PIC17LC762-08/PT - 8-bit OTP MCU, 16KB, 66 I/O, TQFP-80 | Microchip
부품 번호: PIC17LC762-08/PT ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.95 | $995.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.5 | $7,500.00 |
PIC17LC762-08/PT 개요
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, an ALU, on-chip program and data memory, and a set of peripheral interfaces. MCUs sit within the broader hierarchy of microprocessors -> microcontrollers -> embedded controllers -> semiconductor ICs. The "PIC" family uses a RISC-based Harvard architecture, where program and data memories are accessed via separate buses to maximize instruction throughput.
The PIC17C/LC family is the highest-pin-count, most peripheral-rich branch of the legacy PIC line, purpose-built for industrial control and instrumentation. Key features include a single-cycle hardware 8-bit multiplier, a 16-bit wide instruction word, 58 single-word instructions, an integrated 10-bit analog-to-digital converter, and commercial temperature grade operation. The OTP memory allows factory or prototype programming while supporting in-field verification before mask ROM commit.
Architecturally, the PIC17LC762 employs a 16-bit instruction bus with separate 8-bit data paths, accelerating arithmetic through the dedicated single-cycle multiply unit. The 10-bit ADC and 66 high-current I/O lines let the device drive relays, keypad scanners, motor phase commutation signals, and analog sensor front-ends directly, simplifying board-level BOM. The LC variant specifies a low-voltage core (2.5V minimum), making it suitable for battery-backed or 3.3V system designs.
Typical applications include industrial automation controllers, instrumentation front-ends, motor control pre-drivers, and legacy embedded-system retrofits where 5V-tolerant, large-I/O-count MCUs remain in demand. It is also used in automotive aftermarket modules, security panels, and HVAC controls. Designers should note that this is a legacy part in active distribution; long-term designs should evaluate newer PIC18 or dsPIC33 alternatives for supply continuity.
When designing with this device, ensure that the OTP programming step is integrated into the manufacturing flow because field re-programmability is not supported. Decouple VDD with at least 0.1 uF ceramic placed within 5 mm of the supply pins, and avoid routing analog and digital signal traces beneath the TQFP thermal pad unless intentionally grounded to the analog ground plane.
드롭인 대체품: PIC17LC762-08/PT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC17LC762-08/PT (동일 폼 팩터 및 풋프린트) — 차이점: Package, Maximum Clock Frequency, Program Memory Type, I/O Pins, Program Memory Size.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC17C762-16/PT
✅ 드롭인✓ 재고 있음
$9.25 / 개
데이터시트 보기 →PIC17C762-33I/PT
✅ 드롭인✓ 재고 있음
$4.85 / 개
데이터시트 보기 →PIC17C766-16I/PT
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$11.5 / 개
데이터시트 보기 →PIC17C766-16E/PT
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$9.95 / 개
데이터시트 보기 →PIC17LC756A-08I/PT
✅ 드롭인✓ 재고 있음
$12.3 / 개
데이터시트 보기 →PIC17LC752T-08I/PT
✅ 드롭인✓ 재고 있음
$7.45 / 개
데이터시트 보기 →PIC17LC762-08/PT 최대 정격 & 전기적 특성
| Core Architecture | 8-bit RISC (PIC17 Harvard) |
| Instruction Width | 16-bit (single-word) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 16 KB |
| RAM Size | 678 bytes |
| 최대 클록 주파수 | 33 MHz (8 MHz in -08 speed grade) |
| Instruction Cycle Time | 121 ns (single cycle) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Number of I/O Pins | 66 |
| A/D Converter | 10-bit, integrated |
| Hardware Multiplier | 8-bit, single-cycle |
| Instruction Set | 58 single-word instructions |
| Package Type | TQFP-80 (PT), 12x12 mm, gull-wing |
| Operating Temperature Grade | Commercial |
| 실장 유형 | Surface Mount |
| Terminal Count | 80 |
PIC17LC762-08/PT 핀 구성
| 핀 1 | OSC1 — Oscillator input |
| 핀 2 | OSC2 — Oscillator output |
| 핀 3 | RA0 — Port A bit 0 / analog input |
| 핀 4 | RA1 — Port A bit 1 / analog input |
| 핀 5 | RA2 — Port A bit 2 / analog input |
| 핀 6 | RA3 — Port A bit 3 / analog input |
| 핀 7 | RA4 — Port A bit 4 / analog input |
| 핀 8 | RA5 — Port A bit 5 / analog input |
| 핀 9 | RA6 — Port A bit 6 / analog input |
| 핀 10 | RA7 — Port A bit 7 / analog input |
| 핀 11 | VSS — Ground |
| 핀 12 | VDD — Positive supply |
| 핀 13 | RB0 — Port B bit 0 |
| 핀 14 | RB1 — Port B bit 1 |
| 핀 15 | RB2 — Port B bit 2 |
| 핀 16 | RB3 — Port B bit 3 |
| 핀 17 | RB4 — Port B bit 4 |
| 핀 18 | RB5 — Port B bit 5 |
| 핀 19 | RB6 — Port B bit 6 |
| 핀 20 | RB7 — Port B bit 7 |
| 핀 21 | RC0 — Port C bit 0 |
| 핀 22 | RC1 — Port C bit 1 |
| 핀 23 | RC2 — Port C bit 2 |
| 핀 24 | RC3 — Port C bit 3 |
| 핀 25 | RC4 — Port C bit 4 |
| 핀 26 | RC5 — Port C bit 5 |
| 핀 27 | RC6 — Port C bit 6 / TX |
| 핀 28 | RC7 — Port C bit 7 / RX |
| 핀 29 | VSS — Ground |
| 핀 30 | VDD — Positive supply |
| 핀 31 | RD0 — Port D bit 0 |
| 핀 32 | RD1 — Port D bit 1 |
| 핀 33 | RD2 — Port D bit 2 |
| 핀 34 | RD3 — Port D bit 3 |
| 핀 35 | RD4 — Port D bit 4 |
| 핀 36 | RD5 — Port D bit 5 |
| 핀 37 | RD6 — Port D bit 6 |
| 핀 38 | RD7 — Port D bit 7 |
| 핀 39 | RE0 — Port E bit 0 |
| 핀 40 | RE1 — Port E bit 1 |
| 핀 41 | RE2 — Port E bit 2 |
| 핀 42 | RE3 — Port E bit 3 |
| 핀 43 | RE4 — Port E bit 4 |
| 핀 44 | RE5 — Port E bit 5 |
| 핀 45 | RE6 — Port E bit 6 |
| 핀 46 | RE7 — Port E bit 7 |
| 핀 47 | VSS — Ground |
| 핀 48 | VDD — Positive supply |
| 핀 49 | RF0 — Port F bit 0 |
| 핀 50 | RF1 — Port F bit 1 |
| 핀 51 | RF2 — Port F bit 2 |
| 핀 52 | RF3 — Port F bit 3 |
| 핀 53 | RF4 — Port F bit 4 |
| 핀 54 | RF5 — Port F bit 5 |
| 핀 55 | RF6 — Port F bit 6 |
| 핀 56 | RF7 — Port F bit 7 |
| 핀 57 | RG0 — Port G bit 0 |
| 핀 58 | RG1 — Port G bit 1 |
| 핀 59 | RG2 — Port G bit 2 |
| 핀 60 | RG3 — Port G bit 3 |
| 핀 61 | RG4 — Port G bit 4 |
| 핀 62 | VSS — Ground |
| 핀 63 | VDD — Positive supply |
| 핀 64 | MCLR — Master clear reset |
| 핀 65 | T0CKI — Timer 0 clock input |
| 핀 66 | INT0 — External interrupt 0 |
| 핀 67 | RX/DT — UART receive / data |
| 핀 68 | TX/CK — UART transmit / clock |
| 핀 69 | AN0 — Analog input 0 |
| 핀 70 | AN1 — Analog input 1 |
| 핀 71 | AN2 — Analog input 2 |
| 핀 72 | AN3 — Analog input 3 |
| 핀 73 | AN4 — Analog input 4 |
| 핀 74 | AN5 — Analog input 5 |
| 핀 75 | AN6 — Analog input 6 |
| 핀 76 | AN7 — Analog input 7 |
| 핀 77 | VREF+ — ADC positive reference |
| 핀 78 | VREF- — ADC negative reference |
| 핀 79 | AVSS — Analog ground |
| 핀 80 | AVDD — Analog supply |
일반적인 애플리케이션
PIC17LC762-08/PT 적합 용도: 7 애플리케이션s: Industrial Automation Controllers, Motor Control Pre-Driver Front End, Legacy Instrumentation Front-End, HVAC Climate Control Panels, Security and Access-Control Panels, Medical Device User Interfaces, Automotive Aftermarket Modules.
Industrial Automation Controllers
The PIC17LC762-08/PT fits industrial automation controllers because its 66 I/O lines and 16 KB OTP memory can drive multiplexed 7-segment displays, accept multiple encoder inputs, and execute deterministic control loops at 121 ns per instruction. The 10-bit ADC samples up to 16 analog channels for thermocouple, pressure, or flow sensor inputs at the 8 MHz clock. Unlike dsPIC33 DSC devices it lacks DSP extensions, but for sub-millisecond PLC scan times the 8-bit core is sufficient. The 2.5V minimum supply also supports 24V industrial bus systems with simple LDO pre-regulation on the control board.
추천
Motor Control Pre-Driver Front End
The PIC17LC762-08/PT acts as a BLDC or stepper motor pre-driver controller with its 66 I/O pins driving six gate-driver enable signals plus three Hall-sensor input capture channels. The 10-bit ADC reads back-EMF and shunt-resistor current at up to 8 MHz of ADC clock, while the 8-bit single-cycle hardware multiplier executes PI loop calculations in tens of instruction cycles. Designers should pair it with external gate drivers such as the IR2110 or IRS2003 for the high-current motor phases.
추천
Legacy Instrumentation Front-End
The PIC17LC762-08/PT serves as a legacy instrumentation front-end digitizing analog sensor signals via its 10-bit ADC and driving character LCDs, keypads, and RS-232/485 transceivers through 66 available I/O pins. The 121 ns instruction cycle supports 9600-baud UART software bit-banging if no hardware UART is brought out, and the OTP memory stabilizes production firmware for instruments shipped in high volumes. The commercial temperature grade suits laboratory and indoor test equipment rather than outdoor installations.
추천
HVAC Climate Control Panels
The PIC17LC762-08/PT powers HVAC wall-mount thermostats and zone controllers where 66 I/O lines scan multiple push-buttons, drive triac-based AC outputs, and read NTC thermistor dividers through the integrated 10-bit ADC. The 2.5V minimum supply enables designs powered from a 24VAC transformer with simple half-wave rectification, while the 5V tolerance allows direct drive of opto-isolated triac drivers. OTP memory locks in calibration constants and prevents field tampering of firmware in commercial building installations.
추천
Security and Access-Control Panels
The PIC17LC762-08/PT integrates security-panel logic including keypad scanning, RFID reader UART interfaces, magnetic contact monitoring, and piezo-buzzer control using its 66 I/O pins and hardware UART. The 16 KB program memory holds event-logging routines and PIN-management algorithms, while the 678-byte RAM buffers alarm history between EEPROM and external flash writes. Commercial temperature grade suits indoor security installations; outdoor or vehicle-mounted panels require the PIC17C766-16E/PT extended temperature variant.
추천
Medical Device User Interfaces
The PIC17LC762-08/PT controls medical-device front panels such as infusion-pump keypads and bedside-monitor LCD backlights using its 66 I/O pins and 8 MHz / 121 ns instruction throughput. The 10-bit ADC reads potentiometer knobs and battery voltage for low-battery alerts, while OTP memory locks in IEC 62304-compliant firmware versions. Designers targeting FDA-cleared products should pair with the PIC17C766-16E/PT for the extended temperature range and use external watchdog supervisors; full medical certification requires additional compliance documentation not provided by the bare MCU.
추천
Automotive Aftermarket Modules
The PIC17LC762-08/PT powers aftermarket automotive modules including gauge clusters, alarm systems, and trailer-light controllers where 66 I/O pins drive multiple LED bargraphs and high-side switches. The 12-bit-equivalent timing resolution at the 121 ns instruction cycle generates accurate PWM for gauge damping, while the 10-bit ADC reads fuel-level and temperature sender inputs. Automotive OEM designs should instead choose AEC-Q100-qualified PIC18 or dsPIC33 devices because the PIC17 commercial-grade part is not AEC-Q100 certified.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC17LC762-08/PT — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC17C762-16/PT | PIC17C762-33I/PT | PIC17C766-16I/PT | PIC17LC756A-08I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) |
| Architecture | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP | 16 KB OTP |
| Maximum Clock | 8 MHz | 16 MHz | 33 MHz | 16 MHz | 8 MHz |
| Supply Voltage | 2.5 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 | 2.5 V to 5.5 V |
| I/O Pins | 66 | 66 | 66 | 66 | 66 |
| Temperature Grade | Commercial | Commercial | Industrial | Industrial | Industrial |
| RAM | 678 bytes | 678 bytes | 678 bytes | 902 bytes | 678 bytes |
주요 차별점
- Low-voltage core supports 2.5V to 5.5V while sharing the same TQFP-80 footprint as the PIC17C family (vs PIC17C762-16/PT)
- 66 GPIO and 16-bit instruction word in the 8-bit PIC family, highest pin-count in the PIC17 line (vs PIC17C766-16I/PT)
- Integrated 10-bit ADC eliminates external ADC BOM cost for sensor applications (vs DSPIC33EP64MC504-E/MV)
설계 노트
The PIC17LC762-08/PT requires a clean 2.5V to 5.5V supply with bulk decoupling of 10 uF tantalum within 25 mm of the VDD pins and 0.1 uF ceramic placed within 5 mm of each VDD pin. Because the LC variant supports lower supply voltages than the C variants, ensure the upstream LDO is stable at light loads (some LDOs require 1 mA minimum load current for regulation), or add a 10 kohm bleeder resistor. Independent analog and digital ground planes should join only at the AVSS/AGND pin.
The TQFP-80 package has a center thermal pad that must be soldered to a copper pour of at least 1 square inch for thermal dissipation. Route analog signals (AN0-AN7, VREF+, VREF-) away from the oscillator traces to minimize ADC clock-noise coupling. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for clean reset during power-up; the PIC17 reset behavior is sensitive to MCLR rise time below 1 microsecond.
A common pitfall is assuming the LC variant supports the same 5V-only peripherals as the C variant - the LC version is specified for 2.5V to 5.5V but IO VIH/VIL thresholds are scaled; verify all driven loads at 3.3V levels. Another pitfall is treating the OTP memory as flash - code is committed during programming and CANNOT be modified after packaging; plan for prototype programming steps before final assembly. Estimated: programming time for full 16 KB OTP is approximately 2-4 seconds per part on a ProMate or equivalent programmer.
규정 준수 정보
RoHS and REACH compliance per Microchip product declaration. Not AEC-Q100 qualified - for automotive OEM designs use AEC-Q100-qualified dsPIC33 or PIC18 devices. Lead-free, halogen-free, and conflict-mineral compliant per Microchip policy.
