PIC17C756AT-16I/L - 8-Bit 16MHz OTP MCU 32KB Flash 50 I/O | Microchip
MPN: PIC17C756AT-16I/L ✗ Cuối đờiPIC17C756AT-16I/L Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (RAM and program memory), and peripherals such as timers, ADCs, and communication interfaces. The PIC17C family sits at the upper end of Microchip's 8-bit OTP (One-Time Programmable) portfolio, above the PIC16C and below the PIC18 series. Program memory on the PIC17C756A is 16-bit wide, giving 32KB (16K x 16) of OTP storage, paired with 902 bytes of RAM, an 8-level hardware stack, and 50 user I/O lines. These hypernyms place the device in the hierarchy: microcontroller -> 8-bit MCU -> PIC17C family -> CMOS EPROM-based MCU.
Key features include an 8-channel 10-bit ADC, two USART modules, one I2C (MSSP) and one SPI peripheral, a single-cycle hardware 8x8 multiplier, and the RISC-style 58-instruction set. The instruction cycle is 121ns at 16MHz (200ns at 8MHz), and DC to 33MHz clock input is supported per family specifications.
The architecture uses a Harvard bus with separate program and data paths. The 16-bit wide program memory enables denser code per address than 14-bit PIC16 cores. An interrupt controller handles up to 17 sources with prioritized vectoring. Power management includes selectable oscillator modes (XT, HS, RC) and a power-on reset / brown-out reset block. The CMOS EPROM process delivers low operating current, and the device supports in-circuit serial programming (ICSP) for production line code loading.
Typical applications include industrial control and instrumentation, motor control front-ends, automotive subsystems (dashboards, sensors), white goods and HVAC controls, and embedded communication bridges. The 50 I/O and rich peripheral mix make it well-suited for human-machine interface boards with displays and keypads.
When designing, ensure the OTP window (the "/L" ceramic-windowed ceramic package option) is considered for prototype iteration: code revisions require UV erase. For volume production, use the OTP-only /L or /Q versions. Decoupling caps on VDD/AVDD/VSS should be placed within 5mm of each pin to keep ADC noise within 1 LSB.
This page consolidates distributor pricing for the PIC17C756AT-16I/L, pin-compatible drop-in alternatives within the PIC17C family, and practical design notes that complement - and in places extend - what the manufacturer datasheet covers.
Bộ thay thế dễ dàng lắp đặt cho PIC17C756AT-16I/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 PIC17C756AT-16I/L (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Data Bus Width, Program Memory Type, Hardware Multiplier.
PIC17C756AT-16/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C756A-33E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C752T-33/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C752-16/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C756AT-16I/L Tỷ lệ tối đa & tính chất điện
| Core | PIC17C 8-bit RISC |
| Instruction Set Width | 16-bit |
| Clock Input (max) | 33 MHz |
| Clock Input (this part) | 16 MHz |
| Instruction Cycle Time | 121 ns (at 16 MHz) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| User I/O | 50 |
| ADC | 10-bit, 8 channels |
| USART | 2 |
| I2C (MSSP) | 1 |
| SPI | 1 |
| Hardware Multiplier | 8 x 8 single-cycle |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 68-pin PLCC (L) 24.23 x 24.23 mm |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC17C756AT-16I/L
| Chân 1 | RA0/AN0 — Port A bit 0 / ADC analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / ADC analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / ADC analog input 2 |
| Chân 4 | RA3/AN3 — Port A bit 3 / ADC analog input 3 |
| Chân 5 | RA4/AN4/T0CKI — Port A bit 4 / ADC analog input 4 / Timer0 clock |
| Chân 6 | RA5/AN5 — Port A bit 5 / ADC analog input 5 |
| Chân 7 | RA6/AN6 — Port A bit 6 / ADC analog input 6 |
| Chân 8 | RA7/AN7 — Port A bit 7 / ADC analog input 7 |
| Chân 9 | AVSS — Analog ground reference |
| Chân 10 | AVDD — Analog positive supply |
| Chân 11 | VSS — Digital ground |
| Chân 12 | VDD — Digital positive supply (4.5V to 5.5V) |
| Chân 13 | OSC1 — Oscillator input |
| Chân 14 | OSC2 — Oscillator output |
| Chân 15 | RC0 — Port C bit 0 |
| Chân 16 | RC1 — Port C bit 1 |
| Chân 17 | RC2 — Port C bit 2 |
| Chân 18 | RC3 — Port C bit 3 |
| Chân 19 | RD0 — Port D bit 0 |
| Chân 20 | RD1 — Port D bit 1 |
| Chân 21 | RD2 — Port D bit 2 |
| Chân 22 | RD3 — Port D bit 3 |
| Chân 23 | RD4 — Port D bit 4 |
| Chân 24 | RD5 — Port D bit 5 |
| Chân 25 | RD6 — Port D bit 6 |
| Chân 26 | RD7 — Port D bit 7 |
| Chân 27 | RE0 — Port E bit 0 |
| Chân 28 | RE1 — Port E bit 1 |
| Chân 29 | RE2 — Port E bit 2 |
| Chân 30 | RE3 — Port E bit 3 |
| Chân 31 | RE4 — Port E bit 4 |
| Chân 32 | RE5 — Port E bit 5 |
| Chân 33 | RE6 — Port E bit 6 |
| Chân 34 | RE7 — Port E bit 7 |
| Chân 35 | RF0 — Port F bit 0 |
| Chân 36 | RF1 — Port F bit 1 |
| Chân 37 | RF2 — Port F bit 2 |
| Chân 38 | RF3 — Port F bit 3 |
| Chân 39 | RF4 — Port F bit 4 |
| Chân 40 | RF5 — Port F bit 5 |
| Chân 41 | RF6 — Port F bit 6 / TX1 |
| Chân 42 | RF7 — Port F bit 7 / RX1 |
| Chân 43 | RG0 — Port G bit 0 |
| Chân 44 | RG1 — Port G bit 1 |
| Chân 45 | RG2 — Port G bit 2 |
| Chân 46 | RG3 — Port G bit 3 |
| Chân 47 | RG4 — Port G bit 4 |
| Chân 48 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 49 | RB1 — Port B bit 1 |
| Chân 50 | RB2 — Port B bit 2 |
| Chân 51 | RB3 — Port B bit 3 |
| Chân 52 | RB4 — Port B bit 4 |
| Chân 53 | RB5 — Port B bit 5 |
| Chân 54 | RB6 — Port B bit 6 / PGC (clock) |
| Chân 55 | RB7 — Port B bit 7 / PGD (data) |
| Chân 56 | RC4/SDI/SDA — Port C bit 4 / SPI SDI / I2C SDA |
| Chân 57 | RC5/SDO — Port C bit 5 / SPI SDO |
| Chân 58 | RC6/SCK/SCL — Port C bit 6 / SPI SCK / I2C SCL |
| Chân 59 | RC7/SS — Port C bit 7 / SPI SS |
| Chân 60 | RD0/TX2 — Port D bit 0 / USART2 TX (alt mapping) |
| Chân 61 | RD1/RX2 — Port D bit 1 / USART2 RX (alt mapping) |
| Chân 62 | TX1/RG5 — USART1 TX / Port G bit 5 |
| Chân 63 | RX1/RG6 — USART1 RX / Port G bit 6 |
| Chân 64 | MCLR/VPP — Reset input / programming voltage |
| Chân 65 | VSS — Digital ground |
| Chân 66 | VDD — Digital positive supply (4.5V to 5.5V) |
| Chân 67 | RA0/OSC1 — Port A bit 0 / secondary OSC1 (alt) |
| Chân 68 | RA1/OSC2 — Port A bit 1 / secondary OSC2 (alt) |
Ứng dụng tiêu biểu
PIC17C756AT-16I/L phù hợp cho 6 Áp dụngs: Industrial Control & Instrumentation, Motor Control Front-Ends, Automotive Subsystems, White Goods & HVAC Controllers, Embedded Communication Bridges, Human-Machine Interface (HMI) Boards.
Industrial Control & Instrumentation
The PIC17C756AT-16I/L fits industrial control boards where 50 I/O lines drive relays, sensors, and HMI displays. The 10-bit 8-channel ADC samples transducer voltages at 121ns instruction cycles, while 902 bytes of RAM buffer control-loop variables. Per DS30411, dual USART handles RS-485 bridges for SCADA nodes; MSSP drives I2C sensor buses. The 16MHz clock gives 8.25 MIPS, sufficient for PI/PWM control of valves and motor starters. Industrial grade -40C to +85C tolerates factory-floor ambient. Suggested companions: PIC18F6520 (modern Flash drop-in) and PIC16F877A (companion HMI processor).
Được đề xuất
Motor Control Front-Ends
The PIC17C756AT-16I/L controls small DC, stepper, and BLDC motors via PWM-driven FET bridges. Per DS30411, the hardware 8x8 multiplier accelerates Park/Clark transforms in sensorless control, and 50 I/O lines drive gate drivers, Hall sensors, and fault comparators. The 32KB OTP stores vector tables and tuning constants; 902 bytes RAM holds rotor-state buffers. With 16MHz clock the 121ns instruction cycle achieves 8.25 MIPS, sufficient for 20kHz PWM with control loop headroom. For higher-speed FOC, consider PIC18F4431 or dsPIC30F2010 as migration options.
Được đề xuất
Automotive Subsystems
The PIC17C756AT-16I/L is used in legacy automotive subsystems including instrument clusters, HVAC controllers, and sensor interfaces. Per DS30411, the dual USART supports CAN bridges via external transceivers, and 50 I/O drives dashboard LCDs, keypads, and LED indicators. The 10-bit ADC reads temperature and pressure sensors at 121ns sample-and-hold cycles. Industrial temperature grade -40C to +85C tolerates cabin ambient; for under-hood or AEC-Q100 mandated designs, migrate to PIC18F6520 or dsPIC33EV128GM004. The 32KB OTP suits fixed-function cluster firmware.
Được đề xuất
White Goods & HVAC Controllers
The PIC17C756AT-16I/L drives white goods (washing machines, dishwashers) and HVAC thermostat controllers. The 50 I/O lines switch triacs, read user keypads, and drive 7-segment displays. Per DS30411, MSSP (I2C) connects to EEPROM, RTC, and temperature/humidity sensors; the 10-bit ADC monitors NTC thermistors and current-sensing shunts. 902 bytes RAM stores cycle state machines, and 32KB OTP holds washing/drying profiles. The 4.5V-5.5V supply rails from rectified mains are tolerated; -40C to +85C industrial range covers garage and outdoor installations.
Được đề xuất
Embedded Communication Bridges
The PIC17C756AT-16I/L serves as a protocol bridge between RS-232, RS-485, I2C, and SPI segments in embedded gateways. Per DS30411, two USARTs enable simultaneous RS-232 and RS-485 connections; MSSP runs I2C to sensor clusters while SPI addresses external EEPROM or display drivers. The 16MHz clock with 8.25 MIPS throughput handles byte-level protocol parsing without DMA. 902 bytes RAM is adequate for ring buffers; 32KB OTP stores protocol stacks. Industrial -40C to +85C range supports outdoor enclosures. For higher throughput migration, dsPIC33EP64MC504 offers DSP-class performance.
Được đề xuất
Human-Machine Interface (HMI) Boards
The PIC17C756AT-16I/L drives HMI boards with character LCDs, keypads, and status LEDs. Per DS30411, 50 I/O lines scan 8x8 matrix keypads and drive 4x40 character LCDs via parallel interface. The 10-bit ADC reads potentiometers and rotary encoders; the 32KB OTP stores menu trees and string tables; 902 bytes RAM holds display buffers. The 8.25 MIPS throughput debounces keys and refreshes displays at 50Hz without flicker. The 68-pin PLCC footprint simplifies PCB layout for retrofits and legacy HMI panels.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C756AT-16I/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 | PIC17C756AT-16/PT | PIC17C756A-16I/PT | PIC17C756A-16E/PT | PIC17C756A-33E/PT | PIC17C752-16/L |
|---|---|---|---|---|---|---|
| Package | 68-PLCC (L) | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 16 MHz |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 678 bytes |
| User I/O | 50 | 50 | 50 | 50 | 50 | 50 |
| Temperature Grade | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | 0C to +70C (Commercial) |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| Lifecycle | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Drop-in same-package alternative in commercial temperature grade (vsPIC17C756AT-16/PT)
- Drop-in same-package alternative at higher clock speed (vsPIC17C756A-33E/PT)
- Drop-in alternative with 50% program memory for cost-sensitive designs (vsPIC17C752-16/L)
Ghi chú thiết kế
PIC17C756AT-16I/L requires 4.5V to 5.5V on VDD with a separate AVDD/AVSS pair for the 10-bit ADC. Per DS30411, place a 10uF tantalum + 0.1uF ceramic on each VDD/AVDD pin within 5mm, plus a ferrite bead between digital and analog supplies. Brown-out reset is recommended at 4.0V for industrial 5V rails. Inrush current is ~20mA during ICSP programming - ensure regulator headroom or use a switcher with soft-start.
The 68-pin PLCC footprint is 24.23x24.23mm with 1.27mm pitch J-leads. Route oscillator traces on the top layer with grounded guard ring and keep traces under 10mm to avoid parasitic capacitance. Place ICSP header (PGC, PGD, MCLR, VDD, VSS) on board edge for production programming access. Estimated: a 4-layer stackup with 0.2mm dielectric yields characteristic impedance near 50 ohm for the oscillator trace.
OTP one-time-programmability means code cannot be patched after programming - prototype with the PIC17C756AT-16I/L windowed /JW variant (UV-eraseable) or use PIC18F6520 for Flash-based iteration. Per DS30411, ICSP requires MCLR held high in run mode; a 10kohm pull-up to VDD prevents spurious resets. Configuration bits must be set explicitly - leave defaults only for prototypes.
The 16MHz clock with 121ns instruction cycle requires solid oscillator layout. Per DS30411, use a crystal with ESR under 30 ohm and load capacitors sized per the crystal's CL specification (typically 15-33pF). For EMI-sensitive applications, gate the oscillator buffer when the MCU is in sleep mode. The ADC's 10-bit resolution needs source impedance under 10kohm to avoid 1 LSB errors - add a unity-gain op-amp buffer for high-impedance sensors.
Thông tin tuân thủ
PIC17C756A family was released before RoHS mandate - exact compliance status not stated in verified web data. For RoHS-compliant new designs, use PIC18F6520. Not AEC-Q100 qualified; for automotive applications use AEC-Q100-grade replacements.
