PIC17LC766-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
N.º da peça: PIC17LC766-08I/PT ✗ Fim de vida| Qtd. | Preço unitário | 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 Visão geral
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.
Alternativas drop-in para PIC17LC766-08I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC17LC766-08I/PT (mesmo formato e footprint) — diferindo em Package, Core Architecture, I/O Pins, Operating Temperature, Data Bus Width.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC17LC766T-08I/PT
✅ Drop-In✓ Em estoque
$8.78 / unidade
Ver ficha técnica →PIC17C766-16I/PT
✅ Drop-In✓ Em estoque
$11.5 / unidade
Ver ficha técnica →PIC17C766T-33I/PT
✅ Drop-In✓ Em estoque
$18.5 / unidade
Ver ficha técnica →PIC17C766T-16E/PT
✅ Drop-In✓ Em estoque
$10.4 / unidade
Ver ficha técnica →PIC17C766-16E/PT
✅ Drop-In✓ Em estoque
$9.95 / unidade
Ver ficha técnica →PIC17LC766-08I/PT Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC |
| Program Memory Size | 32 KB (16K x 16) OTP EPROM |
| RAM Size | 902 bytes |
| Frequência máxima de clock | 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 |
| Largura do barramento de dados | 16-bit (program) / 8-bit (data) |
| Instruction Set | 58 single-word instructions |
| On-chip Multiplier | 8 x 8 single-cycle hardware |
| Temperatura de operação | -40C to +85C (Industrial grade) |
| Encapsulamento | 80-pin TQFP (PT), 12x12 mm |
| Tipo de montagem | Surface Mount |
| Lead-Free / RoHS | Compliant per DigiKey listing |
Configuração de pinos do PIC17LC766-08I/PT
| Pino 1 | OSC1 — Crystal oscillator input |
| Pino 2 | OSC2 — Crystal oscillator output |
| Pino 3 | MCLR — Master clear reset input |
| Pino 4 | RA0 — PORTA I/O bit 0 |
| Pino 5 | RA1 — PORTA I/O bit 1 |
| Pino 6 | RA2 — PORTA I/O bit 2 |
| Pino 7 | RA3 — PORTA I/O bit 3 |
| Pino 8 | RA4 — PORTA I/O bit 4 |
| Pino 9 | RA5 — PORTA I/O bit 5 |
| Pino 10 | RA6 — PORTA I/O bit 6 |
| Pino 11 | RA7 — PORTA I/O bit 7 |
| Pino 12 | VSS — Ground |
| Pino 13 | VDD — Positive supply |
| Pino 14 | RB0 — PORTB I/O bit 0 (external interrupt) |
| Pino 15 | RB1 — PORTB I/O bit 1 |
| Pino 16 | RB2 — PORTB I/O bit 2 |
| Pino 17 | RB3 — PORTB I/O bit 3 |
| Pino 18 | RB4 — PORTB I/O bit 4 |
| Pino 19 | RB5 — PORTB I/O bit 5 |
| Pino 20 | RB6 — PORTB I/O bit 6 |
| Pino 21 | RB7 — PORTB I/O bit 7 |
| Pino 22 | RC0 — PORTC I/O bit 0 |
| Pino 23 | RC1 — PORTC I/O bit 1 |
| Pino 24 | RC2 — PORTC I/O bit 2 |
| Pino 25 | RC3 — PORTC I/O bit 3 |
| Pino 26 | RC4 — PORTC I/O bit 4 |
| Pino 27 | RC5 — PORTC I/O bit 5 |
| Pino 28 | RC6 — PORTC I/O bit 6 / TX |
| Pino 29 | RC7 — PORTC I/O bit 7 / RX |
| Pino 30 | VSS — Ground |
| Pino 31 | VDD — Positive supply |
| Pino 32 | RD0 — PORTD I/O bit 0 |
| Pino 33 | RD1 — PORTD I/O bit 1 |
| Pino 34 | RD2 — PORTD I/O bit 2 |
| Pino 35 | RD3 — PORTD I/O bit 3 |
| Pino 36 | RD4 — PORTD I/O bit 4 |
| Pino 37 | RD5 — PORTD I/O bit 5 |
| Pino 38 | RD6 — PORTD I/O bit 6 |
| Pino 39 | RD7 — PORTD I/O bit 7 |
| Pino 40 | RE0 — PORTE I/O bit 0 |
| Pino 41 | RE1 — PORTE I/O bit 1 |
| Pino 42 | RE2 — PORTE I/O bit 2 |
| Pino 43 | RE3 — PORTE I/O bit 3 |
| Pino 44 | RE4 — PORTE I/O bit 4 |
| Pino 45 | RE5 — PORTE I/O bit 5 |
| Pino 46 | RE6 — PORTE I/O bit 6 |
| Pino 47 | RE7 — PORTE I/O bit 7 |
| Pino 48 | VSS — Ground |
| Pino 49 | VDD — Positive supply |
| Pino 50 | RF0 — PORTF I/O bit 0 / AN0 |
| Pino 51 | RF1 — PORTF I/O bit 1 / AN1 |
| Pino 52 | RF2 — PORTF I/O bit 2 / AN2 |
| Pino 53 | RF3 — PORTF I/O bit 3 / AN3 |
| Pino 54 | RF4 — PORTF I/O bit 4 / AN4 |
| Pino 55 | RF5 — PORTF I/O bit 5 / AN5 |
| Pino 56 | RF6 — PORTF I/O bit 6 / AN6 |
| Pino 57 | RF7 — PORTF I/O bit 7 / AN7 |
| Pino 58 | RG0 — PORTG I/O bit 0 |
| Pino 59 | RG1 — PORTG I/O bit 1 |
| Pino 60 | RG2 — PORTG I/O bit 2 |
| Pino 61 | RG3 — PORTG I/O bit 3 |
| Pino 62 | RG4 — PORTG I/O bit 4 |
| Pino 63 | AVSS — Analog ground |
| Pino 64 | AVDD — Analog positive supply |
| Pino 65 | RH0 — PORTH I/O bit 0 |
| Pino 66 | RH1 — PORTH I/O bit 1 |
| Pino 67 | RH2 — PORTH I/O bit 2 |
| Pino 68 | RH3 — PORTH I/O bit 3 |
| Pino 69 | RH4 — PORTH I/O bit 4 |
| Pino 70 | RH5 — PORTH I/O bit 5 |
| Pino 71 | RH6 — PORTH I/O bit 6 |
| Pino 72 | RH7 — PORTH I/O bit 7 |
| Pino 73 | VSS — Ground |
| Pino 74 | VDD — Positive supply |
| Pino 75 | RJ0 — PORTJ I/O bit 0 |
| Pino 76 | RJ1 — PORTJ I/O bit 1 |
| Pino 77 | RJ2 — PORTJ I/O bit 2 |
| Pino 78 | RJ3 — PORTJ I/O bit 3 |
| Pino 79 | RJ4 — PORTJ I/O bit 4 |
| Pino 80 | RJ5 — PORTJ I/O bit 5 |
Aplicações típicas
PIC17LC766-08I/PT é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17LC766-08I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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) |
Principais diferenciais
- 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)
Notas de projeto
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.
Informações de conformidade
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.