PIC17C766-16I/L - 8-Bit 16MHz OTP MCU, 32KB, 84-PLCC | Microchip
Référence : PIC17C766-16I/L ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $12.85 | $12,85 |
| 10 | $11.78 | $117,80 |
| 100 | $10.42 | $1 042,00 |
| 500 | $9.15 | $4 575,00 |
| 1 000 | $8.2 | $8 200,00 |
PIC17C766-16I/L Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals. The 8-bit MCU class predates 16-bit and 32-bit Cortex-M parts and remains widely deployed in cost-sensitive, deterministic control applications. Within Microchip's portfolio, the PIC17C family sits between the PIC16 mid-range and the enhanced PIC18 devices, offering more peripherals and code space than PIC16 while remaining upward-compatible with PIC12Cxxx and PIC16Cxx instruction sets - only 58 single-word instructions to learn, with all instructions executing in a single cycle except program branches and table reads/writes, which take two cycles.
Key differentiating features of the PIC17C766 include its 84-pin PLCC footprint supporting 66 I/O lines, the integrated 10-bit ADC, hardware multiplier for fast DSP-style math, and the 32 KB (16K x 16) OTP program memory that is one-time programmable but production-friendly. The 16 MHz oscillator with 4-clock internal divider yields the 121 ns instruction cycle, and the device supports a wide peripheral set including USART, capture/compare/PWM, and timers suitable for motor and power conversion control.
Architecturally, the PIC17C766 uses a Harvard bus (separate program and data paths) and an enhanced 8-bit core with a hardware multiply engine; combined with the OTP memory it is well suited to volume production where firmware is fixed at the time of manufacture. Per the manufacturer datasheet, the PIC17C766 is the largest-memory member of the PIC17C family and is now designated NRND/EOL with the PIC18F8520 recommended as the modern flash-based successor.
Typical applications include industrial motor control, HVAC actuators, automotive body and chassis subsystems, white goods and appliance control, and embedded control boards that need many parallel I/O lines plus on-chip ADC. The 84-pin PLCC package is also attractive for legacy through-hole designs and socketed prototyping. When designing with this part, plan for OTP-only programming (code must be committed at production time) and verify supply availability since the device is being phased out in favor of PIC18F flash parts.
Alternatives de remplacement direct pour PIC17C766-16I/L — 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 PIC17C766-16I/L (même facteur de forme et même empreinte) — différant par Package, Core Architecture, Mounting Type, Operating Temperature, Data Bus Width.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C766-16I/PT
✅ Remplacement direct✓ En stock
$11.5 / unité
Voir la fiche technique →PIC17C766-16E/PT
✅ Remplacement direct✓ En stock
$9.95 / unité
Voir la fiche technique →PIC17C756A-16I/PT
✅ Remplacement direct✓ En stock
$11.2 / unité
Voir la fiche technique →PIC17C762-16I/PT
✅ Remplacement direct✓ En stock
$10.05 / unité
Voir la fiche technique →PIC17C762-16/PT
✅ Remplacement direct✓ En stock
$9.25 / unité
Voir la fiche technique →PIC17C766-16I/L Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit (Harvard, RISC) |
| Instruction Set | 58 single-word instructions (PIC17C enhanced) |
| Largeur du bus de données | 8-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Fréquence d'horloge maximale | 16 MHz |
| Instruction Cycle Time | 121 ns (8.25 MIPS) |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 66 |
| ADC | 10-bit, multi-channel |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| Boîtier | 84-pin PLCC (LCC-84 / QCCJ) |
| Type de montage | Surface Mount / Socketed |
| Lead Finish / Terminal Form | J-bend (PLCC) |
| Recommended Successor | PIC18F8520 |
Configuration des broches de PIC17C766-16I/L
| Broche 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| 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 | RA6/AN6 — PORTA bit 6 / analog input 6 |
| Broche 9 | RA7/AN7 — PORTA bit 7 / analog input 7 |
| Broche 10 | Vss — Ground |
| Broche 11 | OSC1/CLKIN — Oscillator input / external clock input |
| Broche 12 | OSC2/CLKOUT — Oscillator output / clock out |
| Broche 13 | RC0 — PORTC bit 0 |
| Broche 14 | RC1 — PORTC bit 1 |
| Broche 15 | RC2 — PORTC bit 2 |
| Broche 16 | RC3 — PORTC bit 3 |
| Broche 17 | RD0 — PORTD bit 0 |
| Broche 18 | RD1 — PORTD bit 1 |
| Broche 19 | RD2 — PORTD bit 2 |
| Broche 20 | RD3 — PORTD bit 3 |
| Broche 21 | RD4 — PORTD bit 4 |
| Broche 22 | RD5 — PORTD bit 5 |
| Broche 23 | RD6 — PORTD bit 6 |
| Broche 24 | RD7 — PORTD bit 7 |
| Broche 25 | Vss — Ground |
| Broche 26 | Vdd — Positive supply (4.5 V to 5.5 V) |
| Broche 27 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 28 | RB1 — PORTB bit 1 |
| Broche 29 | RB2 — PORTB bit 2 |
| Broche 30 | RB3 — PORTB bit 3 |
| Broche 31 | RB4 — PORTB bit 4 |
| Broche 32 | RB5 — PORTB bit 5 |
| Broche 33 | RB6 — PORTB bit 6 |
| Broche 34 | RB7 — PORTB bit 7 |
| Broche 35 | RC4 — PORTC bit 4 |
| Broche 36 | RC5 — PORTC bit 5 |
| Broche 37 | RC6 — PORTC bit 6 |
| Broche 38 | RC7 — PORTC bit 7 |
| Broche 39 | RE0 — PORTE bit 0 |
| Broche 40 | RE1 — PORTE bit 1 |
| Broche 41 | RE2 — PORTE bit 2 |
| Broche 42 | RE3 — PORTE bit 3 |
| Broche 43 | RE4 — PORTE bit 4 |
| Broche 44 | RE5 — PORTE bit 5 |
| Broche 45 | RE6 — PORTE bit 6 |
| Broche 46 | RE7 — PORTE bit 7 |
| Broche 47 | Vss — Ground |
| Broche 48 | Vdd — Positive supply |
| Broche 49 | RF0 — PORTF bit 0 |
| Broche 50 | RF1 — PORTF bit 1 |
| Broche 51 | RF2 — PORTF bit 2 |
| Broche 52 | RF3 — PORTF bit 3 |
| Broche 53 | RF4 — PORTF bit 4 |
| Broche 54 | RF5 — PORTF bit 5 |
| Broche 55 | RF6 — PORTF bit 6 |
| Broche 56 | RF7 — PORTF bit 7 |
| Broche 57 | RG0 — PORTG bit 0 |
| Broche 58 | RG1 — PORTG bit 1 |
| Broche 59 | RG2 — PORTG bit 2 |
| Broche 60 | RG3 — PORTG bit 3 |
| Broche 61 | RG4 — PORTG bit 4 |
| Broche 62 | RG5 — PORTG bit 5 |
| Broche 63 | RG6 — PORTG bit 6 |
| Broche 64 | RG7 — PORTG bit 7 |
| Broche 65 | AVdd — Analog supply voltage |
| Broche 66 | AVss — Analog ground |
| Broche 67 | RH0 — PORTH bit 0 |
| Broche 68 | RH1 — PORTH bit 1 |
| Broche 69 | RH2 — PORTH bit 2 |
| Broche 70 | RH3 — PORTH bit 3 |
| Broche 71 | RH4 — PORTH bit 4 |
| Broche 72 | RH5 — PORTH bit 5 |
| Broche 73 | RH6 — PORTH bit 6 |
| Broche 74 | RH7 — PORTH bit 7 |
| Broche 75 | Vss — Ground |
| Broche 76 | Vdd — Positive supply |
| Broche 77 | TOCK1 — Timer0 clock input |
| Broche 78 | NC — Not connected (per datasheet) |
| Broche 79 | NC — Not connected (per datasheet) |
| Broche 80 | NC — Not connected (per datasheet) |
| Broche 81 | NC — Not connected (per datasheet) |
| Broche 82 | NC — Not connected (per datasheet) |
| Broche 83 | NC — Not connected (per datasheet) |
| Broche 84 | NC — Not connected (per datasheet) |
Applications typiques
PIC17C766-16I/L convient pour 6 applications: Industrial Motor Control, HVAC and Building Automation, White Goods and Appliance Control, Automotive Body and Chassis Modules, Embedded Instrumentation, Point-of-Sale and Embedded Terminals.
Industrial Motor Control
The PIC17C766-16I/L fits industrial motor-control designs that demand many I/O lines, fast deterministic interrupts, and integrated ADC feedback. With 66 I/O, a 10-bit ADC, hardware PWM/capture modules, and 8.25 MIPS throughput at 16 MHz, it can drive 3-phase inverter commutation, BLDC trapezoidal commutation, or stepper sequencing while sampling current and back-EMF. The 84-pin PLCC also accepts through-hole sockets, easing prototype rework on legacy drives. Note the OTP-only program memory - firmware is committed at production and cannot be field-updated, so use the PIC18F8520 successor if field updates are required.
Recommandé
HVAC and Building Automation
HVAC controllers need deterministic timing, plentiful I/O for sensor arrays and triac drivers, and on-chip ADC for temperature and pressure sensing - all native strengths of the PIC17C766-16I/L. The 32 KB OTP (16K x 16) holds complex thermostat, damper, and VAV control loops, while 66 I/O lines multiplex keypads, displays, relay banks and serial communication. The 84-pin PLCC package simplifies socket-based prototyping during NPI builds. Industrial temperature rating (-40 C to +85 C) suits unconditioned equipment rooms, and the 121 ns interrupt latency keeps control loops stable.
Recommandé
White Goods and Appliance Control
Washing machines, dishwashers, ovens and refrigerators rely on a single MCU managing motor, valve, sensor, and user-interface functions - exactly the workload the PIC17C766-16I/L was designed for. The integrated 10-bit ADC digitizes temperature and water-level sensors, while 66 I/O lines drive triac-controlled heater elements, latching valves, and multiplexed key/display panels. The OTP memory locks firmware at production, preventing tampering and ensuring regulatory consistency. The PLCC-84 socket compatibility simplifies factory programming and field service swaps. Plan for an NRE mask change if any code update is required after launch.
Recommandé
Automotive Body and Chassis Modules
Body controllers for door modules, seat controllers, instrument clusters, and lighting drivers often pair a microcontroller with discrete drivers. The PIC17C766-16I/L's 66 I/O lines, hardware PWM, and 10-bit ADC cover LIN/analog sensing and MOSFET/relay drive in one chip. The 84-pin PLCC package and 5 V supply suit pre-CAN-bus modules still in production for trucks and off-highway vehicles. Note the Industrial (-40 C to +85 C) rather than AEC-Q100 grade; for new automotive designs use dsPIC33 or PIC18F-Q1 parts instead. Useful for service replacements of legacy modules.
Recommandé
Embedded Instrumentation
Bench instruments, data loggers, and process-control front-ends benefit from the PIC17C766-16I/L's 66 I/O for keypad and LCD interfaces, the 10-bit ADC for sensor conditioning, and the 32 KB OTP (16K x 16) for calibration tables and menu state machines. The 8.25 MIPS throughput is enough to drive simple text UIs and serial protocols such as RS-232/RS-485 via the on-chip USART. The 84-pin PLCC package is a legacy-friendly choice for through-hole or socketed repair of installed equipment. For new designs requiring field upgradeability, migrate to PIC18F or dsPIC33EP families.
Recommandé
Point-of-Sale and Embedded Terminals
POS terminals, vending machine controllers, and ticket dispensers need reliable fixed-function control with many I/O for keypads, displays, and serial peripherals. The PIC17C766-16I/L delivers 66 I/O lines, an integrated 10-bit ADC, USART, and 8.25 MIPS throughput to manage keypad scanning, LCD multiplex, currency sensing, and serial audit logs. The 32 KB OTP locks firmware at production to prevent field tampering - a useful property for metered equipment. The PLCC-84 socket footprint simplifies depot-level repair. Pair with external EEPROM for audit-trail storage and add a watchdog supervisor for unattended deployment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C766-16I/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C766-16I/PT | PIC17C766-16E/PT | PIC17C756A-16I/PT | PIC17C762-16I/PT | PIC17C762-16/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-pin PLCC (LCC-84) | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP | 84-pin TQFP |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP |
| RAM | 902 B | 902 B | 902 B | 902 B | 902 B | 902 B |
| Max Clock | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS | 8.25 MIPS |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C |
| 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 | 4.5 V to 5.5 V |
| Lifecycle | NRND | NRND | NRND | EOL | EOL | EOL |
Principaux différenciateurs
- Largest memory in the PIC17C family with 84-pin PLCC and 66 I/O (vs PIC17C762-16I/PT)
- Industrial -40 C to +85 C grade in socket-friendly PLCC package (vs PIC17C766-16I/PT)
- Mature 8-bit PIC17C core with 58 single-word instructions (vs PIC18F8520)
Notes de conception
PIC17C766-16I/L uses OTP EPROM - firmware can only be programmed once, so commit code only after firmware is fully validated. A programming-cycle mistake costs the entire part. Always order engineering samples or use a PIC18F8520 (flash) for firmware development, then port the final image to the PIC17C766 for production.
Power the PIC17C766-16I/L from a regulated 4.5 V to 5.5 V supply with a 100 nF decoupling cap within 5 mm of each Vdd/Vss pair (there are 4 pairs on the 84-pin PLCC). Place a bulk 10 uF tantalum plus 100 nF ceramic on the analog AVdd/AVss pair and route AVss to a clean ground island. Add a watchdog supervisor and a manual reset button tied to MCLR through a 10 kohm pull-up for robust industrial bring-up.
The 84-pin PLCC is a J-lead surface-mount package that also fits standard PLCC sockets - useful for prototype rework and field replacement. Maintain 0.5 mm clearance under the package to allow cleaning; route oscillator traces (OSC1/OSC2) short and guard them with a ground trace to minimize EMI. Avoid routing switching signals near AVdd/AVss, and keep the analog reference pins (Vref+/Vref-) short and bypassed with 100 nF.
OSC1/OSC2 traces should be kept under 10 mm with a ground guard on both sides to avoid radiating clock harmonics into ADC inputs. The 10-bit ADC reaches ~ +/-1 LSB accuracy only if the analog supply is well decoupled and digital traces do not cross analog traces - use a ground moat around the analog pins. The 121 ns instruction cycle allows deterministic ADC sampling, but enable the ADC acquisition delay based on source impedance to avoid conversion errors.
Informations de conformité
RoHS, REACH, lead-free and halogen-free status for PIC17C766-16I/L were not explicitly stated in the distributor data provided. Industrial temperature grade (-40C to +85C) is confirmed but AEC-Q100 automotive qualification is not - for new automotive designs use PIC18F-Q1 or dsPIC33EV-Q1 parts.
