PIC17C756A-33I/PT - 33MHz 8-bit OTP MCU, 32KB | Microchip
Référence : PIC17C756A-33I/PT ⚠ Dernier achat| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.53 | $18,53 |
| 10 | $16.42 | $164,20 |
| 100 | $13.95 | $1 395,00 |
| 500 | $11.84 | $5 920,00 |
| 1 000 | $10.2 | $10 200,00 |
PIC17C756A-33I/PT Présentation
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.
Alternatives de remplacement direct pour PIC17C756A-33I/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-33I/PT (même facteur de forme et même empreinte) — différant par ADC, Package, Data Bus Width, Operating Temperature, Program Memory Size.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C756A-33E/PT
✅ Remplacement direct✓ En stock
$7.55 / unité
Voir la fiche technique →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 →PIC17C756A-33I/PT Valeurs maximales et caractéristiques électriques
| Core | PIC17 8-bit RISC |
| Largeur du bus de données | 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 |
| Fréquence d'horloge maximale | 33 MHz |
| Instruction Cycle | 121 ns |
| Throughput | 8.25 MIPS |
| ADC | 10-bit, integrated |
| I/O Pins | 50 |
| Tension d'alimentation | 4.5 V to 5.5 V |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Boîtier | TQFP-64 (PT), 10x10 mm |
| Hardware Multiplier | 8x8 single-cycle |
| Instruction Set | 58 single-word instructions |
| Type de montage | Surface Mount |
Configuration des broches de PIC17C756A-33I/PT
| Broche 1 | RA0/AN0 — PORTA bit 0 / ADC analog input 0 |
| Broche 2 | RA1/AN1 — PORTA bit 1 / ADC analog input 1 |
| Broche 3 | RA2/AN2 — PORTA bit 2 / ADC analog input 2 |
| Broche 4 | RA3/AN3 — PORTA bit 3 / ADC analog input 3 |
| Broche 5 | RA4/AN4 — PORTA bit 4 / ADC analog input 4 |
| Broche 6 | RA5/AN5 — PORTA bit 5 / ADC analog input 5 |
| Broche 7 | RA6/AN6 — PORTA bit 6 / ADC analog input 6 |
| Broche 8 | RA7/AN7 — PORTA bit 7 / ADC analog input 7 |
| Broche 9 | OSC1 — Crystal/clock input |
| Broche 10 | OSC2 — Crystal/clock output |
| Broche 11 | MCLR — Master clear (reset, active low) |
| Broche 12 | VSS — Ground |
| Broche 13 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 14 | RB1 — PORTB bit 1 |
| Broche 15 | RB2 — PORTB bit 2 |
| Broche 16 | RB3 — PORTB bit 3 |
| Broche 17 | RB4 — PORTB bit 4 |
| Broche 18 | RB5 — PORTB bit 5 |
| Broche 19 | RB6 — PORTB bit 6 |
| Broche 20 | RB7 — PORTB bit 7 |
| Broche 21 | RC0 — PORTC bit 0 |
| Broche 22 | RC1 — PORTC bit 1 |
| Broche 23 | RC2 — PORTC bit 2 |
| Broche 24 | RC3 — PORTC bit 3 |
| Broche 25 | RC4 — PORTC bit 4 |
| Broche 26 | RC5 — PORTC bit 5 |
| Broche 27 | RC6 — PORTC bit 6 |
| Broche 28 | RC7 — PORTC bit 7 |
| Broche 29 | RD0 — PORTD bit 0 |
| Broche 30 | RD1 — PORTD bit 1 |
| Broche 31 | RD2 — PORTD bit 2 |
| Broche 32 | RD3 — PORTD bit 3 |
| Broche 33 | RD4 — PORTD bit 4 |
| Broche 34 | RD5 — PORTD bit 5 |
| Broche 35 | RD6 — PORTD bit 6 |
| Broche 36 | RD7 — PORTD bit 7 |
| Broche 37 | RE0 — PORTE bit 0 |
| Broche 38 | RE1 — PORTE bit 1 |
| Broche 39 | RE2 — PORTE bit 2 |
| Broche 40 | RE3 — PORTE bit 3 |
| Broche 41 | RE4 — PORTE bit 4 |
| Broche 42 | RE5 — PORTE bit 5 |
| Broche 43 | RE6 — PORTE bit 6 |
| Broche 44 | RE7 — PORTE bit 7 |
| Broche 45 | RF0 — PORTF bit 0 |
| Broche 46 | RF1 — PORTF bit 1 |
| Broche 47 | RF2 — PORTF bit 2 |
| Broche 48 | RF3 — PORTF bit 3 |
| Broche 49 | RF4 — PORTF bit 4 |
| Broche 50 | RF5 — PORTF bit 5 |
| Broche 51 | RF6 — PORTF bit 6 |
| Broche 52 | RF7 — PORTF bit 7 |
| Broche 53 | RG0 — PORTG bit 0 |
| Broche 54 | RG1 — PORTG bit 1 |
| Broche 55 | RG2 — PORTG bit 2 |
| Broche 56 | RG3 — PORTG bit 3 |
| Broche 57 | RG4 — PORTG bit 4 |
| Broche 58 | VSS — Ground |
| Broche 59 | VDD — Positive supply 4.5V-5.5V |
| Broche 60 | NC — Not connected (per datasheet) |
| Broche 61 | NC — Not connected (per datasheet) |
| Broche 62 | NC — Not connected (per datasheet) |
| Broche 63 | NC — Not connected (per datasheet) |
| Broche 64 | VDD — Positive supply 4.5V-5.5V |
Applications typiques
PIC17C756A-33I/PT convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C756A-33I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Higher program memory than PIC17C752 family drop-ins (vs PIC17C752-33/PT)
- Faster clock than 16 MHz speed grades (vs PIC17C756A-16I/PT)
- Industrial vs extended temperature grade (vs PIC17C756A-33E/PT)
Notes de conception
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.
Informations de conformité
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.