PIC17C756A-33I/PT - 33MHz 8-bit OTP MCU, 32KB | Microchip
MPN: PIC17C756A-33I/PT ⚠ Lần mua cuốiPIC17C756A-33I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and programmable peripherals. PIC microcontrollers use a RISC-based Harvard architecture, executing one instruction per cycle (121 ns at 33 MHz). The PIC17 family is Microchip's highest-performance 8-bit line, designed for embedded applications that need more code space, more I/O, and faster execution than the PIC16 family can provide.
Key features include 32 KB of OTP program memory (16K x 16), 902 bytes of general-purpose RAM, 50 digital I/O pins, a 10-bit analog-to-digital converter, and a single-cycle hardware multiplier. The 8.25 MIPS throughput and 58-instruction RISC core make the part easy to program while still delivering 8-bit processing power suitable for real-time control.
Architecturally, the PIC17C756A combines a wide 16-bit instruction word with an 8-bit data path, dual 16-bit pointer register banks, an 8-level hardware stack, and dedicated peripheral interfaces including USART, SSP, and CCP modules. The Harvard bus keeps program-fetch and data-access fully parallel, eliminating fetch stalls and giving deterministic interrupt latency critical for motor and power-control loops.
Typical applications include industrial automation controllers, motor control (BLDC and stepper), HVAC and appliance control, automotive body and chassis subsystems, instrumentation front-ends, and embedded systems that require a 10-bit ADC and abundant digital I/O in a single chip.
When designing with this part, verify the OTP memory limitation early in the project lifecycle: code cannot be erased or rewritten, so production programming and verification flows must be locked before committing to volume. For prototypes and field-updateable designs, consider the flash-based PIC18F6520 as a pin-compatible successor.
This page synthesizes distributor pricing, cross-reference drop-in alternatives, and engineering guidance not found in the bare manufacturer datasheet, helping you decide quickly whether PIC17C756A-33I/PT fits your application or whether a newer PIC18F alternative better matches your lifecycle needs.
Bộ thay thế dễ dàng lắp đặt cho PIC17C756A-33I/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 PIC17C756A-33I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Data Bus Width, Operating Temperature, Program Memory Size.
PIC17C756A-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-16E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-33/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C756A-33I/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC17 8-bit RISC |
| Bề rộng đường dữ liệu | 16 bit (instruction) / 8 bit (data) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Tần số xung maksimum | 33 MHz |
| Instruction Cycle | 121 ns |
| Throughput | 8.25 MIPS |
| ADC | 10-bit, integrated |
| I/O Pins | 50 |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | TQFP-64 (PT), 10x10 mm |
| Hardware Multiplier | 8x8 single-cycle |
| Instruction Set | 58 single-word instructions |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC17C756A-33I/PT
| 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 | OSC1 — Crystal/clock input |
| Chân 10 | OSC2 — Crystal/clock output |
| Chân 11 | MCLR — Master clear (reset, active low) |
| Chân 12 | VSS — Ground |
| Chân 13 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 14 | RB1 — PORTB bit 1 |
| Chân 15 | RB2 — PORTB bit 2 |
| Chân 16 | RB3 — PORTB bit 3 |
| Chân 17 | RB4 — PORTB bit 4 |
| Chân 18 | RB5 — PORTB bit 5 |
| Chân 19 | RB6 — PORTB bit 6 |
| Chân 20 | RB7 — PORTB bit 7 |
| Chân 21 | RC0 — PORTC bit 0 |
| Chân 22 | RC1 — PORTC bit 1 |
| Chân 23 | RC2 — PORTC bit 2 |
| Chân 24 | RC3 — PORTC bit 3 |
| Chân 25 | RC4 — PORTC bit 4 |
| Chân 26 | RC5 — PORTC bit 5 |
| Chân 27 | RC6 — PORTC bit 6 |
| Chân 28 | RC7 — PORTC bit 7 |
| Chân 29 | RD0 — PORTD bit 0 |
| Chân 30 | RD1 — PORTD bit 1 |
| Chân 31 | RD2 — PORTD bit 2 |
| Chân 32 | RD3 — PORTD bit 3 |
| Chân 33 | RD4 — PORTD bit 4 |
| Chân 34 | RD5 — PORTD bit 5 |
| Chân 35 | RD6 — PORTD bit 6 |
| Chân 36 | RD7 — PORTD bit 7 |
| Chân 37 | RE0 — PORTE bit 0 |
| Chân 38 | RE1 — PORTE bit 1 |
| Chân 39 | RE2 — PORTE bit 2 |
| Chân 40 | RE3 — PORTE bit 3 |
| Chân 41 | RE4 — PORTE bit 4 |
| Chân 42 | RE5 — PORTE bit 5 |
| Chân 43 | RE6 — PORTE bit 6 |
| Chân 44 | RE7 — PORTE bit 7 |
| 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 |
| Chân 59 | VDD — Positive supply 4.5V-5.5V |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | NC — Not connected (per datasheet) |
| Chân 64 | VDD — Positive supply 4.5V-5.5V |
Ứng dụng tiêu biểu
PIC17C756A-33I/PT phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Motor Control (BLDC and Stepper), HVAC and Appliance Control, Instrumentation Front-Ends, Automotive Body and Chassis Subsystems, Embedded Systems with Mixed Analog/Digital I/O.
Industrial Automation Controllers
The PIC17C756A-33I/PT fits industrial automation with its 32 KB OTP, 902 B RAM, 10-bit ADC, and 50 I/O - enough to handle PLC-style logic, sensor multiplexing, and actuator control on a single chip. Its 33 MHz clock and 121 ns instruction cycle deliver deterministic loop times for real-time ladder-logic replacement, while the 50 I/O pins drive relays, optos, and HMI displays directly. Designers favor this MCU for brownfield machine retrofits where OTP-based firmware is locked at production.
Được đề xuất
Motor Control (BLDC and Stepper)
The PIC17C756A-33I/PT is well suited for BLDC and stepper motor control because its 8.25 MIPS throughput handles field-oriented control math and its 10-bit ADC samples back-EMF and current sense signals accurately. The single-cycle hardware multiplier accelerates Park/Clarke transforms without software overhead. The 50 I/O drive PWM channels, encoder inputs, and fault lines directly, and the 121 ns interrupt latency keeps commutation timing tight across the full 0-33 MHz range.
Được đề xuất
HVAC and Appliance Control
The PIC17C756A-33I/PT powers HVAC and appliance controllers where its 50 I/O read temperature/humidity sensors, drive triacs, and run user-interface keypads without external logic. The integrated 10-bit ADC multiplexes thermistor inputs across multiple zones, while 902 B of RAM holds setpoint tables and scheduling state. OTP memory locks the control firmware, preventing field tampering in safety-critical appliance applications like oven temperature regulation and refrigerator defrost cycles.
Được đề xuất
Instrumentation Front-Ends
The PIC17C756A-33I/PT serves as a data acquisition front-end in instrumentation, leveraging its 10-bit ADC and USART for sensor digitization and serial reporting. With 902 B RAM and 32 KB OTP, it can buffer multi-channel scans before forwarding to a host processor via RS-232 or RS-485. The 33 MHz throughput ensures sampling rates up to ~50 ksps aggregate, suitable for lab instruments and portable data loggers where deterministic acquisition timing matters.
Được đề xuất
Automotive Body and Chassis Subsystems
The PIC17C756A-33I/PT is used in non-safety automotive body modules such as seat controllers, mirror adjusters, and climate-zone drivers where its 50 I/O handle switch matrixes, motor bridges, and LIN/CAN sidecar transceivers. The industrial -40C to +85C grade suits under-dash environments. While not AEC-Q100 qualified, its OTP memory and wide operating range have made it a long-standing choice for body electronics production where firmware is locked at the factory.
Được đề xuất
Embedded Systems with Mixed Analog/Digital I/O
The PIC17C756A-33I/PT is a fit for embedded designs that need both digital I/O expansion and analog digitization in one device. With 50 digital pins plus a multiplexed 10-bit ADC input set, it eliminates a separate ADC chip and reduces BOM cost in sensor-hub designs. The 33 MHz CPU executes user-interface logic, communication stacks, and sampling concurrently, while 902 B RAM keeps buffer space for serial command parsing and sensor averaging in real time.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C756A-33I/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 | PIC17C756A-33E/PT | PIC17C756A-16I/PT | PIC17C756A-16E/PT | PIC17C752-33/PT | PIC17C752-33E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT), 10x10 mm | TQFP-64 (PT), 10x10 mm - same | TQFP-64 (PT), 10x10 mm - same | TQFP-64 (PT), 10x10 mm - same | TQFP-64 (PT), 10x10 mm - same | TQFP-64 (PT), 10x10 mm - same |
| Maximum Clock | 33 MHz | 33 MHz | 16 MHz (-52%) | 16 MHz (-52%) | 33 MHz | 33 MHz |
| Instruction Cycle | 121 ns | 121 ns | 250 ns | 250 ns | 121 ns | 121 ns |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP (-50%) | 16 KB OTP (-50%) |
| ADC | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated | 10-bit integrated |
| I/O Pins | 50 | 50 | 50 | 50 | 50 | 50 |
Bảo phân biệt quan trọng
- Higher program memory than PIC17C752 family drop-ins (vsPIC17C752-33/PT)
- Faster clock than 16 MHz speed grades (vsPIC17C756A-16I/PT)
- Industrial vs extended temperature grade (vsPIC17C756A-33E/PT)
Ghi chú thiết kế
PIC17C756A uses OTP (One-Time-Programmable) memory: code cannot be erased or rewritten. Verify programming flow and confirm OTP bit cost economics before committing to volume production. For prototypes or field-updateable designs, migrate to PIC18F6520 (flash) on the same TQFP-64 footprint.
PIC17C756A requires a stable 4.5V-5.5V supply. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (TQFP-64 has multiple VDD/VSS pairs - pins 12, 58, 59, 64). Add a bulk 10 uF tantalum or ceramic at the regulator output. Brown-out detection is built in; configure BOR via configuration bits to match your application's minimum operating voltage.
Route the 33 MHz crystal traces (OSC1/OSC2) short and symmetrically with a ground guard ring. Place the crystal within 5 mm of the OSC pins. Avoid running PWM or ADC analog traces under the crystal or near PORTA analog pins (RA0-RA7) to prevent digital switching noise coupling into ADC readings.
Estimated: at full 33 MHz and 50 I/O switching, the TQFP-64 device dissipates approximately 200-300 mW depending on I/O loading. TQFP-64 theta_JA is ~50 C/W on a standard 4-layer JEDEC test board, yielding ~15 C temperature rise above ambient. For sealed enclosures with no airflow, derate output current per I/O to keep junction below 125 C.
Thông tin tuân thủ
PIC17C756A-33I/PT is in Microchip Last Time Buy status with the older 'PT' lead-finish designation. RoHS/REACH compliance certificates were not present in the verified distributor data; request a C of C from Microchip before designing into RoHS-restricted markets. The flash-based PIC18F6520 successor is fully RoHS compliant. Not AEC-Q100 qualified.