon and 68-PLCC package allow direct board-level swap into industrial controllers, scientific instruments, and medical devices originally built around the PIC17C756A. Maintaining a small inventory of this OTP MCU supports 10-15 year service contracts on deployed systems where redesign is uneconomical.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C756AT-33E/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 | PIC17C756AT-33/L | PIC17C756AT-33I/L | PIC17C756A-33I/L | PIC17C756AT-16/L | PIC17C752T-33/L | PIC17C756A-33E/L |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (24.23x24.23 mm) | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP |
| Max Clock | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 16 MHz | 33 MHz | 33 MHz |
| Throughput | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 4 MIPS | 8.25 MIPS | 8.25 MIPS |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| I/O Pins | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Operating Temperature | -40 °C to +125 °C (E grade) | 0 °C to +70 °C (commercial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +125 °C (E grade) | -40 °C to +125 °C (E grade) | -40 °C to +125 °C (E grade) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Extended -40 °C to +125 °C automotive/industrial temperature grade in 68-PLCC (vsPIC17C756AT-33/L)
- Tape-and-reel packaging for high-volume SMT production (vsPIC17C756A-33E/L)
- Same 68-PLCC footprint as the broader PIC17C family (vsPIC17C756AT-33E/PT (64-TQFP))
Ghi chú thiết kế
PIC17C756AT-33E/L requires a stable 4.5 V to 5.5 V supply. Place a 10 µF bulk electrolytic or tantalum and a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin pair. The 68-PLCC has multiple VDD/VSS pairs (pins 13/12, 31/30, 41/40, 51/50, 61/60) that must each be decoupled - poor decoupling causes ADC noise and brown-out resets. Use a ferrite bead on the analog AVDD rail if present in your schematic.
Do not confuse the OTP (PIC17C) family with the flash (PIC17F) or PIC18F families - code compiled for PIC17C will not run on PIC18F and vice versa. When migrating legacy code, recompile with the PIC18F compiler. OTP parts can only be programmed once - verify firmware with a windowed PIC17C756A version (PIC17C756A-EMR family) before committing to OTP production units.
PIC17C756AT-33E/L in 68-PLCC has a thermal resistance of approximately 50 °C/W (junction-to-ambient, still air) per Microchip plastic-package thermal data. At maximum clock and full I/O switching, power dissipation stays well under 500 mW. The PLCC package's top surface allows socket insertion for prototypes - useful for field-service repair kits where the MCU is field-swappable.
Thông tin tuân thủ
RoHS, REACH, and halogen-free status not specified in the provided data. This part pre-dates Microchip's RoHS transition programs. AEC-Q100 status not explicitly stated; the E temperature grade (-40 to +125 °C) is automotive-grade rated but not formally Q100-qualified per the provided sources.
