PIC17C766-33E/PT - 8-bit 33MHz OTP MCU, 32KB Flash, 80-TQFP
MPN: PIC17C766-33E/PT ✗ Cuối đờiPIC17C766-33E/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, and peripheral interfaces. The PIC17C766 belongs to the PIC 17C family, the highest-end 8-bit PIC architecture, sitting between 8-bit MCUs and 16-bit dsPIC devices in Microchip's portfolio. The family is upwards compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX devices, easing migration for existing code bases. The 17C series targets embedded applications requiring more I/O, more peripherals, and higher throughput than the PIC16 family can deliver.
Key differentiating features include 66 digital I/O lines, four capture inputs, three PWM outputs, a 10-bit analog-to-digital converter with 16 input channels, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. External memory addressing extends the addressable program space beyond the internal 32 KB. Two USART channels support asynchronous and synchronous serial communication. Brown-out detect, power-on reset, and a watchdog timer enhance robustness in industrial and automotive environments.
Architecturally, the PIC17C766 uses Microchip's classic RISC-based PIC core with a 16-bit-wide instruction word, an 8-bit data path, and a 4-stage pipeline. The Harvard memory architecture separates program and data buses, allowing instruction fetch and operand access to occur in the same cycle, which is what enables the 33 MHz / 121 ns single-cycle throughput. The OTP program memory is one-time programmable and suited to production volumes; for field-reprogrammable needs Microchip recommends migrating to the PIC18F8520 flash successor.
Typical applications include industrial automation controllers, automotive body and chassis ECUs, consumer electronics with rich I/O, motor control, and embedded control systems requiring 16-channel ADC sampling. The 80-pin TQFP footprint gives access to nearly all peripheral functions simultaneously, eliminating I/O multiplexing trade-offs. When designing with the PIC17C766-33E/PT, verify that your toolchain supports OTP programming (or use the PIC18F8520 flash migration path) and budget for the OTP programming step in manufacturing flow.
Bộ thay thế dễ dàng lắp đặt cho PIC17C766-33E/PT — 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 PIC17C766-33E/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, I/O Pins, ADC, Data Bus Width.
PIC17C766-33I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762-33I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8520-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-16/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766-33E/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC 8-bit RISC |
| Instruction Set Width | 16-bit (58 single-word instructions) |
| Tần số xung maksimum | 33 MHz |
| Instruction Cycle Time | 121 ns |
| Program Memory | 32 KB (16K x 16) OTP |
| RAM | 902 bytes |
| I/O Pins | 66 |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +125 C (Extended) |
| Hộp | 80-TQFP (12x12 mm) |
| Kiểu lắp đặt | Surface Mount (Gull Wing) |
| A/D Converter | 10-bit, 16 channels |
| PWM Outputs | 3 |
| Capture Inputs | 4 |
| Serial Interfaces | SPI, I2C, 2x USART |
| Temperature Grade | Automotive |
| Peripherals | Brown-out Detect, POR, WDT |
| External Memory Bus | Yes (Extended addressing) |
| Status | Discontinued / NRND - recommended migration to PIC18F8520 |
Cấu hình chân PIC17C766-33E/PT
| Chân 1 | OSC1 — Crystal/oscillator input |
| Chân 2 | OSC2 — Crystal/oscillator output |
| Chân 3 | MCLR — Master clear reset (active low) |
| Chân 4 | RA0 — Port A bit 0 (digital I/O) |
| Chân 5 | RA1 — Port A bit 1 (digital I/O) |
| Chân 6 | RA2 — Port A bit 2 (digital I/O) |
| Chân 7 | RA3 — Port A bit 3 (digital I/O) |
| Chân 8 | RA4 — Port A bit 4 (digital I/O, T0CKI) |
| Chân 9 | RA5 — Port A bit 5 (digital I/O) |
| Chân 10 | VSS — Ground |
| Chân 11 | VDD — Positive supply (5V) |
| Chân 12 | RB0 — Port B bit 0 (digital I/O, INT0) |
| Chân 13 | RB1 — Port B bit 1 (digital I/O, INT1) |
| Chân 14 | RB2 — Port B bit 2 (digital I/O) |
| Chân 15 | RB3 — Port B bit 3 (digital I/O) |
| Chân 16 | RB4 — Port B bit 4 (digital I/O) |
| Chân 17 | RB5 — Port B bit 5 (digital I/O) |
| Chân 18 | RB6 — Port B bit 6 (digital I/O, PGC) |
| Chân 19 | RB7 — Port B bit 7 (digital I/O, PGD) |
| Chân 20 | VSS — Ground |
| Chân 21 | RC0 — Port C bit 0 (digital I/O, T1CKI) |
| Chân 22 | RC1 — Port C bit 1 (digital I/O, CCP2) |
| Chân 23 | RC2 — Port C bit 2 (digital I/O, CCP1) |
| Chân 24 | RC3 — Port C bit 3 (digital I/O, SCL) |
| Chân 25 | RC4 — Port C bit 4 (digital I/O, SDA) |
| Chân 26 | RC5 — Port C bit 5 (digital I/O, SDO) |
| Chân 27 | RC6 — Port C bit 6 (digital I/O, TX) |
| Chân 28 | RC7 — Port C bit 7 (digital I/O, RX) |
| Chân 29 | RD0 — Port D bit 0 (digital I/O) |
| Chân 30 | RD1 — Port D bit 1 (digital I/O) |
| Chân 31 | RD2 — Port D bit 2 (digital I/O) |
| Chân 32 | RD3 — Port D bit 3 (digital I/O) |
| Chân 33 | RD4 — Port D bit 4 (digital I/O) |
| Chân 34 | RD5 — Port D bit 5 (digital I/O) |
| Chân 35 | RD6 — Port D bit 6 (digital I/O) |
| Chân 36 | RD7 — Port D bit 7 (digital I/O) |
| Chân 37 | VSS — Ground |
| Chân 38 | VDD — Positive supply (5V) |
| Chân 39 | RE0 — Port E bit 0 (digital I/O, AN0) |
| Chân 40 | RE1 — Port E bit 1 (digital I/O, AN1) |
| Chân 41 | RE2 — Port E bit 2 (digital I/O, AN2) |
| Chân 42 | RE3 — Port E bit 3 (digital I/O, AN3) |
| Chân 43 | RE4 — Port E bit 4 (digital I/O, AN4) |
| Chân 44 | RE5 — Port E bit 5 (digital I/O, AN5) |
| Chân 45 | RE6 — Port E bit 6 (digital I/O, AN6) |
| Chân 46 | RE7 — Port E bit 7 (digital I/O, AN7) |
| Chân 47 | RF0 — Port F bit 0 (digital I/O, AN8) |
| Chân 48 | RF1 — Port F bit 1 (digital I/O, AN9) |
| Chân 49 | RF2 — Port F bit 2 (digital I/O, AN10) |
| Chân 50 | RF3 — Port F bit 3 (digital I/O, AN11) |
| Chân 51 | RF4 — Port F bit 4 (digital I/O, AN12) |
| Chân 52 | RF5 — Port F bit 5 (digital I/O, AN13) |
| Chân 53 | RF6 — Port F bit 6 (digital I/O, AN14) |
| Chân 54 | RF7 — Port F bit 7 (digital I/O, AN15) |
| Chân 55 | RG0 — Port G bit 0 (digital I/O) |
| Chân 56 | RG1 — Port G bit 1 (digital I/O, C1OUT) |
| Chân 57 | RG2 — Port G bit 2 (digital I/O, C2OUT) |
| Chân 58 | RG3 — Port G bit 3 (digital I/O) |
| Chân 59 | RG4 — Port G bit 4 (digital I/O) |
| Chân 60 | VSS — Ground |
| Chân 61 | VDD — Positive supply (5V) |
| Chân 62 | RH0 — Port H bit 0 (digital I/O) |
| Chân 63 | RH1 — Port H bit 1 (digital I/O) |
| Chân 64 | RH2 — Port H bit 2 (digital I/O) |
| Chân 65 | RH3 — Port H bit 3 (digital I/O) |
| Chân 66 | RH4 — Port H bit 4 (digital I/O) |
| Chân 67 | RH5 — Port H bit 5 (digital I/O) |
| Chân 68 | RH6 — Port H bit 6 (digital I/O) |
| Chân 69 | RH7 — Port H bit 7 (digital I/O) |
| Chân 70 | RJ0 — Port J bit 0 (digital I/O) |
| Chân 71 | RJ1 — Port J bit 1 (digital I/O) |
| Chân 72 | RJ2 — Port J bit 2 (digital I/O) |
| Chân 73 | RJ3 — Port J bit 3 (digital I/O) |
| Chân 74 | RJ4 — Port J bit 4 (digital I/O) |
| Chân 75 | RJ5 — Port J bit 5 (digital I/O) |
| Chân 76 | RJ6 — Port J bit 6 (digital I/O) |
| Chân 77 | RJ7 — Port J bit 7 (digital I/O) |
| Chân 78 | VSS — Ground |
| Chân 79 | VDD — Positive supply (5V) |
| Chân 80 | NC — Not connected (per datasheet package variant) |
Ứng dụng tiêu biểu
PIC17C766-33E/PT phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Automotive Body and Chassis ECUs, Motor Control and PWM Drive, Multi-Sensor Data Acquisition Systems, Consumer Electronics with Rich I/O, Embedded Control Legacy Replacement.
Industrial Automation Controllers
The PIC17C766-33E/PT's 33 MHz throughput, 66 I/O pins, and 16-channel 10-bit ADC make it well suited for industrial PLC and process controller boards. The 121 ns single-cycle instruction execution delivers 8.25 MIPS, enough to scan digital inputs, schedule PID loops, and drive PWM outputs simultaneously. The -40 C to +125 C extended temperature grade supports factory-floor enclosures and outdoor cabinets without additional thermal conditioning. Its 80-TQFP footprint gives access to nearly all peripheral functions concurrently, eliminating I/O multiplexing trade-offs that constrain smaller-pin PIC16 designs. Recommended companion MPNs: PIC18F8520 (flash migration), PIC16LF877A (subordinate node).
Được đề xuất
Automotive Body and Chassis ECUs
The PIC17C766-33E/PT's automotive temperature grade (-40 C to +125 C), 4.5-5.5 V supply tolerance, and brown-out/POR/watchdog peripherals suit it for body control modules, HVAC controllers, and instrument cluster nodes. The 16-channel 10-bit ADC handles multiple sensor inputs (temperature, pressure, position) without external multiplexer ICs. The three PWM outputs and four capture inputs support DC motor speed control and quadrature encoder feedback for small actuators. Designers targeting new automotive designs should verify AEC-Q100 qualification status with Microchip, as the PIC17 family predates many modern automotive qualifications. Recommended companion MPNs: PIC17C756AT-33E/PT (sibling automotive variant), PIC17C762-33I/PT (lower-memory sibling).
Được đề xuất
Motor Control and PWM Drive
The PIC17C766-33E/PT's three hardware PWM outputs and four capture inputs support three-phase or dual-bridge DC motor control, including brushless DC and stepper drive topologies. With 33 MHz clock and 121 ns instruction cycle, the firmware can execute commutation tables, current-sense sampling, and fault handling at high PWM duty-cycle frequencies without CPU loading. The 10-bit ADC at 16 channels allows simultaneous current, voltage, and back-EMF sensing across the H-bridge. Recommended companion MPNs: PIC16LF873A-I/SO (PWM satellite MCU), DSPIC33EV256GM002-E/SO (advanced dsPIC motor-control alternative).
Được đề xuất
Multi-Sensor Data Acquisition Systems
The PIC17C766-33E/PT integrates a 10-bit ADC with 16 input channels, two USARTs, and SPI/I2C for sensor expansion. Engineers building multi-channel data loggers, environmental monitors, or instrumentation front-ends benefit from the on-chip ADC eliminating external converter cost. The 902 bytes of RAM buffer sample sets before UART transmission, and the 33 MHz core executes filter math without CPU saturation. The 80-TQFP exposes enough I/O to connect parallel sensors, status LEDs, and operator interfaces on the same board. Recommended companion MPNs: DSPIC33EV128GM104-E/P8 (DSP upgrade path), PIC16LF872-I/SO (low-power sensor node).
Được đề xuất
Consumer Electronics with Rich I/O
Appliance controllers, smart-home hubs, and consumer entertainment products benefit from the PIC17C766-33E/PT's 66 I/O lines, dual USART for networking, and SPI/I2C for peripheral expansion. The 32 KB OTP program memory holds substantial user-interface state machines plus communication stacks. The PIC17 architecture's Harvard bus and 4-stage pipeline execute button-scan, display-update, and protocol-tick routines in parallel. For cost-sensitive consumer products, evaluate the migration to PIC18F8520 for flash reprogrammability and BOM simplification. Recommended companion MPNs: PIC16LF870-I/SP (UI satellite), PIC16LF727-I/ML (low-power companion).
Được đề xuất
Embedded Control Legacy Replacement
Many long-lifecycle industrial and medical systems still require pin-compatible PIC17 replacements to avoid PCB re-spin. The PIC17C766-33E/PT sits at the top of the PIC17 family and is interchangeable on the 80-TQFP footprint with PIC17C756A-33E/PT and PIC17C756AT-33E/PT siblings. Designs validated on PIC17C756A can swap to PIC17C766-33E/PT for more headroom. Where flash is required, PIC18F8520-I/PT is the official migration target with the same 80-TQFP footprint. Recommended companion MPNs: PIC17C756A-33E/PT (direct swap), PIC18F8520-I/PT (flash migration).
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C766-33E/PT — 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 | PIC17C766-33I/PT | PIC17C756AT-33E/PT | PIC17C756A-33E/PT | PIC17C762-33I/PT | PIC18F8520-I/PT | PIC17C756AT-16/PT |
|---|---|---|---|---|---|---|---|
| Package | 80-TQFP (12x12) | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC18 RISC (flash) | 8-bit PIC17 RISC |
| Max Clock Frequency | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 40 MHz | 16 MHz (52% lower) |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP (-50%) | 32 KB Flash (in-system) | 32 KB OTP |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 454 bytes (-50%) | 2048 bytes (+127%) | 902 bytes |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| Program Memory Type | OTP (one-time programmable) | OTP | OTP | OTP | OTP | Flash (in-system) | OTP |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V (wider) | 4.5 V to 5.5 V |
| Lifecycle Status | NRND (Discontinued) | NRND | NRND | NRND | NRND | Active (recommended migration) | NRND |
Bảo phân biệt quan trọng
- Highest-end 8-bit PIC with 32 KB OTP, 902 RAM, and 16-channel 10-bit ADC (vsPIC17C762-33I/PT)
- Official flash-based migration target with in-system reprogrammability (vsPIC18F8520-I/PT)
- Wider -40 C to +125 C automotive temperature range (vsPIC17C766-33I/PT)
Ghi chú thiết kế
PIC17C766-33E/PT uses OTP (one-time programmable) memory, not flash. Each unit must be programmed externally with a Microchip-supported device programmer before soldering; firmware revisions require a new batch of devices. For development or low-volume production, design with PIC18F8520-I/PT instead - it shares the 80-TQFP footprint and supports in-system flash programming via ICSP. Plan the OTP programming step and programming-yield cost into manufacturing flow from day one.
The PIC17C766-33E/PT requires a stable 4.5 V to 5.5 V supply with bulk decoupling of at least 10 uF + 100 nF ceramic near each VDD/VSS pair (multiple pairs are present on the 80-TQFP). Brown-out detect and power-on reset are on-chip but require correct CONFIG fuse settings - leaving BOR disabled can cause undefined behavior during slow power-ramp events. Decouple analog AVdd separately if your design uses the ADC; route AVss to a clean ground island.
The 80-pin TQFP (12x12 mm, 0.5 mm pitch) requires PCB design rules for fine-pitch QFP: solder mask-defined or non-solder-mask-defined pads with adequate paste apertures, and ground plane flooding under the package for thermal relief. Estimated: at 33 MHz with full peripheral activity, the device dissipates approximately 0.5 W; a small copper pour (>= 1 sq cm) is sufficient for thermal management without a heatsink. Keep crystal traces short and surrounded by ground pour to minimize EMI.
OSC1/OSC2 crystal traces must be kept short (< 10 mm) and isolated from noisy switching signals. Place the load capacitors within 3 mm of the crystal pins. For EMI-sensitive applications, place a guard ring of ground vias around the crystal area. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF decoupling cap to ground; do not leave MCLR floating or the device may randomly reset. The PGC/PGD pins (RB6/RB7) need isolation from other signal traces during in-circuit programming.
Thông tin tuân thủ
RoHS, REACH, lead-free and halogen-free status are [DATA_NEEDED] - not present in the provided web data. Part is listed as automotive temperature grade (-40C to +125C E suffix) but specific AEC-Q100 qualification is not in the provided data; verify with Microchip for automotive qualification status. PIC17 family predates many modern automotive certifications; PIC18F8520 is the recommended flash migration path.
