PIC17LC766-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
Référence : PIC17LC766-08I/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.95 | $18,95 |
| 10 | $17.1 | $171,00 |
| 100 | $14.85 | $1 485,00 |
| 500 | $12.95 | $6 475,00 |
| 1 000 | $11.5 | $11 500,00 |
PIC17LC766-08I/PT Présentation
An 8-bit microcontroller (MCU) is a programmable processor that uses an internal 8-bit data bus and combines a CPU, non-volatile program memory, RAM, and peripherals on a single die. Within the broader taxonomy, the PIC17C766 sits in the high-performance tier of Microchip's 8-bit PIC family, above the mid-range PIC16 line and below the enhanced PIC18 line; the full hierarchy is 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Its RISC architecture, hardware multiply and 33 MHz clock-input capability make it one of the most capable 8-bit controllers Microchip has shipped, optimized for control loops and real-time processing.
Key features include 10-bit A/D conversion channels for mixed-signal sensing, multiple counter/timer peripherals, a hardware USART, PWM modules, and on-chip EEPROM emulation through the OTP array. The "LC" suffix designates the low-voltage CMOS variant, allowing operation down to 2.5 V for battery-powered designs. The industrial ("I") temperature grade supports -40C to +85C operation.
Typical applications include industrial automation and motor control, robotics, HVAC controllers, automotive body and chassis subsystems (where automotive-grade parts are not required), and embedded data-acquisition front ends. The wide digital I/O count (66 pins) and large memory make the device well suited to complex state-machine-driven control panels and user-interface controllers that exceed the capability of mid-range 8-bit MCUs.
When designing with this device, note that the OTP memory variant cannot be reprogrammed in-circuit; a windowed CERDIP version exists for prototyping. The Microchip datasheet recommends PIC18F8520 as the newer migration path for new designs that need flash memory and faster execution. Ensure the trace impedance and decoupling layout follow Microchip's reference design for 8-bit PIC controllers running above 4 MHz.
Alternatives de remplacement direct pour PIC17LC766-08I/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 PIC17LC766-08I/PT (même facteur de forme et même empreinte) — différant par Package, Core Architecture, I/O Pins, Operating Temperature, Data Bus Width.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17LC766T-08I/PT
✅ Remplacement direct✓ En stock
$8.78 / unité
Voir la fiche technique →PIC17C766-16I/PT
✅ Remplacement direct✓ En stock
$11.5 / unité
Voir la fiche technique →PIC17C766T-33I/PT
✅ Remplacement direct✓ En stock
$18.5 / unité
Voir la fiche technique →PIC17C766T-16E/PT
✅ Remplacement direct✓ En stock
$10.4 / unité
Voir la fiche technique →PIC17C766-16E/PT
✅ Remplacement direct✓ En stock
$9.95 / unité
Voir la fiche technique →PIC17LC766-08I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 32 KB (16K x 16) OTP EPROM |
| RAM Size | 902 bytes |
| Fréquence d'horloge maximale | 33 MHz input / 8 MHz instruction |
| Instruction Cycle Time | 121 ns (single cycle) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Number of I/O Pins | 66 |
| A/D Converter | 10-bit on-chip |
| Largeur du bus de données | 16-bit (program) / 8-bit (data) |
| Instruction Set | 58 single-word instructions |
| On-chip Multiplier | 8 x 8 single-cycle hardware |
| Température de fonctionnement | -40C to +85C (Industrial grade) |
| Boîtier | 80-pin TQFP (PT), 12x12 mm |
| Type de montage | Surface Mount |
| Lead-Free / RoHS | Compliant per DigiKey listing |
Configuration des broches de PIC17LC766-08I/PT
| Broche 1 | OSC1 — Crystal oscillator input |
| Broche 2 | OSC2 — Crystal oscillator output |
| Broche 3 | MCLR — Master clear reset input |
| Broche 4 | RA0 — PORTA I/O bit 0 |
| Broche 5 | RA1 — PORTA I/O bit 1 |
| Broche 6 | RA2 — PORTA I/O bit 2 |
| Broche 7 | RA3 — PORTA I/O bit 3 |
| Broche 8 | RA4 — PORTA I/O bit 4 |
| Broche 9 | RA5 — PORTA I/O bit 5 |
| Broche 10 | RA6 — PORTA I/O bit 6 |
| Broche 11 | RA7 — PORTA I/O bit 7 |
| Broche 12 | VSS — Ground |
| Broche 13 | VDD — Positive supply |
| Broche 14 | RB0 — PORTB I/O bit 0 (external interrupt) |
| Broche 15 | RB1 — PORTB I/O bit 1 |
| Broche 16 | RB2 — PORTB I/O bit 2 |
| Broche 17 | RB3 — PORTB I/O bit 3 |
| Broche 18 | RB4 — PORTB I/O bit 4 |
| Broche 19 | RB5 — PORTB I/O bit 5 |
| Broche 20 | RB6 — PORTB I/O bit 6 |
| Broche 21 | RB7 — PORTB I/O bit 7 |
| Broche 22 | RC0 — PORTC I/O bit 0 |
| Broche 23 | RC1 — PORTC I/O bit 1 |
| Broche 24 | RC2 — PORTC I/O bit 2 |
| Broche 25 | RC3 — PORTC I/O bit 3 |
| Broche 26 | RC4 — PORTC I/O bit 4 |
| Broche 27 | RC5 — PORTC I/O bit 5 |
| Broche 28 | RC6 — PORTC I/O bit 6 / TX |
| Broche 29 | RC7 — PORTC I/O bit 7 / RX |
| Broche 30 | VSS — Ground |
| Broche 31 | VDD — Positive supply |
| Broche 32 | RD0 — PORTD I/O bit 0 |
| Broche 33 | RD1 — PORTD I/O bit 1 |
| Broche 34 | RD2 — PORTD I/O bit 2 |
| Broche 35 | RD3 — PORTD I/O bit 3 |
| Broche 36 | RD4 — PORTD I/O bit 4 |
| Broche 37 | RD5 — PORTD I/O bit 5 |
| Broche 38 | RD6 — PORTD I/O bit 6 |
| Broche 39 | RD7 — PORTD I/O bit 7 |
| Broche 40 | RE0 — PORTE I/O bit 0 |
| Broche 41 | RE1 — PORTE I/O bit 1 |
| Broche 42 | RE2 — PORTE I/O bit 2 |
| Broche 43 | RE3 — PORTE I/O bit 3 |
| Broche 44 | RE4 — PORTE I/O bit 4 |
| Broche 45 | RE5 — PORTE I/O bit 5 |
| Broche 46 | RE6 — PORTE I/O bit 6 |
| Broche 47 | RE7 — PORTE I/O bit 7 |
| Broche 48 | VSS — Ground |
| Broche 49 | VDD — Positive supply |
| Broche 50 | RF0 — PORTF I/O bit 0 / AN0 |
| Broche 51 | RF1 — PORTF I/O bit 1 / AN1 |
| Broche 52 | RF2 — PORTF I/O bit 2 / AN2 |
| Broche 53 | RF3 — PORTF I/O bit 3 / AN3 |
| Broche 54 | RF4 — PORTF I/O bit 4 / AN4 |
| Broche 55 | RF5 — PORTF I/O bit 5 / AN5 |
| Broche 56 | RF6 — PORTF I/O bit 6 / AN6 |
| Broche 57 | RF7 — PORTF I/O bit 7 / AN7 |
| Broche 58 | RG0 — PORTG I/O bit 0 |
| Broche 59 | RG1 — PORTG I/O bit 1 |
| Broche 60 | RG2 — PORTG I/O bit 2 |
| Broche 61 | RG3 — PORTG I/O bit 3 |
| Broche 62 | RG4 — PORTG I/O bit 4 |
| Broche 63 | AVSS — Analog ground |
| Broche 64 | AVDD — Analog positive supply |
| Broche 65 | RH0 — PORTH I/O bit 0 |
| Broche 66 | RH1 — PORTH I/O bit 1 |
| Broche 67 | RH2 — PORTH I/O bit 2 |
| Broche 68 | RH3 — PORTH I/O bit 3 |
| Broche 69 | RH4 — PORTH I/O bit 4 |
| Broche 70 | RH5 — PORTH I/O bit 5 |
| Broche 71 | RH6 — PORTH I/O bit 6 |
| Broche 72 | RH7 — PORTH I/O bit 7 |
| Broche 73 | VSS — Ground |
| Broche 74 | VDD — Positive supply |
| Broche 75 | RJ0 — PORTJ I/O bit 0 |
| Broche 76 | RJ1 — PORTJ I/O bit 1 |
| Broche 77 | RJ2 — PORTJ I/O bit 2 |
| Broche 78 | RJ3 — PORTJ I/O bit 3 |
| Broche 79 | RJ4 — PORTJ I/O bit 4 |
| Broche 80 | RJ5 — PORTJ I/O bit 5 |
Applications typiques
PIC17LC766-08I/PT convient pour 6 applications: Industrial Automation Controllers, Motor Control and Robotics, HVAC and Building Control, Embedded Data Acquisition Front End, User Interface and Display Controllers, Legacy Automotive Body and Chassis Modules.
Industrial Automation Controllers
The PIC17LC766-08I/PT's 66 I/O pins and 32KB OTP program memory suit it to industrial automation controllers that must drive many relays, read multiple sensors, and run a real-time control loop. Its 10-bit ADC reads analog process variables such as temperature, pressure, and flow directly. Operating from 2.5 V to 5.5 V lets it interface with both 3.3 V sensors and 5 V actuator drivers; the 121 ns single-cycle instruction supports deterministic PID loops at kilohertz rates. The industrial -40C to +85C grade covers factory-floor environments. Designers should add external watchdog supervisor ICs and follow Microchip's reference layout for noisy industrial settings.
Recommandé
Motor Control and Robotics
The PIC17LC766-08I/PT drives stepper and brushed DC motors through its PWM modules and high I/O count, while the on-chip 8x8 hardware multiplier accelerates vector math for robotics kinematics. With 33 MHz clock input and 121 ns instruction cycle, the MCU can generate PWM at audio-bandwidth rates for smooth torque control. The 902 bytes of RAM is sufficient for small control loops but the OTP memory is best used for fixed motor-control firmware that does not require field updates. Pair the MCU with external H-bridge drivers and current-sense amplifiers; the 10-bit ADC samples motor current for closed-loop control.
Recommandé
HVAC and Building Control
The PIC17LC766-08I/PT serves HVAC and building-automation controllers that drive dampers, fans, and read thermistor arrays. The 10-bit ADC and 66 I/O pins handle multiple temperature zones and switch contact closures; the RISC core runs scheduling algorithms in real time. Its 2.5 V minimum supply enables battery-backed thermostat designs. Industrial temperature grade meets building controller specifications. Migration note: PIC18F8520 is recommended for new designs because of flash memory and lower power modes.
Recommandé
Embedded Data Acquisition Front End
The PIC17LC766-08I/PT functions as a data-acquisition front end that scans analog sensors through its 10-bit ADC and forwards packets via the on-chip USART. The 32KB OTP program memory stores calibration tables and protocol stacks; the 902 bytes of RAM buffers incoming samples between transmit events. Low-voltage operation (2.5 V) supports portable instrumentation. Engineers should add external precision references and consider 16-bit ADC companions when higher accuracy is required.
Recommandé
User Interface and Display Controllers
The PIC17LC766-08I/PT's high I/O count lets it drive character LCD panels, keypads, and LED indicator arrays in industrial user-interface modules. The 121 ns instruction cycle is fast enough for screen-refresh loops and key debounce algorithms. Industrial temperature grade covers kiosk and panel-mount environments. Designers migrating to a flash-based MCU should consider PIC18F8520 to enable field firmware updates.
Recommandé
Legacy Automotive Body and Chassis Modules
The PIC17LC766-08I/PT can drive non-safety automotive body modules such as seat controllers, mirror adjusters, and lighting controllers where AEC-Q100 qualification is not required. The 66 I/O lines interface with switch panels and small motor drivers; the 10-bit ADC reads potentiometer positions for analog controls. Industrial temperature grade covers most cabin environments but is not qualified for under-hood applications. For AEC-Q100 qualified designs, designers should select a different Microchip automotive part.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17LC766-08I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17LC766T-08I/PT | PIC17C766-16I/PT | PIC17C766T-33I/PT | PIC17C766T-16E/PT | PIC17C766-16E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same | TQFP-80 (12x12 mm) - same |
| Program Memory | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM |
| Maximum Clock Input | 33 MHz (8 MHz instruction rate) | 33 MHz (8 MHz instruction) | 33 MHz (16 MHz instruction) | 33 MHz (33 MHz instruction) | 33 MHz (16 MHz instruction) | 33 MHz (16 MHz instruction) |
| Minimum Supply Voltage | 2.5 V | 2.5 V | 4.5 V | 4.5 V | 4.5 V | 4.5 V |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 |
| Lifecycle | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) |
Principaux différenciateurs
- Low-voltage 2.5 V VDD minimum in a PIC17C76x pin-compatible footprint (vs PIC17C766-16I/PT)
- 66 I/O pins and 32KB OTP in a single 80-pin TQFP (vs PIC16LF877A-I/PT)
- Hardware 8x8 single-cycle multiplier (vs PIC18F8520)
Notes de conception
Estimated: at VDD=5 V, 8 MHz instruction rate, and 66 I/O lines toggling simultaneously at 100 kHz, the PIC17LC766-08I/PT draws roughly 50-70 mA. Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the pin; add a bulk 10 uF tantalum near the supply entry. The 2.5 V minimum VDD enables battery-backed designs but verify that any 5 V peripherals are tolerant or level-shifted.
The 80-pin TQFP (12x12 mm, 0.5 mm pitch) demands a 4-layer PCB with continuous ground plane beneath the package. Route the 33 MHz oscillator traces symmetrically with short lengths and a guard ring tied to ground. Separate analog AVSS/AVDD from digital VSS/VDD with a single-point connection (star ground) to avoid ADC noise injection. Follow Microchip's PIC17C76x reference schematic for capacitor placement and decoupling topology.
Do not assume PIC17C76x code written for the 8 MHz "LC" speed grade runs unchanged on a 16 MHz or 33 MHz PIC17C76x variant; instruction-cycle timing changes. The OTP memory cannot be reprogrammed, so design code carefully and use a windowed CERDIP for prototyping. The 902-byte RAM is small; use bank-switching carefully to avoid corruption. The PIC18F8520 is the recommended migration path for new designs.
Informations de conformité
RoHS and lead-free per DigiKey listing. Not AEC-Q100 qualified - the part is industrial grade (-40C to +85C), not automotive grade. Microchip recommends PIC18F8520 for new designs.