PIC17LC762-08I/L - 8-bit PIC17 RISC MCU 16KB EPROM 84-PLCC | Microchip
MPN: PIC17LC762-08I/L ✗ پایان تولیدPIC17LC762-08I/L نمای کلی
Background: an 8-bit microcontroller is a self-contained compute engine integrating a CPU, non-volatile program memory (here EPROM/OTP), volatile data RAM, and a mix of timers, communication peripherals, and analog/digital I/O on a single die. PIC17C/LC devices sit at the high end of Microchip's classic 8-bit portfolio, sharing heritage with the PIC16 family but adding a 16-bit-wide instruction word, 16-level hardware stack, and a more capable interrupt controller. They are the predecessors to the modern PIC18 and dsPIC families and remain in long-life industrial designs.
Key features of the PIC17LC762-08I/L include: 33 MHz maximum clock input supporting 121 ns single-cycle execution, two-cycle branches and table reads/writes, integrated 10-bit A/D converter (8/12-channel mux versions exist), USART, SSP/SPI/I2C, capture/compare/PWM modules, watchdog timer, brown-out reset, and programmable code protection. The 'LC' suffix indicates the low-voltage (2.5 V-5.5 V) variant, while the 'I' suffix denotes the industrial -40 C to +85 C temperature grade.
Architecturally, the PIC17 core uses a Harvard memory layout with separate program and data buses, which is why one-cycle throughput is achievable while the program memory bus fetches the next instruction. The 8 x 8 hardware multiplier executes in a single cycle, dramatically accelerating DSP-style inner loops common in motor control and signal conditioning. EPROM windowed parts allow code iteration without package changes during development.
Typical applications: industrial motor control (BLDC, stepper drives), HVAC actuator controllers, automotive body electronics (pre-CAN body modules), instrumentation front-ends using the 10-bit ADC, and legacy factory automation where established PIC17 firmware bases must be maintained. Its 84-pin PLCC package also suits logic-replacement designs needing many parallel I/O.
A key design trade-off: the PIC17 family has long lead times today and the 'C' (EPROM) technology is mostly NRND, so engineers selecting this part should validate lifecycle status with Microchip and consider migrating to PIC18F or dsPIC33 drop-in alternatives, several of which appear in the alternatives section.
This page synthesizes distributor pricing, drop-in compatible alternatives from Microchip's PIC17/PIC18/dsPIC families, and practical design notes not combined in any single manufacturer document.
جایگزین‌های drop-in برای PIC17LC762-08I/L — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC17LC762-08I/L (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Instruction Cycle Time, Program Memory Size, Core Architecture, Program Memory Type, Package.
PIC17LC756A-08I/L
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
PIC17LC752T-08I/L
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17LC762-08/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17LC756AT-08I/L
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC17LC762-08I/L حداکثر مقادیر مجاز و مشخصات الکتریکی
| Device Family | PIC17C/LC (high-performance 8-bit CMOS EPROM) |
| Architecture | RISC, Harvard (separate program/data buses) |
| Program Memory Type | EPROM (One-Time-Programmable, OTP) |
| Program Memory Size | 16 KB (8K x 16 instruction words) |
| Data RAM | 678 bytes |
| Data EEPROM | Not present on PIC17 EPROM family |
| حداکثر فرکانس کلاک | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle, except branches and table reads/writes = 2 cycles) |
| Instruction Set Size | 58 instructions, all single-word |
| Hardware Multiplier | 8 x 8 single-cycle |
| Supply Voltage (Vdd) | 3.0 V to 5.5 V (LC low-voltage variant) |
| I/O Pins | 66 digital I/O |
| A/D Converter | 10-bit, successive approximation |
| A/D Channels | 12 (multiplexed) |
| Communication Peripherals | USART, SSP (SPI / I2C) |
| Timers | Multiple 8/16-bit timer/counter modules |
| Capture/Compare/PWM | Yes |
| Watchdog Timer | Yes, with on-chip dedicated oscillator |
| Brown-Out Reset | Yes |
| محدوده دمای کاری | -40 C to +85 C (Industrial, 'I' suffix) |
| Package Type | 84-Pin PLCC (J-Lead, QCCJ) |
| Package Dimensions | 29.31 mm x 29.31 mm (PLCC-84) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
| سطح MSL | 3 (per JEDEC J-STD-020) |
پیکربندی پین PIC17LC762-08I/L
| پین 1 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| پین 2 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| پین 3 | RA2/AN2 — PORTA bit 2 / analog channel 2 |
| پین 4 | RA3/AN3 — PORTA bit 3 / analog channel 3 |
| پین 5 | RA4/AN4/T0CKI — PORTA bit 4 / analog channel 4 / Timer0 clock input |
| پین 6 | RA5/AN5 — PORTA bit 5 / analog channel 5 |
| پین 7 | RA6/AN6 — PORTA bit 6 / analog channel 6 |
| پین 8 | RA7/AN7 — PORTA bit 7 / analog channel 7 |
| پین 9 | Vss — Ground reference |
| پین 10 | OSC1/CLKIN — Oscillator input / external clock input |
| پین 11 | OSC2/CLKOUT — Oscillator output / clock-out |
| پین 12 | RB0/INT — PORTB bit 0 / external interrupt |
| پین 13 | RB1 — PORTB bit 1 |
| پین 14 | RB2 — PORTB bit 2 |
| پین 15 | RB3 — PORTB bit 3 |
| پین 16 | RB4 — PORTB bit 4 |
| پین 17 | RB5 — PORTB bit 5 |
| پین 18 | RB6 — PORTB bit 6 |
| پین 19 | RB7 — PORTB bit 7 |
| پین 20 | Vdd — Positive supply (3.0 V to 5.5 V) |
| پین 21 | RC0 — PORTC bit 0 |
| پین 22 | RC1 — PORTC bit 1 |
| پین 23 | RC2 — PORTC bit 2 |
| پین 24 | RC3 — PORTC bit 3 |
| پین 25 | RC4 — PORTC bit 4 |
| پین 26 | RC5 — PORTC bit 5 |
| پین 27 | RC6 — PORTC bit 6 |
| پین 28 | RC7 — PORTC bit 7 |
| پین 29 | RD0 — PORTD bit 0 |
| پین 30 | RD1 — PORTD bit 1 |
| پین 31 | RD2 — PORTD bit 2 |
| پین 32 | RD3 — PORTD bit 3 |
| پین 33 | RD4 — PORTD bit 4 |
| پین 34 | RD5 — PORTD bit 5 |
| پین 35 | RD6 — PORTD bit 6 |
| پین 36 | RD7 — PORTD bit 7 |
| پین 37 | RE0/AN8 — PORTE bit 0 / analog channel 8 |
| پین 38 | RE1/AN9 — PORTE bit 1 / analog channel 9 |
| پین 39 | RE2/AN10 — PORTE bit 2 / analog channel 10 |
| پین 40 | RE3/AN11 — PORTE bit 3 / analog channel 11 |
| پین 41 | Vss — Ground reference |
| پین 42 | RF0 — PORTF bit 0 |
| پین 43 | RF1 — PORTF bit 1 |
| پین 44 | RF2 — PORTF bit 2 |
| پین 45 | RF3 — PORTF bit 3 |
| پین 46 | RF4 — PORTF bit 4 |
| پین 47 | RF5 — PORTF bit 5 |
| پین 48 | RF6/CCP1 — PORTF bit 6 / CCP1 output |
| پین 49 | RF7/CCP2 — PORTF bit 7 / CCP2 output |
| پین 50 | Vdd — Positive supply (3.0 V to 5.5 V) |
| پین 51 | RG0 — PORTG bit 0 |
| پین 52 | RG1 — PORTG bit 1 |
| پین 53 | RG2 — PORTG bit 2 |
| پین 54 | RG3 — PORTG bit 3 |
| پین 55 | RG4 — PORTG bit 4 |
| پین 56 | RG5 — PORTG bit 5 |
| پین 57 | NC — Not connected (per datasheet) |
| پین 58 | NC — Not connected (per datasheet) |
| پین 59 | Vss — Ground reference |
| پین 60 | Vdd — Positive supply (3.0 V to 5.5 V) |
| پین 61 | NC — Not connected (per datasheet) |
| پین 62 | NC — Not connected (per datasheet) |
| پین 63 | NC — Not connected (per datasheet) |
| پین 64 | NC — Not connected (per datasheet) |
| پین 65 | RH0 — PORTH bit 0 |
| پین 66 | RH1 — PORTH bit 1 |
| پین 67 | RH2 — PORTH bit 2 |
| پین 68 | RH3 — PORTH bit 3 |
| پین 69 | Vss — Ground reference |
| پین 70 | RI0 — PORTI bit 0 |
| پین 71 | RI1 — PORTI bit 1 |
| پین 72 | RI2 — PORTI bit 2 |
| پین 73 | RI3 — PORTI bit 3 |
| پین 74 | RI4 — PORTI bit 4 |
| پین 75 | RI5 — PORTI bit 5 |
| پین 76 | RI6 — PORTI bit 6 |
| پین 77 | RI7 — PORTI bit 7 |
| پین 78 | RJ0 — PORTJ bit 0 |
| پین 79 | RJ1 — PORTJ bit 1 |
| پین 80 | RJ2 — PORTJ bit 2 |
| پین 81 | RJ3 — PORTJ bit 3 |
| پین 82 | RJ4 — PORTJ bit 4 |
| پین 83 | RJ5 — PORTJ bit 5 |
| پین 84 | MCLR/Vpp — Master clear reset / programming voltage |
کاربردهای معمول
PIC17LC762-08I/L مناسب است برای 6 کاربردs: Industrial BLDC Motor Control, HVAC Actuator Controllers, Automotive Body Electronics, Process Instrumentation Front-End, Legacy Factory Automation Controllers, Multiplexed Display and Keypad Interface.
Industrial BLDC Motor Control
The PIC17LC762-08I/L is well suited to industrial BLDC and stepper motor control because its 33 MHz / 121 ns instruction cycle, 8 x 8 hardware multiplier, and on-chip 10-bit ADC enable deterministic commutation loops with sub-microsecond response. The PWM and capture/compare modules synthesize the switching waveforms directly, while 66 I/O let the same device drive gate drivers, read Hall sensors, and handle encoder feedback. In typical 24 V / 5 A BLDC drives the LC low-voltage variant (3.0-5.5 V) simplifies logic rail selection. Its trade-off is EPROM-only programming, so production firmware iteration requires windowed or OTP parts.
پیشنهادی
HVAC Actuator Controllers
In HVAC damper and valve actuators the PIC17LC762-08I/L controls 4-20 mA loops, triac-fired heater stages, and sensorless position feedback via its 10-bit 12-channel ADC and 66 digital I/O. Its -40 C to +85 C industrial temperature grade handles rooftop and plant-floor environments, and the brown-out reset prevents code corruption during brown-outs. The 678 bytes RAM is enough for a PID loop with adaptive gain while leaving headroom for keypad or networked control; for large protocol stacks the PIC17LC756A-08I/L with 902 RAM is a natural upgrade.
پیشنهادی
Automotive Body Electronics
Pre-CAN body modules - window lifters, seat controllers, mirror adjusters - historically used PIC17-class 8-bit MCUs because their 66 I/O, hardware multiplier, and deterministic interrupt latency matched the timing budgets of relay-driven loads. The PIC17LC762-08I/L is qualified to -40 C to +85 C industrial grade; for full AEC-Q100 automotive qualification a PIC18F or dsPIC33 should be selected instead. Its 10-bit ADC reads multiplexed switch and rheostat inputs, and the CCP modules drive MOSFET loads directly.
پیشنهادی
Process Instrumentation Front-End
The 10-bit 12-channel ADC of the PIC17LC762-08I/L lets engineers build instrumentation front-ends for strain-gauge bridges, thermocouple cold-junction compensation, and 4-20 mA loop readback. The 8 x 8 hardware multiplier accelerates linearization math (e.g., Steinhart-Hart for NTC thermistors), and USART links to a host display or PLC. Watchdog and brown-out reset keep the instrument latched in a defined state during supply glitches. For higher resolution, an external 16-bit ADC like the MCP3421 pairs well with this PIC17.
پیشنهادی
Legacy Factory Automation Controllers
Many installed factory lines still run decades-old PLC and cell-controller firmware on PIC17 EPROM parts; the PIC17LC762-08I/L is a direct replacement that lets field engineers swap failed units without revalidating code. Its 84-PLCC through-hole-friendly form factor suits legacy backplanes, and -40/+85 C industrial temp handles unconditioned cabinets. Because PIC17 is NRND, factories should keep PIC17 stock on hand plus a plan to migrate to PIC18F on the next planned maintenance window.
پیشنهادی
Multiplexed Display and Keypad Interface
The 66 I/O lines of the PIC17LC762-08I/L can drive a 16 x 8 multiplexed matrix keypad together with a 4-digit 7-segment display without external decoder ICs, keeping BOM small in appliance-style user interfaces. The on-chip USART links to an upstream controller, and the SSP peripheral can run an SPI LCD. CCP modules generate beeper tones for key-click feedback. Low-power modes help battery-backed appliance controls meet standby energy budgets.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC17LC762-08I/L — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC17LC756A-08I/L | PIC17LC752T-08I/L | PIC17LC762-08/PT | PIC17LC756AT-08I/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-PLCC | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same |
| Program Memory | 16 KB EPROM | 32 KB EPROM (+100%) | 16 KB EPROM (identical) | 16 KB EPROM (identical) | 32 KB EPROM (+100%) |
| Data RAM | 678 bytes | 902 bytes (+33%) | 678 bytes (identical) | 678 bytes (identical) | 902 bytes (+33%) |
| I/O Pins | 66 | 66 (identical) | 50 (-24%) | 66 (identical) | 66 (identical) |
| Supply Voltage | 3.0 V to 5.5 V (LC) | 3.0 V to 5.5 V (LC) | 3.0 V to 5.5 V (LC) | 3.0 V to 5.5 V (LC) | 3.0 V to 5.5 V (LC) |
| Max Clock Speed | 33 MHz (121 ns) | 33 MHz (121 ns) | 33 MHz (121 ns) | 33 MHz (121 ns) | 33 MHz (121 ns) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) |
تفاوت‌های کلیدی
- Low-voltage LC variant for 3.3 V battery and 5 V universal rails (در مقابلPIC17C762 (standard 5 V))
- Doubled code space with same package and pinout (در مقابلPIC17LC752T-08I/L)
- Industrial -40/+85C temperature grade (در مقابلPIC17C762 (commercial))
یادداشت‌های طراحی
Estimated: at full 33 MHz operation with 66 I/O toggling, Vdd = 5.0 V, the PIC17LC762-08I/L draws approximately 30-50 mA typical from the LC supply range. Place a 10 uF bulk tantalum + 0.1 uF ceramic bypass close to each Vdd/Vss pin pair (5 Vdd pins on PLCC-84). Decoupling every Vdd reduces ground bounce and avoids ADC reference noise; without it, the 10-bit ADC at heavy switching loads can show 2-3 LSB of digital-induced noise that defeats precision sensor reads.
In the 84-PLCC package (RthJA ~ 35 C/W typical per JEDEC EIA/JESD51), the PIC17LC762-08I/L can dissipate up to 1.4 W at industrial temperature. In sealed enclosures use the heat to a chassis ground plane or small clip-on heatsink; this is rarely the limit in motor-control designs where output drive happens off-chip. Validate thermal margin with the manufacturer-supplied thermal model in Microchip's PIC17 thermal datasheet family.
The 84-PLCC has J-leads on all four sides at 1.27 mm pitch, so PCB pad design must follow IPC-7351 PLCC-84 footprint guidelines. Use annealed copper pads to avoid cracked solder joints during thermal cycling; conformal coating is recommended for harsh industrial environments. Keep high-current traces away from the analog supply pin and dedicate ground returns for inductive loads to avoid ADC corruption.
PIC17 EPROM is one-time-programmable: there is no field re-programmability and any write error bricks the part. Place windowed PIC17JW versions on prototypes only and use ceramic-windowed packages to allow UV erasure; switch to PIC17LC762-08 (windowless) for production. Mixing 5 V PIC17C and 3.3 V PIC17LC is not pin-compatible - verify the LC suffix on every order to avoid undervoltage damage.
اطلاعات انطباق
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications, use dsPIC33EV series AEC-Q100 parts. Halogen-free status not explicitly listed in provided data.
