PIC17C762-16/PT - 8-bit OTP MCU, 16KB EPROM, 66 I/O TQFP-80 | Microchip
MPN: PIC17C762-16/PT ✗ Cuối đờiPIC17C762-16/PT Tóm tắt
An OTP microcontroller (One-Time-Programmable microcontroller) is a non-volatile program-memory MCU whose EPROM cells can be written exactly once during production programming, then retain their bit pattern for the lifetime of the part. OTP sits in the microcontroller taxonomy between mask-ROM MCUs (cheapest, programmed at the fab) and flash MCUs (rewritable for field upgrades); OTP MCUs are favored for high-volume mature products where firmware is stable and production tooling costs favor factory programming. Within Microchip's lineup, PIC17C762 belongs to the PIC17C family of 8-bit RISC microcontrollers, which in turn sits above PIC16C and below PIC18 in performance and peripheral count.
Key features of the PIC17C762-16/PT include its high-performance Harvard RISC architecture with only 58 single-word instructions, single-cycle instruction execution (except program branches and table reads/writes which are two-cycle), a wide 4.5 V to 5.5 V supply range, an external clock input up to 33 MHz, and built-in brown-out / power-on reset and watchdog timer. The internal 10-bit A/D converter supports multiple channels for mixed-signal embedded designs. Industrial-grade operation is supported through the -40C to +85C commercial/industrial range (per the PT suffix family). The 80-pin TQFP package exposes 66 I/O pins, leaving 14 pins for power, ground, oscillator, MCLR, and programming functions.
Architecturally, the PIC17C762 separates program memory (16 KB OTP EPROM) from data memory (678 bytes RAM + 16-level hardware stack), allowing the 16-bit instruction word to coexist with an 8-bit data path. The single-cycle hardware multiplier accelerates arithmetic operations common in motor control and instrumentation, while the peripheral set supports both event-driven (timer/capture) and communications (USART) workloads.
Typical applications include industrial control panels, motor drive controllers, instrumentation front-ends, sensor conditioning with on-chip A/D, low-cost data acquisition terminals, and any high-volume embedded design that benefits from one-time factory programming of stable firmware. Compared with newer flash-based PIC18F8520, the PIC17C762-16/PT targets production runs where firmware stability eliminates the need for field re-programmability.
When designing with this part, note that OTP memory cannot be erased or rewritten; firmware bugs are unrecoverable in the field. Ensure a stable, well-regulated 5 V supply and follow Microchip's PIC17C programming specifications for in-circuit or socket programming using the ICSP interface. A newer recommended device per Microchip is the PIC18F8520, which adds flash memory and improved peripherals while remaining software-compatible at the architectural level.
Bộ thay thế dễ dàng lắp đặt cho PIC17C762-16/PT — 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/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Data Bus Width, Instruction Cycle Time, Maximum Clock Frequency.
PIC17C762-16I/PT
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Xem tài liệu →PIC17C762-16E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C762T-16I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C762T-16/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC17C762-16E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C762-16/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC Harvard |
| Program Memory Type | OTP EPROM (One-Time-Programmable) |
| Program Memory Size | 16 KB (16 K x 16 words) |
| RAM Size | 678 bytes |
| Bề rộng đường dữ liệu | 16-bit (instruction) / 8-bit (data) |
| Tần số xung maksimum | 33 MHz (external) |
| Instruction Cycle Time | 121 ns (single-cycle for most instructions) |
| MIPS Performance | 8.25 MIPS |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| Number of I/O Pins | 66 |
| A/D Converter | 10-bit, multi-channel |
| Hardware Multiplier | 8-bit x 8-bit, single-cycle |
| Number of Instructions | 58 single-word instructions |
| Hộp | TQFP-80 (PT), 12x12 mm, surface mount |
| Khoảng nhiệt độ hoạt động | 0C to +70C (Commercial) |
| Kiểu lắp đặt | Surface Mount (Gull Wing) |
| Trạng thái RoHS | Contains lead (pre-RoHS process); non-compliant for new designs |
Cấu hình chân PIC17C762-16/PT
| Chân 1 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Chân 4 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Chân 5 | RA4/AN4 — Port A bit 4 / analog input 4 |
| Chân 6 | RA5/AN5 — Port A bit 5 / analog input 5 |
| Chân 7 | AVDD — Analog supply voltage |
| Chân 8 | AVSS — Analog ground |
| Chân 9 | OSC1 — Oscillator input |
| Chân 10 | OSC2 — Oscillator output |
| Chân 11 | MCLR — Master clear reset (active low) |
| Chân 12 | VPP — Programming voltage input |
| Chân 13 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 14 | RB1 — Port B bit 1 |
| Chân 15 | RB2 — Port B bit 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 | VDD — Digital supply voltage (+5V) |
| Chân 22 | VSS — Digital ground |
| Chân 23 | RC0 — Port C bit 0 |
| Chân 24 | RC1 — Port C bit 1 |
| Chân 25 | RC2 — Port C bit 2 |
| Chân 26 | RC3 — Port C bit 3 |
| Chân 27 | RC4 — Port C bit 4 |
| Chân 28 | RC5 — Port C bit 5 |
| Chân 29 | RC6 — Port C bit 6 |
| Chân 30 | RC7 — Port C bit 7 |
| Chân 31 | RD0 — Port D bit 0 |
| Chân 32 | RD1 — Port D bit 1 |
| Chân 33 | RD2 — Port D bit 2 |
| 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 | VDD — Digital supply voltage (+5V) |
| Chân 40 | VSS — Digital ground |
| Chân 41 | RE0 — Port E bit 0 |
| Chân 42 | RE1 — Port E bit 1 |
| Chân 43 | RE2 — Port E bit 2 |
| Chân 44 | RE3 — Port E bit 3 |
| Chân 45 | RE4 — Port E bit 4 |
| Chân 46 | RE5 — Port E bit 5 |
| Chân 47 | RE6 — Port E bit 6 |
| Chân 48 | RE7 — Port E bit 7 |
| Chân 49 | RF0 — Port F bit 0 |
| Chân 50 | RF1 — Port F bit 1 |
| Chân 51 | RF2 — Port F bit 2 |
| Chân 52 | RF3 — Port F bit 3 |
| Chân 53 | RF4 — Port F bit 4 |
| Chân 54 | RF5 — Port F bit 5 |
| Chân 55 | RF6 — Port F bit 6 |
| Chân 56 | RF7 — Port F bit 7 |
| Chân 57 | VDD — Digital supply voltage (+5V) |
| Chân 58 | VSS — Digital ground |
| Chân 59 | RG0 — Port G bit 0 |
| Chân 60 | RG1 — Port G bit 1 |
| Chân 61 | RG2 — Port G bit 2 |
| Chân 62 | RG3 — Port G bit 3 |
| Chân 63 | RG4 — Port G bit 4 |
| Chân 64 | TX/CK — USART transmit / clock |
| Chân 65 | RX/DT — USART receive / data |
| Chân 66 | T0CKI — Timer 0 clock input |
| Chân 67 | T1CKI — Timer 1 clock input |
| Chân 68 | CCP1 — Capture/Compare/PWM 1 |
| Chân 69 | CCP2 — Capture/Compare/PWM 2 |
| Chân 70 | SS — SPI slave select |
| Chân 71 | SDO — SPI data out |
| Chân 72 | SDI — SPI data in |
| Chân 73 | SCK — SPI clock |
| Chân 74 | VDD — Digital supply voltage (+5V) |
| Chân 75 | VSS — Digital ground |
| Chân 76 | RH0 — Port H bit 0 |
| Chân 77 | RH1 — Port H bit 1 |
| Chân 78 | RH2 — Port H bit 2 |
| Chân 79 | RH3 — Port H bit 3 |
| Chân 80 | RH4 — Port H bit 4 |
Ứng dụng tiêu biểu
PIC17C762-16/PT phù hợp cho 6 Áp dụngs: Industrial Control Panels, Motor Drive Controllers, Sensor Instrumentation Front-Ends, Data Acquisition Terminals, Security and Access Control Systems, White Goods and Appliance Controllers.
Industrial Control Panels
The PIC17C762-16/PT is well suited to industrial control panels where stable, mature firmware drives keypads, LED indicators, relay outputs, and discrete I/O. Its 66 I/O pins handle multiple HMI inputs and outputs without external expanders, while the 10-bit on-chip ADC reads analog setpoints (temperature, pressure, voltage) directly. The Harvard RISC core's deterministic single-cycle instruction execution (121 ns) ensures predictable response times for real-time control loops, and the 4.5-5.5 V supply matches common industrial 5 V backplanes. OTP memory guarantees firmware integrity against accidental field reprogramming in deployed equipment.
Được đề xuất
Motor Drive Controllers
The PIC17C762-16/PT's 8-bit single-cycle hardware multiplier accelerates the PID and vector-control math used in brushed and stepper motor controllers, while its 33 MHz clock delivers 8.25 MIPS for real-time commutation. The capture/compare/PWM peripherals generate motor-drive waveforms with low software overhead, and the 10-bit ADC samples motor current/voltage feedback in synchronous timing. OTP memory suits high-volume motor products with stable firmware. For higher-performance BLDC/FOC drives, consider migrating to dsPIC33E devices, but for cost-sensitive brushed/stepper applications the PIC17C762 remains a strong fit.
Được đề xuất
Sensor Instrumentation Front-Ends
Instrumentation front-ends benefit from the PIC17C762-16/PT's on-chip 10-bit ADC and 66 I/O pins, which allow direct connection to multiple analog sensors (thermocouples via amplifier, RTDs, strain gauges) and digital sensors. The hardware multiplier speeds scaling and linearization calculations, while the 678-byte RAM accommodates moving-average filters and calibration tables. The deterministic 121 ns instruction cycle supports consistent sampling intervals essential for measurement accuracy. OTP memory locks calibrated firmware into production units.
Được đề xuất
Data Acquisition Terminals
Low-cost data acquisition terminals use the PIC17C762-16/PT to read multiple analog channels via the 10-bit ADC, buffer samples in 678-byte RAM, and transmit results over USART to a host PC or PLC. The 16 KB OTP program memory holds acquisition routines, calibration coefficients, and a simple command interpreter. Industrial-grade I/E variants operate over -40C to +85C/+125C for factory-floor deployment. For higher-channel-count applications, the PIC17C762's 66 I/O enable direct multiplexing without external logic.
Được đề xuất
Security and Access Control Systems
The PIC17C762-16/PT is a fit for security keypads, RFID readers, and access-control panels where its 66 I/O pins drive 4x4 matrix keypads, status LEDs, and door-lock relays, while the on-chip ADC monitors backup battery voltage. OTP memory prevents firmware tampering and unauthorized modification of access-control logic. The Harvard architecture's deterministic execution ensures consistent keypad debounce timing and reliable USART communication with the central controller. The commercial temperature grade suits indoor installations.
Được đề xuất
White Goods and Appliance Controllers
Washing machines, dishwashers, ovens, and other white goods use the PIC17C762-16/PT as the main controller, leveraging 66 I/O pins to drive 7-segment displays, control panel keypads, triac-fired heater outputs, and motor relays. The 10-bit ADC reads water-level, temperature, and motor-current sensors for closed-loop control. The Harvard RISC core's deterministic execution ensures safe appliance sequencing, and OTP memory locks appliance firmware against field modification. The 33 MHz clock provides responsive user-interface update rates.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C762-16/PT — 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 | PIC17C762-16I/PT | PIC17C762-16E/PT | PIC17C762T-16I/PT | PIC17C762T-16/PT |
|---|---|---|---|---|---|
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Program Memory Size | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM Size | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| Operating Temperature | 0C to +70C | -40C to +85C | -40C to +125C | -40C to +85C | 0C to +70C |
| Maximum Clock | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz |
| Number of I/O Pins | 66 | 66 | 66 | 66 | 66 |
| A/D Converter | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Highest pin count and I/O count in the PIC17C family for panel/control designs (vsPIC17C756A-16I/PT)
- Industrial and extended temperature variants available with same die (vsPIC16LF877A-I/PT)
- Mature 8-bit architecture with extensive legacy code base (vsPIC18F8520 (recommended migration))
Ghi chú thiết kế
PIC17C762-16/PT uses OTP (One-Time-Programmable) EPROM, not flash memory. Once programmed, the firmware CANNOT be erased or rewritten in the field. This means any firmware bug discovered after production is unrecoverable in-circuit and the part must be replaced. Designers must fully validate firmware on engineering samples before committing to production programming. For new designs requiring field upgradability, use the Microchip-recommended PIC18F8520 (flash-based) instead.
PIC17C762-16/PT requires a regulated 4.5 V to 5.5 V supply with adequate decoupling. Place 100 nF ceramic capacitors close to each VDD/VSS pin pair, plus a 10 uF bulk tantalum or aluminum capacitor at the device supply pin. The AVDD/AVSS analog supply pins should be filtered separately from VDD/VSS to keep ADC readings clean - typical practice is a ferrite bead between digital and analog supplies plus a 100 nF + 10 uF filter capacitor at AVDD. In-circuit Serial Programming (ICSP) requires the VPP pin to be driven to ~13V during programming.
Route the 33 MHz oscillator (or external clock) traces on the top layer with short, direct paths to OSC1/OSC2 and guard them with a ground pour on both sides. Keep high-speed switching signals (CCP PWM outputs, USART lines) away from analog ADC inputs to minimize digital-to-analog crosstalk. The TQFP-80 package has a center thermal pad that should be soldered to a ground plane for mechanical strength and thermal dissipation. Place a 4-layer PCB with dedicated VDD and GND planes for production designs.
The /PT suffix specifically denotes commercial temperature grade (0C to +70C). For industrial applications, use /I/PT or /E/PT suffixes. Always check the operating-temperature marking on the chip against your application's environmental requirements. Mixing commercial parts into industrial designs is a common reliability failure that is often diagnosed only after field failures occur. Also verify pin 1 orientation - the TQFP-80 dot/notch indicator must be correctly aligned to avoid reversed mounting.
Thông tin tuân thủ
PIC17C762-16/PT was released before RoHS lead-free mandates were in force and uses lead-containing solder finish. Not RoHS compliant; not suitable for new designs requiring RoHS. AEC-Q100 automotive qualification not available. Reach compliant per standard Microchip declarations.
