PIC17C756A-33/PT - 8-bit 33MHz 32KB OTP MCU 64-TQFP | Microchip
Référence : PIC17C756A-33/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.24 | $6,24 |
| 10 | $5.96 | $59,60 |
| 100 | $5.42 | $542,00 |
| 500 | $4.88 | $2 440,00 |
| 1 000 | $4.35 | $4 350,00 |
PIC17C756A-33/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), working RAM, peripherals (timers, ADC, communication ports, PWM), and I/O into one package. PIC17C756A-33/PT belongs to the high-end PIC17C family and the broader 8-bit PIC microcontroller hierarchy; while superseded by the Flash-based PIC18F family, it remains in use in long-lifecycle industrial, instrumentation, and legacy designs where OTP memory and a known instruction set are acceptable. Within the power management and signal-chain tree, PIC17C756A-33/PT serves as the digital control plane that supervises analog and power subsystems rather than as a power device itself.
Key differentiating features include a 12-channel 10-bit Analog-to-Digital Converter (A/D), 4 capture inputs, 3 PWM outputs, an 8x hardware single-cycle multiplier, and a synchronous serial port configurable as 3-wire SPI or 2-wire I2C plus 2 UART channels. External Memory Addressing extends the program/data space beyond the on-chip 32 KB. These peripherals target embedded control tasks that combine analog sensing, motor or actuator drive, and serial communication in one device.
Architecturally, the PIC17C756A-33/PT uses a Harvard RISC core with separate program and data buses, an 8-bit ALU, and dedicated hardware for the 8x8 multiplier so that MULWF executes in a single 121 ns cycle. Operating supply voltage is 4.5 V to 5.5 V and the instruction set is fully orthogonal across all 58 single-word opcodes, simplifying code generation for legacy codebases that target the PIC17C family. Compared with the newer Flash-based PIC18F6520 recommended by Microchip as a successor, the PIC17C756A is OTP (one-time programmable) and is therefore unsuitable for field firmware updates.
Typical applications include industrial process control, motor drive and PWM control loops, instrumentation with on-board A/D conversion, and embedded control boards with multiple serial buses. Because OTP memory is permanently programmed at production time, the part is best suited to high-volume or fully characterized designs rather than prototype or field-serviceable products.
When designing with the PIC17C756A-33/PT, ensure that the system clock source is stable, the MCLR reset network is properly decoupled, and that the analog AVdd/AVss rails are filtered with the values specified in the datasheet. Confirm in-system programming availability by selecting the correct memory type - OTP parts cannot be reprogrammed and the design must be fully validated before committing to production. This page combines verified distributor pricing and parametric data with drop-in cross references and practical design guidance not available from a single distributor listing.
Alternatives de remplacement direct pour PIC17C756A-33/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC17C756A-33/PT (même facteur de forme et même empreinte) — différant par Package, ADC, Operating Temperature, Serial Interfaces, Program Memory Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C756A-16I/PT
✅ Remplacement direct✓ En stock
$11.2 / unité
Voir la fiche technique →PIC17C756A-16E/PT
✅ Remplacement direct✓ En stock
$16.8 / unité
Voir la fiche technique →PIC17C752-33/PT
✅ Remplacement direct✓ En stock
$10.1 / unité
Voir la fiche technique →PIC17C752-33E/PT
✅ Remplacement direct✓ En stock
$11.75 / unité
Voir la fiche technique →PIC17C752-16E/PT
✅ Remplacement direct✓ En stock
$10.85 / unité
Voir la fiche technique →PIC17C756A-33/PT Valeurs maximales et caractéristiques électriques
| Family | PIC17Cxxx |
| Core | 8-bit PIC RISC |
| Instruction Set | 58 single-word instructions |
| Fréquence d'horloge maximale | 33 MHz |
| Instruction Cycle Time | 121 ns |
| Throughput | 8.25 MIPS |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| Digital I/O Pins | 50 |
| Tension d'alimentation | 4.5 V to 5.5 V |
| ADC | 12-channel, 10-bit |
| PWM Outputs | 3 |
| Capture Inputs | 4 |
| Serial Interfaces | SPI (3-wire) or I2C (2-wire), 2x UART |
| Hardware Multiplier | 8x8 single-cycle |
| External Memory Bus | Yes |
| Boîtier | 64-pin TQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C (industrial) |
Configuration des broches de PIC17C756A-33/PT
| Broche 1 | MCLR — Master Clear (reset) input |
| Broche 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Broche 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Broche 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Broche 5 | RA3/AN3 — PORTA bit 3 / Analog input 3 |
| Broche 6 | RA4/AN4 — PORTA bit 4 / Analog input 4 |
| Broche 7 | RA5/AN5 — PORTA bit 5 / Analog input 5 |
| Broche 8 | VSS — Ground |
| Broche 9 | OSC1 — Oscillator input |
| Broche 10 | OSC2 — Oscillator output |
| Broche 11 | RC0 — PORTC bit 0 (digital I/O) |
| Broche 12 | RC1 — PORTC bit 1 (digital I/O) |
| Broche 13 | RC2 — PORTC bit 2 (digital I/O) |
| Broche 14 | RC3 — PORTC bit 3 (digital I/O) |
| Broche 15 | RC4 — PORTC bit 4 (digital I/O) |
| Broche 16 | RC5 — PORTC bit 5 (digital I/O) |
| Broche 17 | RC6 — PORTC bit 6 (digital I/O) |
| Broche 18 | RC7 — PORTC bit 7 (digital I/O) |
| Broche 19 | VSS — Ground |
| Broche 20 | VDD — Positive supply (4.5 V to 5.5 V) |
| Broche 21 | RB0 — PORTB bit 0 (digital I/O) |
| Broche 22 | RB1 — PORTB bit 1 (digital I/O) |
| Broche 23 | RB2 — PORTB bit 2 (digital I/O) |
| Broche 24 | RB3 — PORTB bit 3 (digital I/O) |
| Broche 25 | RB4 — PORTB bit 4 (digital I/O) |
| Broche 26 | RB5 — PORTB bit 5 (digital I/O) |
| Broche 27 | RB6 — PORTB bit 6 (digital I/O) |
| Broche 28 | RB7 — PORTB bit 7 (digital I/O) |
| Broche 29 | RD0 — PORTD bit 0 (digital I/O) |
| Broche 30 | RD1 — PORTD bit 1 (digital I/O) |
| Broche 31 | RD2 — PORTD bit 2 (digital I/O) |
| Broche 32 | RD3 — PORTD bit 3 (digital I/O) |
| Broche 33 | RD4 — PORTD bit 4 (digital I/O) |
| Broche 34 | RD5 — PORTD bit 5 (digital I/O) |
| Broche 35 | RD6 — PORTD bit 6 (digital I/O) |
| Broche 36 | RD7 — PORTD bit 7 (digital I/O) |
| Broche 37 | VSS — Ground |
| Broche 38 | VDD — Positive supply (4.5 V to 5.5 V) |
| Broche 39 | RE0 — PORTE bit 0 (digital I/O) |
| Broche 40 | RE1 — PORTE bit 1 (digital I/O) |
| Broche 41 | RE2 — PORTE bit 2 (digital I/O) |
| Broche 42 | RE3 — PORTE bit 3 (digital I/O) |
| Broche 43 | RE4 — PORTE bit 4 (digital I/O) |
| Broche 44 | RE5 — PORTE bit 5 (digital I/O) |
| Broche 45 | RE6 — PORTE bit 6 (digital I/O) |
| Broche 46 | RE7 — PORTE bit 7 (digital I/O) |
| Broche 47 | AVSS — Analog ground |
| Broche 48 | AVDD — Analog positive supply |
| Broche 49 | AN6 — Analog input 6 |
| Broche 50 | AN7 — Analog input 7 |
| Broche 51 | AN8 — Analog input 8 |
| Broche 52 | AN9 — Analog input 9 |
| Broche 53 | AN10 — Analog input 10 |
| Broche 54 | AN11 — Analog input 11 |
| Broche 55 | VREF+ — ADC voltage reference positive |
| Broche 56 | VREF- — ADC voltage reference negative |
| Broche 57 | RF0 — PORTF bit 0 (digital I/O) |
| Broche 58 | RF1 — PORTF bit 1 (digital I/O) |
| Broche 59 | RF2 — PORTF bit 2 (digital I/O) |
| Broche 60 | RF3 — PORTF bit 3 (digital I/O) |
| Broche 61 | RF4 — PORTF bit 4 (digital I/O) |
| Broche 62 | RF5 — PORTF bit 5 (digital I/O) |
| Broche 63 | RF6 — PORTF bit 6 (digital I/O) |
| Broche 64 | RF7 — PORTF bit 7 (digital I/O) |
Applications typiques
PIC17C756A-33/PT convient pour 6 applications: Industrial Process Control, Motor Drive and PWM Control, Multi-Channel Data Acquisition, Embedded Instrumentation with A/D Conversion, Multi-Bus Communication Controllers, Legacy Industrial Control Board Replacement.
Industrial Process Control
The PIC17C756A-33/PT fits industrial process control boards because it combines 12 channels of 10-bit ADC with 50 digital I/O in a single 64-pin TQFP. At 33 MHz with 121 ns instruction cycle, the 8.25 MIPS throughput is sufficient for PID loops sampling multiple analog sensors at sub-millisecond rates. The 3 PWM outputs directly drive valve actuators or heater controls, while the SPI/I2C/UART ports connect to industrial networks. The 4.5 V to 5.5 V supply matches standard 5 V industrial backplanes.
Recommandé
Motor Drive and PWM Control
PIC17C756A-33/PT is well suited to motor drive control loops where 3 dedicated PWM outputs, 4 capture inputs, and a 33 MHz CPU combine to handle commutation, current sensing, and speed feedback. The 8x8 single-cycle hardware multiplier accelerates the math required for field-oriented control or trapezoidal commutation. The 50 I/O pins accept multiple Hall sensors, encoders, and fault lines without external muxing. OTP memory suits high-volume motor products where firmware is locked at production.
Recommandé
Multi-Channel Data Acquisition
PIC17C756A-33/PT supports multi-channel data acquisition systems with its 12-channel 10-bit ADC sampling analog inputs while the 33 MHz core preprocesses data before forwarding over SPI, I2C, or UART. The 902 bytes of RAM buffer sample bursts between transfers, and the 32 KB OTP stores calibration tables and linearization curves. The external memory bus allows extending storage if sample logs exceed on-chip capacity. Industrial temperature grade via -33I/PT variant handles outdoor or factory installations.
Recommandé
Embedded Instrumentation with A/D Conversion
Embedded instruments such as digital panel meters, sensor transmitters, and bench-top test gear benefit from the PIC17C756A-33/PT's 10-bit ADC, 50 I/O, and multi-protocol serial interfaces. The 33 MHz core runs display refresh, key scanning, and serial output simultaneously without bottlenecks. OTP memory locks the calibration constants at production, ensuring tamper resistance. The 64-TQFP package is suited to compact handheld instrument PCBs with limited board area.
Recommandé
Multi-Bus Communication Controllers
PIC17C756A-33/PT acts as a multi-bus controller bridging SPI slaves, I2C peripherals, and two UART links in gateway and protocol-converter designs. The flexible synchronous serial port supports either 3-wire SPI or 2-wire I2C master/slave, and the dual UARTs handle RS-232 or RS-485 links. With 8.25 MIPS, the CPU parses and reformats frames between buses in real time. The 5 V supply matches legacy industrial UART transceivers without level shifting.
Recommandé
Legacy Industrial Control Board Replacement
PIC17C756A-33/PT remains in demand as a replacement for installed legacy boards where the OTP code is committed to production and the PCB footprint is fixed. Drop-in same-package variants (PIC17C756A-16I/PT, PIC17C756A-16E/PT) and memory-step variants (PIC17C752-33/PT) allow board-level repair without firmware rewrite. For new designs the Flash-based PIC18F family is recommended instead, but PIC17C keeps long-life industrial lines running.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C756A-33/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C756A-16I/PT | PIC17C756A-16E/PT | PIC17C752-33/PT | PIC17C752-33E/PT | PIC17C752-16E/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Clock Frequency | 33 MHz | 16 MHz (-52%) | 16 MHz (-52%) | 33 MHz (same) | 33 MHz (same) | 16 MHz (-52%) |
| Program Memory | 32 KB OTP | 32 KB OTP (same) | 32 KB OTP (same) | 16 KB OTP (-50%) | 16 KB OTP (-50%) | 16 KB OTP (-50%) |
| Data RAM | 902 bytes | 902 bytes (same) | 902 bytes (same) | 902 bytes (same) | 902 bytes (same) | 902 bytes (same) |
| I/O Pins | 50 | 50 (same) | 50 (same) | 50 (same) | 50 (same) | 50 (same) |
| ADC Channels | 12 x 10-bit | 12 x 10-bit (same) | 12 x 10-bit (same) | 12 x 10-bit (same) | 12 x 10-bit (same) | 12 x 10-bit (same) |
| Temperature Grade | Commercial (0C to +70C) | Industrial -40C to +85C | Extended -40C to +125C | Commercial (same) | Extended -40C to +125C | Extended -40C to +125C |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Highest throughput in PIC17C TQFP-64 family (vs PIC17C756A-16I/PT)
- Largest OTP program memory in same TQFP-64 footprint (vs PIC17C752-33/PT)
- Drop-in compatibility with extended-temperature variants (vs PIC17C756A-16E/PT)
Notes de conception
PIC17C756A-33/PT requires a stable 4.5 V to 5.5 V supply with bulk decoupling (typically 10 uF tantalum) plus a 0.1 uF ceramic near each VDD/VSS pair. Because OTP parts cannot be field-updated, brown-out and power-supply glitches can permanently corrupt the locked firmware or cause undefined execution; a hardware watchdog timer or external supervisor (such as MCP130) is recommended for industrial installations.
Route the 64-TQFP (10x10 mm) land pattern with 0.5 mm pitch; use 4-layer PCB with a continuous ground plane under the IC for EMI suppression and thermal spreading. Place the 33 MHz crystal or resonator within 10 mm of OSC1/OSC2 (pins 9 and 10), and keep analog AVdd/AVss traces short and isolated from digital switching lines to keep ADC noise below 1 LSB on the 10-bit converter.
OTP program memory cannot be reprogrammed - validate firmware on a windowed or Flash-equivalent (PIC18F6520) prototype before committing to PIC17C756A-33/PT production runs. Do not assume PIC18F6520 is drop-in compatible despite Microchip's recommendation; pinout differs and the PIC18 instruction set requires firmware rewrite. Plan for end-of-life inventory if designing for production volumes exceeding distributor on-hand stock.
The 12-channel 10-bit ADC achieves best accuracy when AVdd is filtered with a 10 uH inductor and 10 uF capacitor, and VREF+ is decoupled with 0.1 uF ceramic. Avoid switching digital outputs on PORTA pins adjacent to analog inputs during ADC sampling. With 33 MHz core clock, place high-speed digital traces (PWM outputs, SPI clock) away from the AVdd/AVss pair to minimize digital-to-analog crosstalk.
Informations de conformité
RoHS and REACH status not explicitly stated in the verified web data; PIC17C756A family predates strict RoHS classification. Microchip Technology reports conflict-minerals compliance on corporate level but no part-specific statement is available in the cited data.
