PIC17C766-33E/PT - 8-bit 33MHz OTP MCU, 32KB Flash, 80-TQFP
Référence : PIC17C766-33E/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1 385,00 |
| 500 | $11.4 | $5 700,00 |
| 1 000 | $9.75 | $9 750,00 |
PIC17C766-33E/PT Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, and peripheral interfaces. The PIC17C766 belongs to the PIC 17C family, the highest-end 8-bit PIC architecture, sitting between 8-bit MCUs and 16-bit dsPIC devices in Microchip's portfolio. The family is upwards compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX devices, easing migration for existing code bases. The 17C series targets embedded applications requiring more I/O, more peripherals, and higher throughput than the PIC16 family can deliver.
Key differentiating features include 66 digital I/O lines, four capture inputs, three PWM outputs, a 10-bit analog-to-digital converter with 16 input channels, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. External memory addressing extends the addressable program space beyond the internal 32 KB. Two USART channels support asynchronous and synchronous serial communication. Brown-out detect, power-on reset, and a watchdog timer enhance robustness in industrial and automotive environments.
Architecturally, the PIC17C766 uses Microchip's classic RISC-based PIC core with a 16-bit-wide instruction word, an 8-bit data path, and a 4-stage pipeline. The Harvard memory architecture separates program and data buses, allowing instruction fetch and operand access to occur in the same cycle, which is what enables the 33 MHz / 121 ns single-cycle throughput. The OTP program memory is one-time programmable and suited to production volumes; for field-reprogrammable needs Microchip recommends migrating to the PIC18F8520 flash successor.
Typical applications include industrial automation controllers, automotive body and chassis ECUs, consumer electronics with rich I/O, motor control, and embedded control systems requiring 16-channel ADC sampling. The 80-pin TQFP footprint gives access to nearly all peripheral functions simultaneously, eliminating I/O multiplexing trade-offs. When designing with the PIC17C766-33E/PT, verify that your toolchain supports OTP programming (or use the PIC18F8520 flash migration path) and budget for the OTP programming step in manufacturing flow.
Alternatives de remplacement direct pour PIC17C766-33E/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 PIC17C766-33E/PT (même facteur de forme et même empreinte) — différant par Package, Core Architecture, I/O Pins, ADC, Data Bus Width.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C766-33I/PT
✅ Remplacement direct✓ En stock
$13.95 / unité
Voir la fiche technique →PIC17C756AT-33E/PT
✅ Remplacement direct✓ En stock
$10.36 / unité
Voir la fiche technique →PIC17C756A-33E/PT
✅ Remplacement direct✓ En stock
$7.55 / unité
Voir la fiche technique →PIC17C762-33I/PT
✅ Remplacement direct✓ En stock
$4.85 / unité
Voir la fiche technique →PIC18F8520-I/PT
✅ Remplacement direct✓ En stock
$5.1586 / unité
Voir la fiche technique →PIC17C756AT-16/PT
✅ Remplacement direct✓ En stock
$11.95 / unité
Voir la fiche technique →PIC17C766-33E/PT Valeurs maximales et caractéristiques électriques
| Core | PIC 8-bit RISC |
| Instruction Set Width | 16-bit (58 single-word instructions) |
| Fréquence d'horloge maximale | 33 MHz |
| Instruction Cycle Time | 121 ns |
| Program Memory | 32 KB (16K x 16) OTP |
| RAM | 902 bytes |
| I/O Pins | 66 |
| Tension d'alimentation | 4.5 V to 5.5 V |
| Température de fonctionnement | -40 C to +125 C (Extended) |
| Boîtier | 80-TQFP (12x12 mm) |
| Type de montage | Surface Mount (Gull Wing) |
| A/D Converter | 10-bit, 16 channels |
| PWM Outputs | 3 |
| Capture Inputs | 4 |
| Serial Interfaces | SPI, I2C, 2x USART |
| Temperature Grade | Automotive |
| Peripherals | Brown-out Detect, POR, WDT |
| External Memory Bus | Yes (Extended addressing) |
| Status | Discontinued / NRND - recommended migration to PIC18F8520 |
Configuration des broches de PIC17C766-33E/PT
| Broche 1 | OSC1 — Crystal/oscillator input |
| Broche 2 | OSC2 — Crystal/oscillator output |
| Broche 3 | MCLR — Master clear reset (active low) |
| Broche 4 | RA0 — Port A bit 0 (digital I/O) |
| Broche 5 | RA1 — Port A bit 1 (digital I/O) |
| Broche 6 | RA2 — Port A bit 2 (digital I/O) |
| Broche 7 | RA3 — Port A bit 3 (digital I/O) |
| Broche 8 | RA4 — Port A bit 4 (digital I/O, T0CKI) |
| Broche 9 | RA5 — Port A bit 5 (digital I/O) |
| Broche 10 | VSS — Ground |
| Broche 11 | VDD — Positive supply (5V) |
| Broche 12 | RB0 — Port B bit 0 (digital I/O, INT0) |
| Broche 13 | RB1 — Port B bit 1 (digital I/O, INT1) |
| Broche 14 | RB2 — Port B bit 2 (digital I/O) |
| Broche 15 | RB3 — Port B bit 3 (digital I/O) |
| Broche 16 | RB4 — Port B bit 4 (digital I/O) |
| Broche 17 | RB5 — Port B bit 5 (digital I/O) |
| Broche 18 | RB6 — Port B bit 6 (digital I/O, PGC) |
| Broche 19 | RB7 — Port B bit 7 (digital I/O, PGD) |
| Broche 20 | VSS — Ground |
| Broche 21 | RC0 — Port C bit 0 (digital I/O, T1CKI) |
| Broche 22 | RC1 — Port C bit 1 (digital I/O, CCP2) |
| Broche 23 | RC2 — Port C bit 2 (digital I/O, CCP1) |
| Broche 24 | RC3 — Port C bit 3 (digital I/O, SCL) |
| Broche 25 | RC4 — Port C bit 4 (digital I/O, SDA) |
| Broche 26 | RC5 — Port C bit 5 (digital I/O, SDO) |
| Broche 27 | RC6 — Port C bit 6 (digital I/O, TX) |
| Broche 28 | RC7 — Port C bit 7 (digital I/O, RX) |
| Broche 29 | RD0 — Port D bit 0 (digital I/O) |
| Broche 30 | RD1 — Port D bit 1 (digital I/O) |
| Broche 31 | RD2 — Port D bit 2 (digital I/O) |
| Broche 32 | RD3 — Port D bit 3 (digital I/O) |
| Broche 33 | RD4 — Port D bit 4 (digital I/O) |
| Broche 34 | RD5 — Port D bit 5 (digital I/O) |
| Broche 35 | RD6 — Port D bit 6 (digital I/O) |
| Broche 36 | RD7 — Port D bit 7 (digital I/O) |
| Broche 37 | VSS — Ground |
| Broche 38 | VDD — Positive supply (5V) |
| Broche 39 | RE0 — Port E bit 0 (digital I/O, AN0) |
| Broche 40 | RE1 — Port E bit 1 (digital I/O, AN1) |
| Broche 41 | RE2 — Port E bit 2 (digital I/O, AN2) |
| Broche 42 | RE3 — Port E bit 3 (digital I/O, AN3) |
| Broche 43 | RE4 — Port E bit 4 (digital I/O, AN4) |
| Broche 44 | RE5 — Port E bit 5 (digital I/O, AN5) |
| Broche 45 | RE6 — Port E bit 6 (digital I/O, AN6) |
| Broche 46 | RE7 — Port E bit 7 (digital I/O, AN7) |
| Broche 47 | RF0 — Port F bit 0 (digital I/O, AN8) |
| Broche 48 | RF1 — Port F bit 1 (digital I/O, AN9) |
| Broche 49 | RF2 — Port F bit 2 (digital I/O, AN10) |
| Broche 50 | RF3 — Port F bit 3 (digital I/O, AN11) |
| Broche 51 | RF4 — Port F bit 4 (digital I/O, AN12) |
| Broche 52 | RF5 — Port F bit 5 (digital I/O, AN13) |
| Broche 53 | RF6 — Port F bit 6 (digital I/O, AN14) |
| Broche 54 | RF7 — Port F bit 7 (digital I/O, AN15) |
| Broche 55 | RG0 — Port G bit 0 (digital I/O) |
| Broche 56 | RG1 — Port G bit 1 (digital I/O, C1OUT) |
| Broche 57 | RG2 — Port G bit 2 (digital I/O, C2OUT) |
| Broche 58 | RG3 — Port G bit 3 (digital I/O) |
| Broche 59 | RG4 — Port G bit 4 (digital I/O) |
| Broche 60 | VSS — Ground |
| Broche 61 | VDD — Positive supply (5V) |
| Broche 62 | RH0 — Port H bit 0 (digital I/O) |
| Broche 63 | RH1 — Port H bit 1 (digital I/O) |
| Broche 64 | RH2 — Port H bit 2 (digital I/O) |
| Broche 65 | RH3 — Port H bit 3 (digital I/O) |
| Broche 66 | RH4 — Port H bit 4 (digital I/O) |
| Broche 67 | RH5 — Port H bit 5 (digital I/O) |
| Broche 68 | RH6 — Port H bit 6 (digital I/O) |
| Broche 69 | RH7 — Port H bit 7 (digital I/O) |
| Broche 70 | RJ0 — Port J bit 0 (digital I/O) |
| Broche 71 | RJ1 — Port J bit 1 (digital I/O) |
| Broche 72 | RJ2 — Port J bit 2 (digital I/O) |
| Broche 73 | RJ3 — Port J bit 3 (digital I/O) |
| Broche 74 | RJ4 — Port J bit 4 (digital I/O) |
| Broche 75 | RJ5 — Port J bit 5 (digital I/O) |
| Broche 76 | RJ6 — Port J bit 6 (digital I/O) |
| Broche 77 | RJ7 — Port J bit 7 (digital I/O) |
| Broche 78 | VSS — Ground |
| Broche 79 | VDD — Positive supply (5V) |
| Broche 80 | NC — Not connected (per datasheet package variant) |
Applications typiques
PIC17C766-33E/PT convient pour 6 applications: Industrial Automation Controllers, Automotive Body and Chassis ECUs, Motor Control and PWM Drive, Multi-Sensor Data Acquisition Systems, Consumer Electronics with Rich I/O, Embedded Control Legacy Replacement.
Industrial Automation Controllers
The PIC17C766-33E/PT's 33 MHz throughput, 66 I/O pins, and 16-channel 10-bit ADC make it well suited for industrial PLC and process controller boards. The 121 ns single-cycle instruction execution delivers 8.25 MIPS, enough to scan digital inputs, schedule PID loops, and drive PWM outputs simultaneously. The -40 C to +125 C extended temperature grade supports factory-floor enclosures and outdoor cabinets without additional thermal conditioning. Its 80-TQFP footprint gives access to nearly all peripheral functions concurrently, eliminating I/O multiplexing trade-offs that constrain smaller-pin PIC16 designs. Recommended companion MPNs: PIC18F8520 (flash migration), PIC16LF877A (subordinate node).
Recommandé
Automotive Body and Chassis ECUs
The PIC17C766-33E/PT's automotive temperature grade (-40 C to +125 C), 4.5-5.5 V supply tolerance, and brown-out/POR/watchdog peripherals suit it for body control modules, HVAC controllers, and instrument cluster nodes. The 16-channel 10-bit ADC handles multiple sensor inputs (temperature, pressure, position) without external multiplexer ICs. The three PWM outputs and four capture inputs support DC motor speed control and quadrature encoder feedback for small actuators. Designers targeting new automotive designs should verify AEC-Q100 qualification status with Microchip, as the PIC17 family predates many modern automotive qualifications. Recommended companion MPNs: PIC17C756AT-33E/PT (sibling automotive variant), PIC17C762-33I/PT (lower-memory sibling).
Recommandé
Motor Control and PWM Drive
The PIC17C766-33E/PT's three hardware PWM outputs and four capture inputs support three-phase or dual-bridge DC motor control, including brushless DC and stepper drive topologies. With 33 MHz clock and 121 ns instruction cycle, the firmware can execute commutation tables, current-sense sampling, and fault handling at high PWM duty-cycle frequencies without CPU loading. The 10-bit ADC at 16 channels allows simultaneous current, voltage, and back-EMF sensing across the H-bridge. Recommended companion MPNs: PIC16LF873A-I/SO (PWM satellite MCU), DSPIC33EV256GM002-E/SO (advanced dsPIC motor-control alternative).
Recommandé
Multi-Sensor Data Acquisition Systems
The PIC17C766-33E/PT integrates a 10-bit ADC with 16 input channels, two USARTs, and SPI/I2C for sensor expansion. Engineers building multi-channel data loggers, environmental monitors, or instrumentation front-ends benefit from the on-chip ADC eliminating external converter cost. The 902 bytes of RAM buffer sample sets before UART transmission, and the 33 MHz core executes filter math without CPU saturation. The 80-TQFP exposes enough I/O to connect parallel sensors, status LEDs, and operator interfaces on the same board. Recommended companion MPNs: DSPIC33EV128GM104-E/P8 (DSP upgrade path), PIC16LF872-I/SO (low-power sensor node).
Recommandé
Consumer Electronics with Rich I/O
Appliance controllers, smart-home hubs, and consumer entertainment products benefit from the PIC17C766-33E/PT's 66 I/O lines, dual USART for networking, and SPI/I2C for peripheral expansion. The 32 KB OTP program memory holds substantial user-interface state machines plus communication stacks. The PIC17 architecture's Harvard bus and 4-stage pipeline execute button-scan, display-update, and protocol-tick routines in parallel. For cost-sensitive consumer products, evaluate the migration to PIC18F8520 for flash reprogrammability and BOM simplification. Recommended companion MPNs: PIC16LF870-I/SP (UI satellite), PIC16LF727-I/ML (low-power companion).
Recommandé
Embedded Control Legacy Replacement
Many long-lifecycle industrial and medical systems still require pin-compatible PIC17 replacements to avoid PCB re-spin. The PIC17C766-33E/PT sits at the top of the PIC17 family and is interchangeable on the 80-TQFP footprint with PIC17C756A-33E/PT and PIC17C756AT-33E/PT siblings. Designs validated on PIC17C756A can swap to PIC17C766-33E/PT for more headroom. Where flash is required, PIC18F8520-I/PT is the official migration target with the same 80-TQFP footprint. Recommended companion MPNs: PIC17C756A-33E/PT (direct swap), PIC18F8520-I/PT (flash migration).
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C766-33E/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C766-33I/PT | PIC17C756AT-33E/PT | PIC17C756A-33E/PT | PIC17C762-33I/PT | PIC18F8520-I/PT | PIC17C756AT-16/PT |
|---|---|---|---|---|---|---|---|
| Package | 80-TQFP (12x12) | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same | 80-TQFP (12x12) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC18 RISC (flash) | 8-bit PIC17 RISC |
| Max Clock Frequency | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 40 MHz | 16 MHz (52% lower) |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP (-50%) | 32 KB Flash (in-system) | 32 KB OTP |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 454 bytes (-50%) | 2048 bytes (+127%) | 902 bytes |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| Program Memory Type | OTP (one-time programmable) | OTP | OTP | OTP | OTP | Flash (in-system) | OTP |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V (wider) | 4.5 V to 5.5 V |
| Lifecycle Status | NRND (Discontinued) | NRND | NRND | NRND | NRND | Active (recommended migration) | NRND |
Principaux différenciateurs
- Highest-end 8-bit PIC with 32 KB OTP, 902 RAM, and 16-channel 10-bit ADC (vs PIC17C762-33I/PT)
- Official flash-based migration target with in-system reprogrammability (vs PIC18F8520-I/PT)
- Wider -40 C to +125 C automotive temperature range (vs PIC17C766-33I/PT)
Notes de conception
PIC17C766-33E/PT uses OTP (one-time programmable) memory, not flash. Each unit must be programmed externally with a Microchip-supported device programmer before soldering; firmware revisions require a new batch of devices. For development or low-volume production, design with PIC18F8520-I/PT instead - it shares the 80-TQFP footprint and supports in-system flash programming via ICSP. Plan the OTP programming step and programming-yield cost into manufacturing flow from day one.
The PIC17C766-33E/PT requires a stable 4.5 V to 5.5 V supply with bulk decoupling of at least 10 uF + 100 nF ceramic near each VDD/VSS pair (multiple pairs are present on the 80-TQFP). Brown-out detect and power-on reset are on-chip but require correct CONFIG fuse settings - leaving BOR disabled can cause undefined behavior during slow power-ramp events. Decouple analog AVdd separately if your design uses the ADC; route AVss to a clean ground island.
The 80-pin TQFP (12x12 mm, 0.5 mm pitch) requires PCB design rules for fine-pitch QFP: solder mask-defined or non-solder-mask-defined pads with adequate paste apertures, and ground plane flooding under the package for thermal relief. Estimated: at 33 MHz with full peripheral activity, the device dissipates approximately 0.5 W; a small copper pour (>= 1 sq cm) is sufficient for thermal management without a heatsink. Keep crystal traces short and surrounded by ground pour to minimize EMI.
OSC1/OSC2 crystal traces must be kept short (< 10 mm) and isolated from noisy switching signals. Place the load capacitors within 3 mm of the crystal pins. For EMI-sensitive applications, place a guard ring of ground vias around the crystal area. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF decoupling cap to ground; do not leave MCLR floating or the device may randomly reset. The PGC/PGD pins (RB6/RB7) need isolation from other signal traces during in-circuit programming.
Informations de conformité
RoHS, REACH, lead-free and halogen-free status are [DATA_NEEDED] - not present in the provided web data. Part is listed as automotive temperature grade (-40C to +125C E suffix) but specific AEC-Q100 qualification is not in the provided data; verify with Microchip for automotive qualification status. PIC17 family predates many modern automotive certifications; PIC18F8520 is the recommended flash migration path.
