PIC17C762-16/L - 8-Bit 16MHz 16KB OTP MCU 84-PLCC | Microchip
MPN: PIC17C762-16/L ✗ Cuối đờiPIC17C762-16/L Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and integrated peripherals such as timers, ADC, communication ports, and I/O. The PIC17C family sits at the upper end of Microchip's classic 8-bit PIC architecture hierarchy (PIC10/12/16/17/18), targeting high-throughput embedded control with Harvard-bus throughput and RISC instruction set efficiency. The PIC17C762 specifically extends the family with a wider 16-bit instruction word and 8-bit data path, balancing code density with 8-bit peripheral simplicity.
Key features of the PIC17C762-16/L include 16KB of OTP program memory (8K words x 16 bits), a 10-bit analog-to-digital converter, and a 50-pin I/O structure on the 84-PLCC footprint. The device executes most instructions in a single 121 ns cycle (8.25 MIPS at 33 MHz oscillator) and supports only 58 single-word instructions, easing code development. It operates from a 4.5V to 5.5V supply, includes a hardware multiplier, multiple timer/counter modules, and supports both parallel and serial communication peripherals typical of mid-1990s industrial controllers.
Architecturally, the PIC17C762 uses an enhanced Harvard architecture with a 16-bit program memory bus and 8-bit data memory bus, allowing single-cycle instruction fetch plus data access. The OTP cell technology permits factory or prototype programming but does not support in-circuit re-programming - this is a key distinction versus modern Flash-based PIC18 successors. The integrated 10-bit ADC, multiple capture/compare/PWM modules, and dual USART ports make it suitable for closed-loop motor control, instrumentation, and process automation where deterministic interrupt latency matters.
Typical applications include industrial process control, motor drive control loops, HVAC equipment, security panel controllers, and legacy instrumentation interfaces. The wide I/O count and PLCC footprint suit backplane-style designs and through-hole manufacturing lines that pre-date surface-mount-only conversion.
When designing with the PIC17C762-16/L, verify oscillator configuration (HS vs EC mode) against your crystal selection and confirm that your toolchain targets the PIC17C core - the PIC17C instruction set is a superset of the PIC16C but with different SFR mapping. Note that Microchip officially recommends the PIC18F8520 as a newer replacement, so consider migration paths for new designs.
This page consolidates distributor pricing, drop-in alternative MPNs, and practical design considerations - information not assembled in any single manufacturer document.
Bộ thay thế dễ dàng lắp đặt cho PIC17C762-16/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 PIC17C762-16/L (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, Program Memory Type, Core Architecture, Data Bus Width.
PIC17C756A-16/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-16/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C766-16/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8520-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F8720-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C762-16/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762-16/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit (Harvard) |
| Family | PIC17C |
| Bề rộng đường dữ liệu | 8 bit |
| Program Memory Size | 16 KB (8K x 16) |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Tần số xung maksimum | 16 MHz external / 33 MHz internal |
| Instruction Throughput | 8.25 MIPS (121 ns instruction cycle) |
| Supply Voltage (Vcc) | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| ADC | 10-bit integrated |
| Instruction Set Size | 58 single-word instructions |
| Hộp | 84-PLCC (J-lead, 29.31 x 29.31 mm) |
| Kiểu lắp đặt | Surface Mount (PLCC socket compatible) |
| Nhiệt độ hoạt động | 0C to +70C (Commercial) |
| Trạng thái vòng đời | Not Recommended for New Designs (NRND) |
Cấu hình chân PIC17C762-16/L
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Chân 4 | RA3/AN3 — Port A bit 3 / Analog input channel 3 |
| Chân 5 | RA4/AN4 — Port A bit 4 / Analog input channel 4 |
| Chân 6 | RA5/AN5 — Port A bit 5 / Analog input channel 5 |
| Chân 7 | RA6/AN6 — Port A bit 6 / Analog input channel 6 |
| Chân 8 | RA7/AN7 — Port A bit 7 / Analog input channel 7 |
| Chân 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Chân 14 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Chân 15 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Chân 16 | RB3 — Port B bit 3 |
| Chân 17 | RB4 — Port B bit 4 |
| Chân 18 | RB5 — Port B bit 5 |
| Chân 19 | RB6 — Port B bit 6 |
| Chân 20 | RB7 — Port B bit 7 |
| Chân 21 | RC0 — Port C bit 0 |
| Chân 22 | RC1 — Port C bit 1 |
| Chân 23 | RC2 — Port C bit 2 |
| Chân 24 | RC3 — Port C bit 3 |
| Chân 25 | RC4 — Port C bit 4 |
| Chân 26 | RC5 — Port C bit 5 |
| Chân 27 | RC6/TX1 — Port C bit 6 / USART1 transmit |
| Chân 28 | RC7/RX1 — Port C bit 7 / USART1 receive |
| Chân 29 | RD0 — Port D bit 0 |
| Chân 30 | RD1 — Port D bit 1 |
| Chân 31 | RD2 — Port D bit 2 |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | VSS — Ground reference |
| Chân 34 | RD3 — Port D bit 3 |
| Chân 35 | RD4 — Port D bit 4 |
| Chân 36 | RD5 — Port D bit 5 |
| Chân 37 | RD6 — Port D bit 6 |
| Chân 38 | RD7 — Port D bit 7 |
| Chân 39 | RE0/AN8 — Port E bit 0 / Analog input channel 8 |
| Chân 40 | RE1/AN9 — Port E bit 1 / Analog input channel 9 |
| Chân 41 | RE2/AN10 — Port E bit 2 / Analog input channel 10 |
| Chân 42 | RE3/AN11 — Port E bit 3 / Analog input channel 11 |
| Chân 43 | RE4/AN12 — Port E bit 4 / Analog input channel 12 |
| Chân 44 | RE5/AN13 — Port E bit 5 / Analog input channel 13 |
| Chân 45 | RE6/AN14 — Port E bit 6 / Analog input channel 14 |
| Chân 46 | RE7/AN15 — Port E bit 7 / Analog input channel 15 |
| Chân 47 | RF0 — Port F bit 0 |
| Chân 48 | RF1 — Port F bit 1 |
| Chân 49 | RF2 — Port F bit 2 |
| Chân 50 | RF3 — Port F bit 3 |
| Chân 51 | RF4 — Port F bit 4 |
| Chân 52 | RF5 — Port F bit 5 |
| Chân 53 | VDD — Positive supply voltage |
| Chân 54 | VSS — Ground reference |
| Chân 55 | RF6 — Port F bit 6 |
| Chân 56 | RF7 — Port F bit 7 |
| Chân 57 | RG0 — Port G bit 0 |
| Chân 58 | RG1 — Port G bit 1 |
| Chân 59 | RG2 — Port G bit 2 |
| Chân 60 | RG3 — Port G bit 3 |
| Chân 61 | RG4 — Port G bit 4 |
| Chân 62 | CA1 — Capture input 1 |
| Chân 63 | CA2 — Capture input 2 |
| Chân 64 | T0CKI — Timer 0 clock input |
| Chân 65 | T1CKI — Timer 1 clock input |
| Chân 66 | T2CKI — Timer 2 clock input |
| Chân 67 | T3CKI — Timer 3 clock input |
| Chân 68 | CCP1 — Capture/Compare/PWM channel 1 |
| Chân 69 | CCP2 — Capture/Compare/PWM channel 2 |
| Chân 70 | SCK — SPI clock |
| Chân 71 | SDI — SPI data input |
| Chân 72 | SDO — SPI data output |
| Chân 73 | SS — SPI slave select |
| Chân 74 | MCLR/VPP — Master clear reset / programming voltage input |
| Chân 75 | TX2 — USART2 transmit |
| Chân 76 | RX2 — USART2 receive |
| Chân 77 | VSS — Ground reference |
| 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
PIC17C762-16/L phù hợp cho 6 Áp dụngs: Industrial Process Control, HVAC Equipment Controllers, Motor Drive Control Loops, Security Panel Controllers, Legacy Instrumentation Interfaces, Point-of-Sale Terminal Controllers.
Industrial Process Control
The PIC17C762-16/L's 8.25 MIPS instruction throughput and 50 I/O pins make it well-suited for industrial process controllers managing sensor arrays and actuator banks. Its integrated 10-bit ADC reads 4-20 mA loop signals via external conditioning, while the OTP program memory stores calibrated lookup tables for PID tuning parameters. Designers should leverage the PIC17C's deterministic interrupt latency for time-critical control loops.
Được đề xuất
HVAC Equipment Controllers
HVAC system controllers benefit from the PIC17C762-16/L's combination of 16KB OTP program memory (sufficient for zoning schedules and fault diagnostics) and 50 I/O pins for damper motors, thermistor inputs, and relay outputs. The 4.5-5.5V supply aligns with 5V regulator rails common in legacy HVAC control boards, and the PIC17C family's mature toolchain reduces firmware development risk for long-life-cycle equipment.
Được đề xuất
Motor Drive Control Loops
The PIC17C762-16/L supports closed-loop DC motor and stepper control with its integrated 10-bit ADC for current sensing and PWM modules for drive signals. At 8.25 MIPS, the device executes PID loops at 10 kHz update rates with deterministic interrupt response, well within typical motor control bandwidths. For new designs, migrate to dsPIC33EP devices; this part suits maintaining existing 1990s-era motor controllers.
Được đề xuất
Security Panel Controllers
Security alarm panels require reliable OTP-stored firmware (no field tampering with Flash) plus enough I/O for zone loops, keypad scanning, and siren drivers. The PIC17C762-16/L's 16KB OTP holds zone-status state machines and communication stacks for legacy central-station protocols, while 50 I/O pins handle 8-16 zone inputs plus output relay banks. The 84-PLCC socket-friendly package supports field serviceability.
Được đề xuất
Legacy Instrumentation Interfaces
Test and measurement instruments from the late 1990s used PIC17C762-16/L for front-panel control, GPIB / RS-232 communication, and ADC data buffering. The 8-bit data path plus hardware multiplier (single-cycle 8x8) accelerates calibration math, and the wide instruction word stores ASCII lookup tables for menu display routines. Design teams maintaining these instruments should keep PIC17C762 stock as firmware baselines.
Được đề xuất
Point-of-Sale Terminal Controllers
POS terminals in the late 1990s used PIC17C762-16/L for keyboard scanning, display multiplexing, and serial communication with the main processor. Its 16KB OTP stores character maps and protocol handlers, while the 50 I/O pins drive 4x4 key matrices and 7-segment LED displays. The deterministic instruction timing simplifies debounce logic in the keypad scanning ISR routine.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C762-16/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 | PIC17C756A-16/L | PIC17C752-16/L | PIC17C766-16/L | PIC18F8520-I/L | PIC18F8720-I/L |
|---|---|---|---|---|---|---|
| Package | 84-PLCC (J-lead) | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same | 84-PLCC (J-lead) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP | 32 KB Flash | 128 KB Flash |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (re-programmable) | Flash (re-programmable) |
| Maximum Clock | 16 MHz external | 16 MHz external | 16 MHz external | 16 MHz external | 40 MHz external | 40 MHz external |
| I/O Pins | 50 | 50 | 50 | 50 | 68 | 68 |
| 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 | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit (13 channels) | 10-bit (16 channels) |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | Active |
Bảo phân biệt quan trọng
- Largest PIC17C family OTP memory in 84-PLCC (vsPIC17C752-16/L)
- Highest memory density in PIC17C 84-PLCC OTP family (vsPIC17C766-16/L)
- Drop-in Flash replacement available (vsPIC18F8520-I/L)
Ghi chú thiết kế
The PIC17C762-16/L uses OTP (One-Time-Programmable) EPROM memory, not Flash. Once programmed, the firmware cannot be erased or modified - verify your code with a windowed ceramic PIC17C762-JW sample (separate MPN) before committing to OTP parts for production. Microchip recommends the PIC18F8520 as the Flash-based successor; design new firmware on PIC18 tools unless you must replicate legacy PIC17C behavior.
The PIC17C762-16/L requires a stable 4.5V to 5.5V supply on pins 11, 32, and 53 (VDD), with VSS returns on pins 12, 33, 54, and 77. Place 100 nF decoupling ceramic capacitors as close as possible to each VDD/VSS pair, plus a bulk 10 uF tantalum or aluminum polymer capacitor on the supply rail. The OTP programming mode draws additional current through VPP (MCLR pin 74); ensure your reset circuit isolates VPP from normal operation.
The 84-PLCC package supports both surface-mount soldering and through-hole socket insertion. For socket-based designs, use a Mill-Max type PLCC-84 socket to allow field replacement - valuable for legacy equipment maintenance. Keep analog input traces (RA0-RA7, RE0-RE7) short and away from digital switching lines; the integrated 10-bit ADC achieves datasheet accuracy only with clean analog signal conditioning.
When using an external clock source on OSC1 (pin 9), keep the trace shorter than 25 mm and route it over a continuous ground plane to avoid ringing. The 16 MHz maximum frequency implies a 62.5 ns period - signal integrity degrades rapidly beyond a quarter-wavelength trace length. For EMI-sensitive designs, place a small series resistor (22-33 ohm) at the oscillator output pin to dampen overshoot.
Thông tin tuân thủ
RoHS and lead-free status not explicitly stated in the verified web data for PIC17C762-16/L. PLCC packages from this era often have matte-tin or tin-lead lead finishes; verify with distributor before Pb-free assembly compliance is required.
