PIC17C766T-16E/PT - 8-Bit OTP MCU, 32KB, 66 I/O, 80-TQFP | Microchip
MPN: PIC17C766T-16E/PT ✗ Cuối đờiPIC17C766T-16E/PT Tóm tắt
An OTP-based microcontroller is a non-volatile program-memory device that can be programmed once after manufacture using a device programmer, and retains its code indefinitely without a battery. The OTP variant sits in the broader hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> programmable logic device -> semiconductor. The PIC17C family specifically targets applications requiring higher performance and more I/O than the PIC16 mid-range family, while keeping the familiar PIC instruction set.
Key features of the PIC17C766T-16E/PT include 66 digital I/O lines distributed across multiple ports, an internal 8 MHz oscillator reference, an external oscillator input for higher-frequency operation up to 16 MHz, a 16-bit data bus architecture, and a 4.5V to 5.5V single-supply operating range. It also integrates multiple timers, a USART, and interrupt capability typical of the PIC17C series.
Typical applications for the PIC17C766T-16E/PT include industrial control systems, instrumentation, motor control, and any embedded design needing a high-pin-count 8-bit MCU with deterministic single-cycle instruction execution. Engineers often select this part when migrating from PIC16 designs that have outgrown their I/O count.
A key design consideration is that the 'E' suffix denotes the industrial operating temperature range (-40°C to +125°C) and the 'T' suffix indicates tape-and-reel packaging. Because this is an OTP device, firmware revisions require a new part; consider the Flash-based PIC18F or dsPIC families for in-field reprogrammability.
This page synthesizes distributor pricing, package-level alternatives, and practical design considerations not typically found in the manufacturer datasheet. Pricing reflects real-time distributor data as of 2026-09-26.
Bộ thay thế dễ dàng lắp đặt cho PIC17C766T-16E/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 PIC17C766T-16E/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, I/O Pins, ADC, RoHS Status.
PIC17C766-16E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766T-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-33I/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766T-16E/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC17C RISC |
| Instruction Set | 58 single-word instructions |
| Program Memory (ROM) | 32 KB (16K x 16) OTP |
| RAM | 902 bytes |
| Bề rộng đường dữ liệu | 16-bit |
| Maximum Clock Speed | 16 MHz |
| Instruction Cycle Time | 121 ns (single-cycle) |
| Supply Voltage (Vcc) | 4.5 V to 5.5 V |
| I/O Pins | 66 |
| Hộp | 80-TQFP (PT), 12x12 mm |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 °C to +125 °C (industrial, 'E' suffix) |
| Packaging Form | Tape & Reel ('T' suffix) |
| Trạng thái RoHS | Compliant |
| Trạng thái vòng đời | Not Recommended for New Designs (NRND) |
Cấu hình chân PIC17C766T-16E/PT
| 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 | OSC1 — Crystal oscillator input |
| Chân 8 | OSC2 — Crystal oscillator output |
| Chân 9 | MCLR — Master clear (reset) input |
| Chân 10 | Vss — Ground reference |
| Chân 11 | Vdd — Positive supply (+5 V) |
| Chân 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 13 | RB1 — PORTB bit 1 |
| Chân 14 | RB2 — PORTB bit 2 |
| Chân 15 | RB3 — PORTB bit 3 |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 20 | Vss — Ground reference |
| Chân 21 | RC0 — PORTC bit 0 |
| Chân 22 | RC1 — PORTC bit 1 |
| Chân 23 | RC2 — PORTC bit 2 |
| Chân 24 | RC3 — PORTC bit 3 |
| Chân 25 | RC4 — PORTC bit 4 |
| Chân 26 | RC5 — PORTC bit 5 |
| Chân 27 | RC6/TX — PORTC bit 6 / USART transmit |
| Chân 28 | RC7/RX — PORTC bit 7 / USART receive |
| Chân 29 | Vdd — Positive supply (+5 V) |
| Chân 30 | Vss — Ground reference |
| Chân 31 | RD0 — PORTD bit 0 |
| Chân 32 | RD1 — PORTD bit 1 |
| Chân 33 | RD2 — PORTD bit 2 |
| Chân 34 | RD3 — PORTD bit 3 |
| Chân 35 | RD4 — PORTD bit 4 |
| Chân 36 | RD5 — PORTD bit 5 |
| Chân 37 | RD6 — PORTD bit 6 |
| Chân 38 | RD7 — PORTD bit 7 |
| Chân 39 | Vdd — Positive supply (+5 V) |
| Chân 40 | Vss — Ground reference |
| Chân 41 | RE0 — PORTE bit 0 |
| Chân 42 | RE1 — PORTE bit 1 |
| Chân 43 | RE2 — PORTE bit 2 |
| Chân 44 | RE3 — PORTE bit 3 |
| Chân 45 | RE4 — PORTE bit 4 |
| Chân 46 | RE5 — PORTE bit 5 |
| Chân 47 | RE6 — PORTE bit 6 |
| Chân 48 | RE7 — PORTE bit 7 |
| Chân 49 | Vss — Ground reference |
| Chân 50 | Vdd — Positive supply (+5 V) |
| Chân 51 | RF0 — PORTF bit 0 |
| Chân 52 | RF1 — PORTF bit 1 |
| Chân 53 | RF2 — PORTF bit 2 |
| Chân 54 | RF3 — PORTF bit 3 |
| Chân 55 | RF4 — PORTF bit 4 |
| Chân 56 | RF5 — PORTF bit 5 |
| Chân 57 | RF6 — PORTF bit 6 |
| Chân 58 | RF7 — PORTF bit 7 |
| Chân 59 | Vdd — Positive supply (+5 V) |
| Chân 60 | Vss — Ground reference |
| Chân 61 | RG0 — PORTG bit 0 |
| Chân 62 | RG1 — PORTG bit 1 |
| Chân 63 | RG2 — PORTG bit 2 |
| Chân 64 | RG3 — PORTG bit 3 |
| Chân 65 | RG4 — PORTG bit 4 |
| Chân 66 | NC — Not connected (per datasheet) |
| Chân 67 | NC — Not connected (per datasheet) |
| Chân 68 | NC — Not connected (per datasheet) |
| Chân 69 | NC — Not connected (per datasheet) |
| Chân 70 | NC — Not connected (per datasheet) |
| Chân 71 | NC — Not connected (per datasheet) |
| Chân 72 | NC — Not connected (per datasheet) |
| Chân 73 | NC — Not connected (per datasheet) |
| Chân 74 | NC — Not connected (per datasheet) |
| Chân 75 | NC — Not connected (per datasheet) |
| Chân 76 | NC — Not connected (per datasheet) |
| Chân 77 | NC — Not connected (per datasheet) |
| Chân 78 | NC — Not connected (per datasheet) |
| Chân 79 | NC — Not connected (per datasheet) |
| Chân 80 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C766T-16E/PT phù hợp cho 6 Áp dụngs: Industrial Process Control, Test and Measurement Instrumentation, Motor Control and Drive Electronics, Point-of-Sale Terminals and Peripherals, Building Automation HVAC Controllers, Medical Device Front Panels.
Industrial Process Control
The PIC17C766T-16E/PT's 66 digital I/O lines and 16 MHz single-cycle execution make it well suited for industrial process-control PLCs that scan many discrete sensors and actuators in real time. With 32 KB of OTP program memory the MCU can host a complete ladder-logic interpreter plus custom device drivers, while the 121 ns instruction cycle keeps loop-scan latency below 1 ms for typical 1k-point I/O maps. The industrial -40 to +125 C temperature grade ensures operation in unheated cabinet environments near motors and relays. Pair the part with opto-isolated input modules and the USART for HMI link.
Được đề xuất
Test and Measurement Instrumentation
Bench-top instruments such as digital multimeters, oscilloscope front-ends, and signal-generator controllers leverage the PIC17C766T-16E/PT's deterministic 121 ns instruction cycle for precise timing of ADC triggers, range-switch sequencing, and LCD refresh. The 902 bytes of RAM buffer acquired samples while the 32 KB OTP holds calibration tables and user-interface firmware. The 66 I/O easily drive a 4x20 character LCD, a 4x4 keypad, and multiple rotary encoders simultaneously without external I/O expanders.
Được đề xuất
Motor Control and Drive Electronics
Stepper and DC-servo drives use the PIC17C766T-16E/PT's high I/O count to generate multi-phase PWM, read Hall-effect sensors, and manage direction-logic outputs in a single chip. Single-cycle 121 ns execution lets the MCU close current loops at rates above 50 kHz, while 32 KB of OTP code space accommodates field-oriented-control state machines and serial command interfaces. The -40 to +125 C industrial grade tolerates the thermal environment inside a sealed motor-drive enclosure.
Được đề xuất
Point-of-Sale Terminals and Peripherals
POS terminals and receipt printers benefit from the PIC17C766T-16E/PT's 66 I/O for keypad matrix scanning, LCD drive, thermal-printer head control, and magnetic-stripe-reader interface. The 16 MHz clock executes encryption routines and USB-stack polling within budget, and 902 bytes of RAM buffer transaction data before forwarding to the host. OTP program memory protects proprietary firmware from external read-back in deployed units.
Được đề xuất
Building Automation HVAC Controllers
Commercial HVAC controllers use the PIC17C766T-16E/PT to read multiple temperature sensors, manage damper and valve actuators, drive alphanumeric displays, and communicate over Modbus or BACnet links. The 66 I/O count accommodates a full multi-zone controller without external I/O expanders, and the wide 4.5-5.5 V supply range aligns with 5 V industrial backplanes. The 32 KB OTP holds scheduling, logging, and PID-control algorithms.
Được đề xuất
Medical Device Front Panels
Patient monitors, infusion pumps, and diagnostic analyzers leverage the PIC17C766T-16E/PT for human-interface duties: TFT/LCD driving, touchscreen scanning, keypad decoding, and alarm-LED multiplexing. The deterministic 121 ns instruction cycle supports real-time button-debounce and safety-watchdog logic required by IEC 60601-1. The 902 bytes of RAM buffer alarm logs while the 32 KB OTP stores UI graphics and device-state machines.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C766T-16E/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 | PIC17C766-16E/PT | PIC17C766T-16I/PT | PIC17C766-16I/PT | PIC17C756AT-33E/PT | PIC17C756AT-33I/L | PIC17C756A-16I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (PT) | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-TQFP (PT) - same | 80-PLCC (L) - different | 80-TQFP (PT) - same |
| Program Memory | 32 KB (16K x 16) OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 33 MHz | 16 MHz |
| I/O Pins | 66 | 66 | 66 | 66 | 50 | 50 | 50 |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| 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 | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) |
| Packaging Form | Tape & Reel | Tray | Tape & Reel | Tray | Tape & Reel | Tape & Reel (PLCC) | Tray |
Bảo phân biệt quan trọng
- Same silicon die available in tape-and-reel and tray forms (vsPIC17C766-16E/PT)
- Wider industrial temperature range (-40 to +125 C) than I-suffix variants (vsPIC17C766T-16I/PT)
- Higher I/O count (66) than PIC17C756A siblings (50) (vsPIC17C756AT-33E/PT)
Ghi chú thiết kế
Estimated: at Vdd = 5.0 V, Vih = 0.4 Vdd, Vil = 0.2 Vdd, the PIC17C766T-16E/PT draws approximately 25 mA active and 5 µA standby (typical). Place a 10 µF bulk tantalum at the board supply input, plus a 100 nF ceramic decoupling cap within 1 cm of each Vdd/Vss pair. Use a star-ground topology with the MCU ground pin as the central reference to keep digital switching currents out of analog signal paths. Connect all Vss pins; leaving any floating causes undefined I/O behavior at high clock rates.
The PIC17C766T-16E/PT is OTP - the program memory cannot be erased or rewritten after programming. Build and qualification units MUST be programmed and verified before production programming; there is no field-update path. Plan a last-time-buy strategy because Microchip has marked this part NRND. For new designs, evaluate Flash-based replacements such as PIC18F8720 (80-pin TQFP) or dsPIC33FJ256GP710A (80-pin TQFP) which retain the same I/O count and pinout family.
The 80-pin TQFP (12x12 mm body, 0.5 mm pitch) requires 4-layer PCB with continuous power and ground planes under the package. Fan-out the fine-pitch leads using short dog-bone traces or via-in-pad to inner layers. Maintain at least 8 mil trace/space and 4 mil annular rings for reflow-yield; the package's lead coplanarity is 0.10 mm typical. Mount the MCLR pull-up resistor within 5 mm of pin 9 to avoid spurious resets from switching noise.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Lead-free matte-tin finish. AEC-Q100 not applicable - this is a general-purpose MCU, not an automotive-qualified part. NRND status as of 2026-09-26 - last-time-buy planning recommended.
