PIC17C756A-16I/PT - 8-bit OTP MCU, 16MHz, 32KB EPROM | Microchip
N.º da peça: PIC17C756A-16I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.75 | $18,75 |
| 10 | $16.95 | $169,50 |
| 100 | $14.5 | $1.450,00 |
| 500 | $12.85 | $6.425,00 |
| 1.000 | $11.2 | $11.200,00 |
PIC17C756A-16I/PT Visão geral
An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path and instruction set, with non-volatile program memory that is user-programmable exactly once (OTP, as opposed to flash). The PIC17C756A belongs to the broader category of microcontrollers (MCUs), which are integrated circuits containing a CPU core, RAM, ROM/EPROM/Flash, and programmable I/O. Within that hierarchy, this part is a special-purpose industrial-control MCU optimized for embedded control with on-chip ADC and PWM.
The PIC17C756A features only 58 single-word instructions, all single-cycle except for program branches and table reads/writes, which are two-cycle. The 121 ns instruction cycle (8.25 MIPS at 33 MHz clock input) is achieved through an 8-bit single-cycle hardware multiplier, accelerating arithmetic-heavy control loops. An external memory interface allows the PIC17C756A to address additional program/data memory beyond its internal 32 KB, providing migration headroom. Two USART modules, a watchdog timer, and brown-out reset support robust field deployment.
Architecturally, the PIC17C756A uses a RISC-style Harvard architecture with separate program and data buses, allowing instruction fetch and operand access to occur in the same cycle. EPROM-based program memory (rather than flash) means code is committed at the time of programming; this suits mature, fixed-function designs where the cost of flash process is not justified.
Typical applications include industrial automation controllers, motor control front-ends, sensor signal conditioning, HVAC control boards, and embedded instrumentation requiring 10-bit ADC resolution and multiple PWM channels. The 64-pin TQFP provides ample I/O for keypad scanning, LCD driving, and parallel bus expansion.
When designing with this part, verify toolchain support: MPLAB IDE with C17 or MPASM compilers is required for OTP programming. Industrial designers should also note that newer replacements such as the PIC18F6520 (flash-based) are recommended by Microchip for new designs, while the PIC17C756A remains in service for legacy and long-lifecycle programs.
This page synthesizes distributor inventory, OTP-versus-flash migration notes, and pin-compatible PIC17C family alternatives not found on a single distributor listing.
Alternativas drop-in para PIC17C756A-16I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC17C756A-16I/PT (mesmo formato e footprint) — diferindo em ADC, Data Bus Width, Package, Operating Temperature, Program Memory Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC17C756A-16E/PT
✅ Drop-In✓ Em estoque
$16.8 / unidade
Ver ficha técnica →PIC17C756A-16/PT
✅ Drop-In✓ Em estoque
$11.95 / unidade
Ver ficha técnica →PIC17C756A-33I/PT
✅ Drop-In✓ Em estoque
$10.2 / unidade
Ver ficha técnica →PIC17C752-16I/PT
✅ Drop-In✓ Em estoque
$6.13 / unidade
Ver ficha técnica →PIC17C756A-16I/PT Classificações máximas e características elétricas
| Family | PIC17C |
| Core | 8-bit PIC RISC |
| Largura do barramento de dados | 16 bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Frequência máxima de clock | 16 MHz |
| Instruction Cycle Time | 121 ns (at 33 MHz) |
| MIPS | 8.25 MIPS |
| Number of I/O Pins | 50 |
| ADC | 12 channels, 10-bit |
| PWM Channels | 3 |
| Capture Inputs | 4 |
| Serial Interfaces | 1x SPI/I2C, 2x USART |
| Tensão de alimentação | 4.5 V to 5.5 V |
| Temperatura de operação | -40 °C to +85 °C (Industrial) |
| Encapsulamento | 64-pin TQFP (PT), 10x10 mm |
| Tipo de montagem | Surface Mount |
| Hardware Multiplier | 8-bit single-cycle |
| External Memory Interface | Yes |
| Number of Instructions | 58 single-word |
| Status RoHS | unknown |
Configuração de pinos do PIC17C756A-16I/PT
| Pino 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pino 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pino 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pino 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Pino 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Pino 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Pino 7 | OSC1 — Oscillator input |
| Pino 8 | OSC2 — Oscillator output |
| Pino 9 | MCLR — Master clear / reset input |
| Pino 10 | VDD — Positive supply |
| Pino 11 | VSS — Ground |
| Pino 12 | RB0/INT — Port B bit 0 / External interrupt |
| Pino 13 | RB1 — Port B bit 1 |
| Pino 14 | RB2 — Port B bit 2 |
| Pino 15 | RB3 — Port B bit 3 |
| Pino 16 | RB4 — Port B bit 4 |
| Pino 17 | RB5 — Port B bit 5 |
| Pino 18 | RB6 — Port B bit 6 |
| Pino 19 | RB7 — Port B bit 7 |
| Pino 20 | RC0 — Port C bit 0 |
| Pino 21 | RC1 — Port C bit 1 |
| Pino 22 | RC2 — Port C bit 2 |
| Pino 23 | RC3 — Port C bit 3 |
| Pino 24 | RC4 — Port C bit 4 |
| Pino 25 | RC5 — Port C bit 5 |
| Pino 26 | RC6 — Port C bit 6 |
| Pino 27 | RC7 — Port C bit 7 |
| Pino 28 | RD0 — Port D bit 0 |
| Pino 29 | RD1 — Port D bit 1 |
| Pino 30 | RD2 — Port D bit 2 |
| Pino 31 | RD3 — Port D bit 3 |
| Pino 32 | RD4 — Port D bit 4 |
| Pino 33 | RD5 — Port D bit 5 |
| Pino 34 | RD6 — Port D bit 6 |
| Pino 35 | RD7 — Port D bit 7 |
| Pino 36 | RE0 — Port E bit 0 |
| Pino 37 | RE1 — Port E bit 1 |
| Pino 38 | RE2 — Port E bit 2 |
| Pino 39 | RE3 — Port E bit 3 |
| Pino 40 | VDD — Positive supply |
| Pino 41 | VSS — Ground |
| Pino 42 | RF0 — Port F bit 0 |
| Pino 43 | RF1 — Port F bit 1 |
| Pino 44 | RF2 — Port F bit 2 |
| Pino 45 | RF3 — Port F bit 3 |
| Pino 46 | RF4 — Port F bit 4 |
| Pino 47 | RF5 — Port F bit 5 |
| Pino 48 | RF6 — Port F bit 6 |
| Pino 49 | RF7 — Port F bit 7 |
| Pino 50 | RG0 — Port G bit 0 |
| Pino 51 | RG1 — Port G bit 1 |
| Pino 52 | RG2 — Port G bit 2 |
| Pino 53 | RG3 — Port G bit 3 |
| Pino 54 | AVDD — Analog supply |
| Pino 55 | AVSS — Analog ground |
| Pino 56 | AN6 — Analog input 6 |
| Pino 57 | AN7 — Analog input 7 |
| Pino 58 | AN8 — Analog input 8 |
| Pino 59 | AN9 — Analog input 9 |
| Pino 60 | AN10 — Analog input 10 |
| Pino 61 | AN11 — Analog input 11 |
| Pino 62 | VDD — Positive supply |
| Pino 63 | VSS — Ground |
| Pino 64 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC17C756A-16I/PT é adequado para 6 aplicaçãos: Industrial Automation Controllers, Motor Control Front-Ends, HVAC Control Boards, Embedded Instrumentation, Sensor Signal Conditioning, Legacy Replacement / Service Stocking.
Industrial Automation Controllers
The PIC17C756A-16I/PT's 12-channel 10-bit ADC and 3 PWM channels make it a strong fit for industrial control boards that read multiple analog sensors (temperature, pressure, flow) and drive motor or actuator outputs. With 50 digital I/O and 902 bytes RAM, the MCU handles keypad scanning, LCD driving, and on-board signal conditioning in a single chip. The 64-pin TQFP keeps the design footprint compact for DIN-rail mounted PLC modules.
Recomendado
Motor Control Front-Ends
Three PWM outputs and four capture inputs on the PIC17C756A-16I/PT support three-phase or dual-axis motor control, with capture inputs enabling precise tachometer and encoder feedback. The 8.25 MIPS throughput (at 33 MHz grade) handles field-oriented control loops at modest PWM frequencies, while the 121 ns instruction cycle keeps ISR latency predictable. Industrial temperature grade suits factory-floor deployment.
Recomendado
HVAC Control Boards
The PIC17C756A-16I/PT suits HVAC controller boards where multiple analog inputs (thermistors, pressure transducers, humidity sensors) feed 12 ADC channels and outputs drive fans, compressors, and dampers via PWMs. With 32 KB OTP program memory, complex scheduling and PID loops can be encoded once and shipped locked - the OTP model provides security against firmware reverse engineering, important for commercial HVAC systems.
Recomendado
Embedded Instrumentation
The PIC17C756A-16I/PT's 12-bit ADC channels and 50 I/O support bench-top and field-portable instruments such as data loggers, environmental monitors, and process calibrators. The 902-byte RAM accommodates circular sample buffers, while 32 KB OTP holds lookup tables for sensor linearization. USART modules enable RS-232/RS-485 communication with host PCs or remote sensors.
Recomendado
Sensor Signal Conditioning
Bridge sensors, RTDs, and strain gauges produce low-level analog signals that the PIC17C756A-16I/PT can digitize through its 10-bit ADC with on-chip PGA-like configuration. With 50 I/O, the MCU can multiplex multiple sensor channels, perform cold-junction compensation in firmware, and drive LCD or seven-segment displays. The OTP program memory locks calibration constants at production.
Recomendado
Legacy Replacement / Service Stocking
Many OEMs continue to ship products originally designed around the PIC17C756A-16I/PT and need ongoing supply for warranty repair and field service. Keeping inventory of the -I/PT variant preserves the original bill of materials and avoids requalification. Microchip continues to support production of PIC17C parts for these long-lifecycle programs, often through factory-direct orders rather than distributor channels.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17C756A-16I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC17C756A-16E/PT | PIC17C756A-16/PT | PIC17C756A-33I/PT | PIC17C752-16I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP |
| RAM Size | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 454 bytes |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 16 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| I/O Pins | 50 | 50 | 50 | 50 | 50 |
| ADC | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit |
| Lifecycle Status | active | active | active | active | active |
Principais diferenciais
- Highest-density OTP program memory in the PIC17C TQFP family (vs PIC17C752-16I/PT)
- Industrial temperature grade with same silicon as commercial variant (vs PIC17C756A-16/PT)
- Drop-in option for higher throughput without board rework (vs PIC17C756A-16I/PT)
Notas de projeto
The PIC17C756A-16I/PT operates from a single 4.5-5.5 V supply; place a 100 nF decoupling capacitor close to each VDD/VSS pair (three pairs on the 64-pin TQFP) and a bulk 10 uF tantalum or ceramic on the board-level supply rail. The analog supply pins AVDD/AVSS should be bypassed separately with a 100 nF capacitor to keep ADC readings stable when digital I/O switches. Brown-out reset is enabled by configuration bits to prevent code execution at low VDD.
On the 64-pin TQFP layout, route the oscillator traces (OSC1/OSC2) as short as possible and keep them away from switching I/O lines to avoid injecting noise into the clock. If using a crystal, place the load capacitors within 5 mm of the OSC pins. The MCLR pin should have a 10 kohm pull-up to VDD; add a diode to clamp ESD if the pin is accessible externally.
Do not assume the OTP program memory is erasable - once programmed, the PIC17C756A-16I/PT cannot be rewritten. Engineers migrating from flash PIC18 parts must remember to set the configuration bits correctly before programming, because they cannot be changed in-circuit. Also note that the analog-input pins are shared with Port A and Port F; configure ADCON1 before reading analog values to avoid digital-crosstalk contamination of ADC readings.
Informações de conformidade
RoHS, REACH, lead-free, and halogen-free status not displayed in the retrieved Microchip product page snippets for this OTP legacy variant; verify specific date/lot code with Microchip or authorized distributor before EU-market deployment.
