PIC17LC762T-08/L - 8-Bit 8MHz 16KB OTP MCU | Microchip 84-PLCC
MPN: PIC17LC762T-08/L ✗ Cuối đờiPIC17LC762T-08/L Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and integrated peripherals. Within the broader taxonomy, the PIC17LC762 belongs to the 8-bit MCU category (microcontroller -> 8-bit MCU -> RISC MCU -> PIC17C family -> OTP variant), a class that targets cost-sensitive embedded control where deterministic single-cycle execution and rich peripheral integration outweigh the need for higher bit width. The PIC17C line is the highest-performance 8-bit family ever shipped by Microchip, predating the dsPIC/PIC24 transition and intended for math-intensive control loops.
Key features of the PIC17LC762 include 33 digital I/O lines, a 16-channel 10-bit analog-to-digital converter, three on-chip timer/counters, a Capture/Compare/PWM (CCP) module, and a hardware 8-bit multiplier that executes MULWF in a single instruction cycle. Communication peripherals cover I2C (master/slave), SPI (master/slave), and a UART/USART with on-chip baud-rate generator. On-chip reliability features include Brown-Out Detect/Reset (BOR), Power-On Reset (POR), and a Watchdog Timer (WDT) with its own on-chip RC oscillator.
The supply voltage range is 2.5 V to 5.0 V, making the device compatible with both 3.3 V and 5 V system rails. The 'LC' suffix indicates the low-voltage CMOS process variant of the PIC17C762, while the '-08' speed grade designates the 8 MHz maximum clock. The 'T' suffix denotes tape-and-reel packaging, and '/L' identifies the PLCC lead form. The 84-PLCC footprint is JEDEC-standard, allowing socket-mount or hand-solder rework on legacy through-hole boards and SMT adapters.
Typical applications include industrial automation controllers, motor-drive front-end logic (BLDC and stepper), automotive body and chassis subsystems, HVAC control boards, and consumer white-goods user-interface modules. The 16 analog inputs are well-suited to multi-zone sensor aggregation (temperature, pressure, level), while the PWM and capture channels handle closed-loop feedback without an external timer IC.
When designing with the PIC17LC762, pay attention to the OTP memory constraint: firmware must be fully validated in-circuit-emulation (ICE) or one-time-programmable PROM emulator form before final programming, because OTP parts cannot be erased. Use a 0.1 uF decoupling capacitor on each VDD/VSS pair within 5 mm of the pin, and reserve one I/O line as a firmware-revision jumper for production traceability.
This page synthesizes distributor pricing, drop-in Microchip family equivalents, and practical design notes not collected in any single manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC17LC762T-08/L — 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 PIC17LC762T-08/L (cùng hình factor và footprint) — khác nhau ở Instruction Cycle Time, Program Memory Size, Maximum Clock Frequency, A/D Converter, I/O Pins.
PIC17LC762-08I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17LC762-08/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17LC762-08/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762T-33/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17LC762T-08/L Tỷ lệ tối đa & tính chất điện
| Family | PIC17C |
| Core | 8-bit RISC |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 678 x 8 bytes |
| Tần số xung maksimum | 8 MHz |
| Instruction Cycle Time | 121 ns (single-cycle, except branches) |
| Instruction Set Size | 58 single-word instructions |
| Supply Voltage Range | 2.5 V to 5.0 V |
| I/O Pins | 33 |
| ADC | 10-bit, 16 channels |
| Communication Interfaces | I2C, SPI, UART/USART |
| Timers | 3 x 8/16-bit timer/counter |
| PWM / CCP | Capture/Compare/PWM module |
| On-chip Multiplier | 8-bit hardware MULWF, single-cycle |
| Reset / Protection | Brown-Out Reset, Power-On Reset, Watchdog Timer |
| Hộp | 84-PLCC (J-Lead), 29.31 x 29.31 mm |
| Kiểu lắp đặt | Surface Mount (PLCC socket compatible) |
| Nhiệt độ hoạt động | 0 C to +70 C (Commercial) |
Cấu hình chân PIC17LC762T-08/L
| Chân 1 | RA0/AN0 — PORTA bit 0 / ADC analog input 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / ADC analog input 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / ADC analog input 2 |
| Chân 4 | RA3/AN3 — PORTA bit 3 / ADC analog input 3 |
| Chân 5 | RA4/AN4 — PORTA bit 4 / ADC analog input 4 |
| Chân 6 | RA5/AN5 — PORTA bit 5 / ADC analog input 5 |
| Chân 7 | RA6/AN6 — PORTA bit 6 / ADC analog input 6 |
| Chân 8 | RA7/AN7 — PORTA bit 7 / ADC analog input 7 |
| Chân 9 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Chân 10 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Chân 11 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Chân 12 | RB3 — PORTB bit 3 |
| Chân 13 | RB4 — PORTB bit 4 |
| Chân 14 | RB5 — PORTB bit 5 |
| Chân 15 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 16 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 17 | RC0 — PORTC bit 0 |
| Chân 18 | RC1 — PORTC bit 1 |
| Chân 19 | RC2 — PORTC bit 2 |
| Chân 20 | RC3/SCL — PORTC bit 3 / I2C clock |
| Chân 21 | OSC1/CLKI — Crystal oscillator input / external clock |
| Chân 22 | OSC2/CLKO — Crystal oscillator output |
| Chân 23 | RC4/SDA — PORTC bit 4 / I2C data |
| Chân 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 25 | RC6/SDI — PORTC bit 6 / SPI data in |
| Chân 26 | RC7/SCK — PORTC bit 7 / SPI clock |
| Chân 27 | RD0 — PORTD bit 0 |
| Chân 28 | RD1 — PORTD bit 1 |
| Chân 29 | RD2 — PORTD bit 2 |
| Chân 30 | RD3 — PORTD bit 3 |
| Chân 31 | RD4 — PORTD bit 4 |
| Chân 32 | RD5 — PORTD bit 5 |
| Chân 33 | VSS — Ground reference |
| Chân 34 | VDD — Positive supply (2.5 V to 5.0 V) |
| Chân 35 | RD6 — PORTD bit 6 |
| Chân 36 | RD7 — PORTD bit 7 |
| Chân 37 | RE0/AN8 — PORTE bit 0 / ADC analog input 8 |
| Chân 38 | RE1/AN9 — PORTE bit 1 / ADC analog input 9 |
| Chân 39 | RE2/AN10 — PORTE bit 2 / ADC analog input 10 |
| Chân 40 | RE3/AN11 — PORTE bit 3 / ADC analog input 11 |
| Chân 41 | RE4/AN12 — PORTE bit 4 / ADC analog input 12 |
| Chân 42 | RE5/AN13 — PORTE bit 5 / ADC analog input 13 |
| Chân 43 | RE6/AN14 — PORTE bit 6 / ADC analog input 14 |
| Chân 44 | RE7/AN15 — PORTE bit 7 / ADC analog input 15 |
| Chân 45 | RF0 — PORTF bit 0 |
| Chân 46 | RF1 — PORTF bit 1 |
| Chân 47 | RF2 — PORTF bit 2 |
| Chân 48 | RF3 — PORTF bit 3 |
| Chân 49 | RF4 — PORTF bit 4 |
| Chân 50 | RF5 — PORTF bit 5 |
| Chân 51 | RF6 — PORTF bit 6 |
| Chân 52 | RF7 — PORTF bit 7 |
| Chân 53 | RG0 — PORTG bit 0 |
| Chân 54 | RG1 — PORTG bit 1 |
| Chân 55 | RG2 — PORTG bit 2 |
| Chân 56 | RG3 — PORTG bit 3 |
| Chân 57 | RG4 — PORTG bit 4 |
| Chân 58 | VSS — Ground reference (second) |
| Chân 59 | VDD — Positive supply (second) |
| Chân 60 | T0CKI — Timer 0 clock input |
| Chân 61 | T1CKI — Timer 1 clock input |
| Chân 62 | T2CKI — Timer 2 clock input |
| Chân 63 | CCP1 — Capture/Compare/PWM channel 1 |
| Chân 64 | CCP2 — Capture/Compare/PWM channel 2 |
| Chân 65 | TX/CK — UART transmit / clock |
| Chân 66 | RX/DT — UART receive / data |
| Chân 67 | MCLR/VPP — Master clear reset / programming voltage |
| 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) |
| Chân 81 | NC — Not connected (per datasheet) |
| Chân 82 | NC — Not connected (per datasheet) |
| Chân 83 | NC — Not connected (per datasheet) |
| Chân 84 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17LC762T-08/L phù hợp cho 6 Áp dụngs: Industrial Motor Control Front-End, HVAC Multi-Zone Sensor Aggregation, Automotive Body and Chassis Controller, White-Goods User Interface Board, POS Terminal and Vending Controller, Industrial Process Controller (PID Loop).
Industrial Motor Control Front-End
The PIC17LC762T-08/L's 16-channel 10-bit ADC, three timer/counters, and CCP/PWM module make it a strong fit for industrial motor-control front-ends driving 3-phase BLDC or stepper stages. The on-chip 8-bit hardware MULFW executes closed-loop PI calculations in a single 121 ns cycle, enabling 4 MIPS sustained control throughput at the 8 MHz oscillator. Designers pair it with external gate drivers (e.g., IR2104) for low-side switching or with an FAN7382 for high-side bootstrap drive; the 33 I/O lines comfortably accommodate Hall-sensor inputs, fault flags, and an RS-485 comm link to a PLC. The 2.5-5.0 V supply range lets the same firmware serve both 3.3 V and 5 V motion boards.
Được đề xuất
HVAC Multi-Zone Sensor Aggregation
With 16 analog inputs and a single 10-bit ADC, the PIC17LC762T-08/L can directly aggregate temperature, humidity, and pressure sensors across multiple HVAC zones without an external analog multiplexer. Its 2.5-5.0 V supply range supports ratiometric 3.3 V sensor bridges and legacy 5 V thermostats in the same board. The 33 I/O lines drive triac-fired damper actuators and seven-segment displays, while the I2C master port links to a downstream CO2 sensor. Single-cycle 121 ns instructions let the firmware scan all 16 channels and update the PWM output within a 1 ms control period, leaving ample margin for display refresh.
Được đề xuất
Automotive Body and Chassis Controller
The PIC17LC762T-08/L is widely used in automotive body controllers (window lift, mirror adjust, central locking) and chassis subsystems where its 8-bit PIC17C core, hardware MULFW, and 16-channel ADC deliver deterministic real-time response. The Brown-Out Reset and Watchdog Timer provide the failsafe behavior required for ISO 26262-adjacent subsystems, and the on-chip UART supports 9-bit LIN-bus master operation for body-control networks. For new designs Microchip directs customers to dsPIC33E (e.g., DSPIC33EV256GM106), which is supported by the same MPLAB X toolchain and offers 5 V operation with automotive AEC-Q100 qualification.
Được đề xuất
White-Goods User Interface Board
Washing machines, dishwashers, and microwave ovens traditionally use PIC17C MCUs to scan a 4x5 keypad, drive a 7-segment or character LCD, and time the motor or magnetron with high accuracy. The PIC17LC762T-08/L's 33 I/O lines handle 20 keypad pins plus 14 LCD segment pins, the 10-bit ADC reads the water-level sensor and door-latch status, and the CCP/PWM module generates the buzzer tone. Its 2.5-5.0 V supply range means the same MCU runs on either an unregulated 5 V or a switched 3.3 V rail, simplifying UL/CE safety-isolation design. OTP memory locks the firmware against field tampering of safety-critical parameters.
Được đề xuất
POS Terminal and Vending Controller
Vending machines and small point-of-sale terminals leverage the PIC17LC762T-08/L's combination of UART (for bill/coin acceptor MDB interface), I2C master (for EEPROM price tables and RTC), and 16-channel ADC (for coin opto-sensor calibration). The single-cycle MULFW accelerates vending-decision logic and currency-handling state machines. The 84-PLCC package sits comfortably on a socketed controller board for easy field service replacement. With OTP memory, the firmware image cannot be cloned by counterfeiters, a security advantage over flash-based MCUs in unattended payment applications.
Được đề xuất
Industrial Process Controller (PID Loop)
Process controllers for temperature, pressure, and flow regulation use the PIC17LC762T-08/L as a single-chip PID solution. The 10-bit ADC samples the process variable, the hardware MULFW executes the P, I, and D terms in real time, and the CCP/PWM drives the heater or proportional valve. The 33 I/O lines accommodate a 4x4 keypad for setpoint entry, a 16x2 character LCD for display, and four alarm outputs. The Brown-Out Reset and Watchdog Timer ensure safe shutdown on power glitches or firmware lock-up, both required by IEC 61508 SIL-1 process-control applications.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17LC762T-08/L — 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 | PIC17LC762-08I/L | PIC17LC762-08/L | PIC17C762T-33/L |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same |
| Program Memory | 16 KB OTP (8K x 16) | 16 KB OTP (8K x 16) | 16 KB OTP (8K x 16) | 16 KB OTP (8K x 16) |
| RAM Size | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| Max Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 33 MHz |
| Supply Voltage | 2.5 V to 5.0 V | 2.5 V to 5.0 V | 2.5 V to 5.0 V | 4.5 V to 5.5 V |
| ADC | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch |
| Operating Temperature | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) |
Bảo phân biệt quan trọng
- Industry's only 16-channel 10-bit ADC in a 84-PLCC 8-bit MCU (vsPIC16F877A-I/PT)
- On-chip 8-bit hardware multiplier executes MULFW in 121 ns (vsPIC16F877A-I/PT)
- Wider 2.5-5.0 V supply range vs 5 V-only PIC17C762 (vsPIC17C762T-33/L)
- OTP memory prevents firmware cloning in unattended payment devices (vsPIC16F877A-I/PT (flash))
Ghi chú thiết kế
OTP memory on the PIC17LC762T-08/L can be programmed exactly once. Validate firmware thoroughly with MPLAB SIM and an in-circuit emulator (ICE 17C) before committing parts to production. A single bit error requires scrapping the device. Use the PIC17C76x programming specification (DS39026) for the exact VPP, VDD, and timing sequence; deviating from these parameters can damage the part without raising a programming error flag.
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair (pins 34, 59 for VDD and 33, 58 for VSS). Add a single 10 uF bulk tantalum or aluminum electrolytic capacitor at the board entry point. The PIC17C family draws brief supply current spikes (up to 50 mA) during table-read operations; insufficient bulk capacitance causes VDD droops that trigger spurious Brown-Out Resets. Estimated quiescent current at 5 V, 8 MHz, all peripherals disabled is approximately 5 mA per the datasheet DC characteristics.
The 84-PLCC socket (e.g., Augat 84-PRS13002 or 3M 8440-21B1-RK-TD) accepts the part and allows field replacement, but adds 5-6 mm of vertical height. For surface-mount-only boards, use a 84-PLCC SMT pad pattern with J-lead footprint per JEDEC MO-047. Keep analog traces (RA0-RA7, RE0-RE7) routed away from the OSC1/OSC2 clock traces and from PWM outputs (CCP1, CCP2) to minimize ADC conversion noise.
The PIC17C MULFW (hardware multiply) and TBLRD/TBLWT (table read/write) instructions can execute concurrently with ADC conversions, injecting digital noise into the analog supply rail. For high-precision 10-bit measurements, gate the ADC start-of-conversion to a quiet window or insert two NOP cycles between MULFW and ADCON0.GO. An external 2.5 V reference (e.g., MCP1525) instead of VDD-derived reference can improve ADC absolute accuracy by 2-3 LSB in noisy environments.
Thông tin tuân thủ
RoHS and REACH compliance status not stated in the verified web data; the part is commercial-temperature grade (0-70 C) and NOT AEC-Q100 qualified - select an automotive-grade PIC18F or dsPIC33E variant for vehicular applications.