PIC17LC766T-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
部品番号: PIC17LC766T-08I/PT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $13.5 | $13.50 |
| 10 | $12.15 | $121.50 |
| 100 | $10.8 | $1,080.00 |
| 500 | $9.72 | $4,860.00 |
| 1,000 | $8.78 | $8,780.00 |
PIC17LC766T-08I/PT 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable peripherals. The PIC17C family sits at the high end of Microchip's classic 8-bit portfolio, pairing RISC instruction-set efficiency with 16-bit-wide program memory to deliver compact code density and deterministic execution. PIC17C MCUs are typically deployed in industrial control, instrumentation, and embedded designs that demand more compute, memory, and I/O than entry-level PIC16 devices can provide.
Key features of the PIC17LC766T-08I/PT include 33 digital I/O lines, an 8 MHz oscillator yielding 121 ns single-cycle instruction execution, 58 single-word instructions, hardware multipliers, multiple timer/counter modules, and a synchronous serial port. The OTP program memory supports one-time field programming, while the TQFP-80 footprint exposes the full peripheral set including external interrupt, capture/compare/PWM, and USART interfaces. The wide 3.0–5.5 V supply tolerance simplifies mixed-voltage system design.
Architecturally, the PIC17C766 core is a Harvard-style design with separated program and data buses, an 8-level hardware stack, and direct interrupt handling. The OTP program array is 16 bits wide, which doubles code density relative to 14-bit PIC16 devices. Operating at 8 MHz, most instructions complete in a single 121 ns cycle; program branches and table reads/writes require two cycles. This deterministic timing makes the PIC17LC766T-08I/PT well suited to real-time control loops where predictable latency matters more than raw throughput.
Typical applications include industrial automation controllers, instrumentation front-ends, motor control peripherals, embedded sensor hubs, white-goods control boards, and legacy 5 V factory equipment retrofits. The 32 KB OTP allows substantial application logic, state machines, and protocol stacks to be stored on-chip.
When designing with this part, note that OTP memory cannot be re-programmed, so choose this variant for production; consider the JW (windowed) or QTP/SQTP equivalents for prototyping. The TQFP-80 footprint requires careful PCB thermal and signal-integrity planning for the high-pin-count interface.
This page consolidates distributor pricing, pin-compatible alternatives, application guidance, and design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: PIC17LC766T-08I/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: PIC17LC766T-08I/PT （同一形状・フットプリント） — 相違点: Package, Core Architecture, Operating Temperature, Program Memory Size, ADC.
クイック比較ツール — 並列比較する代替部品を選択:
PIC17LC766-08I/PT
✅ ドロップイン✓ 在庫あり
$11.5 / 個
データシートを見る →PIC17LC766-08I/L
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$10.85 / 個
データシートを見る →PIC17LC766T-08/L
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$9.85 / 個
データシートを見る →PIC17LC766-08/PT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC17LC762-08I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$7.4 / 個
データシートを見る →PIC17C766-16I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$11.5 / 個
データシートを見る →PIC17LC766T-08I/PT 最大定格＆電気的特性
| Core Architecture | PIC17C, 8-bit RISC |
| Instruction Set Width | 16-bit (program memory) |
| Number of Instructions | 58 single-word instructions |
| Maximum Clock Speed | 8 MHz |
| Instruction Cycle Time | 121 ns (single-cycle) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Data EEPROM | Not specified (no on-chip EEPROM listed) |
| I/O Pins | 33 |
| Supply Voltage (Vdd) | 3.0 V to 5.5 V |
| 動作温度 | -40 °C to +85 °C (Industrial) |
| パッケージ | 80-TQFP (12x12 mm) |
| 実装タイプ | Surface Mount |
| ピン数 | 80 |
| Packaging | Tape & Reel |
| RoHS ステータス | Compliant (per Microchip product page) |
PIC17LC766T-08I/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/AN4 — PORTA bit 4 / Analog input 4 |
| ピン 6 | RA5/AN5 — PORTA bit 5 / Analog input 5 |
| ピン 7 | RA7 — PORTA bit 7 |
| ピン 8 | RA6 — PORTA bit 6 |
| ピン 9 | OSC1 — Crystal oscillator input |
| ピン 10 | OSC2 — Crystal oscillator output |
| ピン 11 | MCLR — Master clear (reset) input |
| ピン 12 | VSS — Ground |
| ピン 13 | VDD — Positive supply |
| ピン 14 | VSS — Ground |
| ピン 15 | VDD — Positive supply |
| ピン 16 | RB0/INT — PORTB bit 0 / External interrupt |
| ピン 17 | RB1 — PORTB bit 1 |
| ピン 18 | RB2 — PORTB bit 2 |
| ピン 19 | RB3 — PORTB bit 3 |
| ピン 20 | RB4 — PORTB bit 4 |
| ピン 21 | RB5 — PORTB bit 5 |
| ピン 22 | RB6 — PORTB bit 6 |
| ピン 23 | RB7 — PORTB bit 7 |
| ピン 24 | RC0 — PORTC bit 0 |
| ピン 25 | RC1 — PORTC bit 1 |
| ピン 26 | RC2 — PORTC bit 2 |
| ピン 27 | RC3 — PORTC bit 3 |
| ピン 28 | RC4 — PORTC bit 4 |
| ピン 29 | RC5 — PORTC bit 5 |
| ピン 30 | RC6 — PORTC bit 6 |
| ピン 31 | RC7 — PORTC bit 7 |
| ピン 32 | VSS — Ground |
| ピン 33 | VDD — Positive supply |
| ピン 34 | RD0 — PORTD bit 0 |
| ピン 35 | RD1 — PORTD bit 1 |
| ピン 36 | RD2 — PORTD bit 2 |
| ピン 37 | RD3 — PORTD bit 3 |
| ピン 38 | RD4 — PORTD bit 4 |
| ピン 39 | RD5 — PORTD bit 5 |
| ピン 40 | RD6 — PORTD bit 6 |
| ピン 41 | RD7 — PORTD bit 7 |
| ピン 42 | VSS — Ground |
| ピン 43 | VDD — Positive supply |
| ピン 44 | RE0 — PORTE bit 0 |
| ピン 45 | RE1 — PORTE bit 1 |
| ピン 46 | RE2 — PORTE bit 2 |
| ピン 47 | RE3 — PORTE bit 3 |
| ピン 48 | RE4 — PORTE bit 4 |
| ピン 49 | RE5 — PORTE bit 5 |
| ピン 50 | RE6 — PORTE bit 6 |
| ピン 51 | RE7 — PORTE bit 7 |
| ピン 52 | RF0 — PORTF bit 0 (multiplexed) |
| ピン 53 | RF1 — PORTF bit 1 (multiplexed) |
| ピン 54 | RF2 — PORTF bit 2 (multiplexed) |
| ピン 55 | RF3 — PORTF bit 3 (multiplexed) |
| ピン 56 | RF4 — PORTF bit 4 (multiplexed) |
| ピン 57 | RF5 — PORTF bit 5 (multiplexed) |
| ピン 58 | RF6 — PORTF bit 6 (multiplexed) |
| ピン 59 | RF7 — PORTF bit 7 (multiplexed) |
| ピン 60 | RG0 — PORTG bit 0 |
| ピン 61 | RG1 — PORTG bit 1 |
| ピン 62 | RG2 — PORTG bit 2 |
| ピン 63 | RG3 — PORTG bit 3 |
| ピン 64 | RG4 — PORTG bit 4 |
| ピン 65 | VSS — Ground |
| ピン 66 | VDD — Positive supply |
| ピン 67 | TX/CK — USART transmit / clock line |
| ピン 68 | RX/DT — USART receive / data line |
| ピン 69 | SCK — Synchronous serial clock |
| ピン 70 | SDI — Synchronous serial data in |
| ピン 71 | SDO — Synchronous serial data out |
| ピン 72 | CCP1 — Capture/Compare/PWM channel 1 |
| ピン 73 | CCP2 — Capture/Compare/PWM channel 2 |
| ピン 74 | T0CKI — Timer0 clock input |
| ピン 75 | T1CKI — Timer1 clock input |
| ピン 76 | T2CKI — Timer2 clock input |
| ピン 77 | VSS — Ground |
| ピン 78 | VDD — Positive supply |
| ピン 79 | AVSS — Analog ground |
| ピン 80 | AVDD — Analog positive supply |
主な用途
PIC17LC766T-08I/PT の用途: 6 件s: Industrial Automation Controller, Instrumentation and Metering Front-End, White Goods and Appliance Control, Motor Control Peripherals, Embedded Sensor Hubs, Legacy 5 V Retrofit Designs.
Industrial Automation Controller
The PIC17LC766T-08I/PT suits industrial automation controllers because its 32 KB OTP program memory can host substantial state-machine logic for PLC-style I/O scanning, while its 33 digital I/O lines directly drive sensors, relay coils, and opto-isolated inputs. The deterministic 121 ns single-cycle instruction execution ensures predictable loop timing for PID control, and the -40 °C to +85 °C industrial temperature grade tolerates factory-floor thermal stress. The 3.0–5.5 V supply range accepts both legacy 5 V and modern 3.3 V rails commonly found on PLC backplanes. Compared with entry-level PIC16 parts, the PIC17C766 delivers roughly twice the code density and more interrupts, simplifying real-time response on multi-axis machines.
おすすめ
Instrumentation and Metering Front-End
The PIC17LC766T-08I/PT is a strong fit for instrumentation front-ends where the MCU must read sensors, drive LCD or LED displays, and execute calibration math without external memory. Its 902 bytes of RAM is sufficient for moving-average filters and lookup tables used in temperature, pressure, and flow metering, while the 8 MHz clock delivers 121 ns instruction cycles that allow oversampling for 12–16 bit ADC averaging. The PIC17C core's 16-bit program memory word keeps numerically intensive calibration routines compact, and the 33 I/O lines easily connect to segmented displays, rotary encoders, and isolated UART links. The wide 3.0–5.5 V supply simplifies battery-backed meter designs that share a coin cell and a 5 V analog front-end.
おすすめ
White Goods and Appliance Control
The PIC17LC766T-08I/PT has long been deployed in washing-machine, dishwasher, and oven controllers where reliability under motor noise and temperature extremes is essential. Its -40 °C to +85 °C industrial temperature range tolerates the high-heat environment inside an appliance cabinet, and the 33 I/O lines drive triac interfaces, keypads, and seven-segment displays directly. The 32 KB OTP accommodates full appliance state machines, fault logging, and user-interface logic in a single chip, reducing BOM cost. Compared with newer Flash parts, OTP is actually a security advantage: it prevents reverse-engineering of proprietary wash-cycle algorithms and reduces field reprogramming risk.
おすすめ
Motor Control Peripherals
For brushed-DC and stepper-motor peripheral control, the PIC17LC766T-08I/PT offers on-chip timers and a capture/compare/PWM module that generate accurate switching waveforms at 8 MHz. The 121 ns instruction cycle lets designers run closed-loop commutation algorithms with sub-microsecond jitter, while 33 I/O lines handle Hall-sensor inputs, enable signals, and fault flags. The wide 3.0–5.5 V supply lets the same MCU run from either 24 V industrial bus-derived 5 V or 3.3 V logic, and the industrial temperature grade survives under-hood thermal load. OTP prevents firmware tampering in cost-sensitive drives.
おすすめ
Embedded Sensor Hubs
The PIC17LC766T-08I/PT works well as a multi-sensor hub that aggregates temperature, humidity, and switch inputs over UART, SPI, or I²C links to a host processor. Its 33 I/O lines multiplex several SPI peripherals, while the 8 MHz core services multiple polled sensor channels within tight timing windows. The 902 B RAM buffers short data bursts before relaying them upstream. Industrial temperature tolerance allows outdoor enclosure placement, and the OTP variant reduces the risk of unauthorized firmware replacement in deployed sensor networks.
おすすめ
Legacy 5 V Retrofit Designs
The PIC17LC766T-08I/PT is a favored replacement MCU in 5 V legacy retrofits, including older telecom line cards, industrial test rigs, and military COTS modules that must remain electrically compatible with existing boards. Because the PIC17C family has been in continuous production for decades, Microchip typically guarantees long-term availability, making the LC766 an ideal pin-compatible modern substitute for end-of-life predecessor parts. The 3.0–5.5 V supply tolerance matches 5 V rails directly, and the 80-TQFP footprint allows direct PCB drop-in without re-layout.
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: PIC17LC766T-08I/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 | PIC17LC766-08I/PT | PIC17LC766-08I/L | PIC17LC766T-08/L | PIC17LC766-08/PT | PIC17LC762-08I/PT | PIC17C766-16I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP | 32 KB EPROM |
| Maximum Clock Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 16 MHz |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | OTP | EPROM (windowed) |
| Supply Voltage | 3.0 - 5.5 V | 3.0 - 5.5 V | 3.0 - 5.5 V | 3.0 - 5.5 V | 3.0 - 5.5 V | 3.0 - 5.5 V | 4.5 - 5.5 V |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | 0 °C to +70 °C (Commercial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C | -40 °C to +85 °C |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Packaging Media | Tape & Reel | Tray | Tray | Tape & Reel | Tray | Tray | Tray |
主な差別化要因
- Tape & Reel packaging for high-volume SMT assembly （vs PIC17LC766-08I/PT)
- Industrial temperature grade (-40 °C to +85 °C) （vs PIC17LC766T-08/L)
- Same-family 80-TQFP compatibility across speed grades （vs PIC17C766-16I/PT)
設計ノート
Decouple every Vdd/Vss pair with a 100 nF ceramic capacitor placed within 5 mm of the IC pins, plus a single 10 µF tantalum or aluminum bulk capacitor on the board to handle switching transients from the MCU's PWM and timer outputs. Because the PIC17C core can source/sink 25 mA on individual I/O lines and up to 200 mA total, ensure the regulator has at least 250 mA headroom beyond the rated Vdd current. Keep AVDD and AVSS separated from digital Vdd/Vss with ferrite beads if your design uses ADC channels.
Route the 8 MHz crystal traces (OSC1/OSC2) symmetrically and keep them short, with ground guarding on both sides to avoid coupling noise into the high-impedance oscillator. Place MCLR with a 10 kΩ pull-up and a 100 nF decoupling cap directly at the pin. The 80-TQFP has many ground pins (VSS) — connect them all to a single uninterrupted ground plane to minimize ground bounce during high-current switching. Avoid running noisy switching traces beneath the IC's analog PORTA pins.
OTP memory cannot be re-programmed, so verify your hex file thoroughly on a windowed PIC17C766-16I/PT prototype before committing production runs. Do not exceed the absolute maximum Vdd of 6.5 V even momentarily, because the LC variant has lower voltage tolerance than the standard PIC17C766. Ensure your programmer supports the PIC17C device ID (0x0B2x) and the proper high-voltage entry sequence, or programming will fail silently. Finally, remember that branches and table reads/writes take 2 cycles, not 1 — account for this when computing instruction timing loops.
コンプライアンス情報
RoHS and Pb-free compliant per Microchip product page; not AEC-Q100 qualified — choose PIC17C766 automotive variants for vehicular applications.
