PIC17LC766-08I/L - 8-Bit 8MHz 32KB OTP MCU | Microchip | 84-PLCC
N.º da peça: PIC17LC766-08I/L ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $17.5 | $17,50 |
| 10 | $15.75 | $157,50 |
| 100 | $13.95 | $1.395,00 |
| 500 | $12.1 | $6.050,00 |
| 1.000 | $10.85 | $10.850,00 |
PIC17LC766-08I/L Visão geral
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data bus, combining CPU, RAM, non-volatile program memory, and peripherals on a single die. PIC17C-series parts sit at the top of Microchip's 8-bit hierarchy (PIC10/12/16/17/18), pairing a RISC instruction set with a 16-bit-wide program word to maximize code density and execution speed.
Key features of the PIC17LC766 include a built-in 10-bit A/D converter, a single-cycle 8x8 hardware multiplier, two-cycle branch and table-read/write operations, an industrial operating temperature range (-40C to +85C), and an LC (low-power CMOS) core designed for 2.5V to 5.5V operation. The 'L' suffix denotes the 84-pin PLCC J-lead surface-mount package, and 'I' marks the industrial temperature grade.
The architecture combines a Harvard bus (separate program and data paths) with a 16-bit instruction word and 58 single-word instructions, simplifying code development while delivering predictable real-time performance. The 8x8 hardware multiplier and 16-level hardware stack accelerate math-intensive and interrupt-driven control loops.
Typical applications include industrial control systems, motor control front-ends, instrumentation with on-chip A/D, embedded data acquisition, and legacy equipment retrofits. Designers select the PIC17LC766 when 8-bit simplicity, OTP memory, and high I/O count are required.
When designing in this MCU, note that OTP memory cannot be re-programmed in-circuit; use the JW (windowed) or QFP variants for prototyping. The 84-pin PLCC requires a socket or reflow profile suited to J-leaded SMT packages.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing PIC17LC766-08I/L.
Alternativas drop-in para PIC17LC766-08I/L — 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/L (mesmo formato e footprint) — diferindo em Package, Core Architecture, Data Bus Width, I/O Pins, ADC.
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 →PIC17LC756A-08I/L
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC17LC752T-08I/L
✅ Drop-In✓ Em estoque
$4.35 / unidade
Ver ficha técnica →PIC17C766-16I/PT
✅ Drop-In✓ Em estoque
$11.5 / unidade
Ver ficha técnica →PIC17C762-16I/PT
✅ Drop-In✓ Em estoque
$10.05 / unidade
Ver ficha técnica →PIC17LC756AT-08I/L
✅ Drop-In✓ Em estoque
$10.95 / unidade
Ver ficha técnica →PIC17LC766-08I/L Classificações máximas e características elétricas
| Product Family | PIC17C |
| Core | 8-bit RISC (Harvard) |
| Largura do barramento de dados | 8-bit |
| Instruction Word Width | 16-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Maximum Clock Input | 33 MHz |
| Instruction Cycle Time | 121 ns (single-cycle) |
| ADC | 10-bit on-chip |
| I/O Pins | 66 |
| Number of Instructions | 58 single-word |
| Hardware Multiplier | 8 x 8 single-cycle |
| Tensão de alimentação | 2.5 V to 5.5 V (3.3 V / 5 V typical) |
| Temperatura de operação | -40 C to +85 C (industrial) |
| Encapsulamento | 84-pin PLCC (J-lead, 29.31 x 29.31 mm) |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do PIC17LC766-08I/L
| Pino 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Pino 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pino 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pino 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Pino 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Pino 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Pino 7 | RA6/AN6 — Port A bit 6 / Analog input 6 |
| Pino 8 | RA7/AN7 — Port A bit 7 / Analog input 7 |
| Pino 9 | RB0/INT — Port B bit 0 / External interrupt |
| Pino 10 | RB1 — Port B bit 1 |
| Pino 11 | RB2 — Port B bit 2 |
| Pino 12 | RB3 — Port B bit 3 |
| Pino 13 | RB4 — Port B bit 4 |
| Pino 14 | RB5 — Port B bit 5 |
| Pino 15 | RB6 — Port B bit 6 |
| Pino 16 | RB7 — Port B bit 7 |
| Pino 17 | RC0 — Port C bit 0 |
| Pino 18 | RC1 — Port C bit 1 |
| Pino 19 | RC2 — Port C bit 2 |
| Pino 20 | RC3 — Port C bit 3 |
| Pino 21 | RC4 — Port C bit 4 |
| Pino 22 | RC5 — Port C bit 5 |
| Pino 23 | RC6 — Port C bit 6 |
| Pino 24 | RC7 — Port C bit 7 |
| Pino 25 | RD0 — Port D bit 0 |
| Pino 26 | RD1 — Port D bit 1 |
| Pino 27 | RD2 — Port D bit 2 |
| Pino 28 | RD3 — Port D bit 3 |
| Pino 29 | RD4 — Port D bit 4 |
| Pino 30 | RD5 — Port D bit 5 |
| Pino 31 | RD6 — Port D bit 6 |
| Pino 32 | RD7 — Port D bit 7 |
| Pino 33 | RE0 — Port E bit 0 |
| Pino 34 | RE1 — Port E bit 1 |
| Pino 35 | RE2 — Port E bit 2 |
| Pino 36 | RE3 — Port E bit 3 |
| Pino 37 | RE4 — Port E bit 4 |
| Pino 38 | RE5 — Port E bit 5 |
| Pino 39 | RE6 — Port E bit 6 |
| Pino 40 | RE7 — Port E bit 7 |
| Pino 41 | RF0 — Port F bit 0 |
| Pino 42 | RF1 — Port F bit 1 |
| Pino 43 | RF2 — Port F bit 2 |
| Pino 44 | RF3 — Port F bit 3 |
| Pino 45 | RF4 — Port F bit 4 |
| Pino 46 | RF5 — Port F bit 5 |
| Pino 47 | RF6 — Port F bit 6 |
| Pino 48 | RF7 — Port F bit 7 |
| Pino 49 | RG0 — Port G bit 0 |
| Pino 50 | RG1 — Port G bit 1 |
| Pino 51 | RG2 — Port G bit 2 |
| Pino 52 | RG3 — Port G bit 3 |
| Pino 53 | RG4 — Port G bit 4 |
| Pino 54 | OSC1 — Oscillator input |
| Pino 55 | OSC2 — Oscillator output |
| Pino 56 | NC — Not connected (per datasheet) |
| Pino 57 | NC — Not connected (per datasheet) |
| Pino 58 | MCLR — Master clear reset (active low) |
| Pino 59 | VSS — Ground reference |
| Pino 60 | VDD — Positive supply voltage |
| Pino 61 | VSS — Ground reference |
| Pino 62 | VDD — Positive supply voltage |
| Pino 63 | T0CKI — Timer 0 clock input |
| Pino 64 | T1CKI — Timer 1 clock input |
| Pino 65 | CCP1 — Capture/Compare/PWM 1 |
| Pino 66 | CCP2 — Capture/Compare/PWM 2 |
| Pino 67 | TX/CK — USART transmit / clock |
| Pino 68 | RX/DT — USART receive / data |
| Pino 69 | SS — SPI slave select |
| Pino 70 | SDO — SPI serial data out |
| Pino 71 | SDI — SPI serial data in |
| Pino 72 | SCK — SPI serial clock |
| Pino 73 | SCL — I2C clock (peripheral mode) |
| Pino 74 | SDA — I2C data (peripheral mode) |
| Pino 75 | NC — Not connected (per datasheet) |
| Pino 76 | NC — Not connected (per datasheet) |
| Pino 77 | NC — Not connected (per datasheet) |
| Pino 78 | NC — Not connected (per datasheet) |
| Pino 79 | NC — Not connected (per datasheet) |
| Pino 80 | NC — Not connected (per datasheet) |
| Pino 81 | NC — Not connected (per datasheet) |
| Pino 82 | NC — Not connected (per datasheet) |
| Pino 83 | NC — Not connected (per datasheet) |
| Pino 84 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC17LC766-08I/L é adequado para 6 aplicaçãos: Industrial Control Systems, Motor Control Front-Ends, Data Acquisition and Instrumentation, Legacy Equipment Retrofit, Embedded Sensor Hubs, Automotive Body Electronics (Non-Safety).
Industrial Control Systems
The PIC17LC766-08I/L fits industrial control boards because its 66 digital I/O lines drive relays, solenoid drivers, optocouplers, and indicator LEDs from a single chip, while the on-chip 10-bit ADC reads 4-20 mA loop, thermistor, or potentiometer feedback. Operating from 2.5 V to 5.5 V, the LC core tolerates supply sag common in 24 V industrial buses stepped down to 5 V, and the industrial -40 C to +85 C grade survives factory-floor thermal stress. The 32 KB OTP memory holds ladder-logic or state-machine code for PLCs, motor starters, and process controllers; the 902-byte RAM buffers scan tables without external expansion. Estimated code size for typical PID control loops fits under 16 KB, leaving headroom for diagnostics.
Recomendado
Motor Control Front-Ends
The PIC17LC766-08I/L serves as the control front-end for stepper and DC brush motors because its 8x8 single-cycle hardware multiplier accelerates PI loop math and its 66 I/O pins support multiple PWM, quadrature encoder, and limit-switch inputs simultaneously. The 121 ns instruction cycle provides deterministic loop timing critical for field-oriented control, while OTP memory ensures firmware integrity in vibration-prone mounting. The LC variant's 2.5 V to 5.5 V supply range allows direct operation from a regulated 3.3 V bus, reducing thermal load in enclosed motor housings. Estimated: at 8 MIPS, a 1 kHz control loop consumes approximately 12 percent of CPU bandwidth, leaving cycles for housekeeping.
Recomendado
Data Acquisition and Instrumentation
The PIC17LC766-08I/L is a fit for bench-top and panel-mount instrumentation because the on-chip 10-bit ADC digitizes multiple analog channels without external converter hardware, reducing BOM cost and PCB area. The 32 KB OTP memory stores calibration tables, linearization routines, and front-panel menu logic for digital multimeters, weigh scales, and process indicators. The Harvard bus architecture ensures deterministic ADC-to-display response time, important for reading stability. The LC core's low-voltage operation extends battery life in portable calibrators; the 902-byte RAM buffers sample bursts up to 4 kS/s before forwarding via UART. Estimated: storing 256 samples of 10-bit ADC data occupies 512 bytes of the 902-byte RAM budget.
Recomendado
Legacy Equipment Retrofit
The PIC17LC766-08I/L is used to modernize installed equipment because the 84-pin PLCC package matches the footprint of legacy PIC17C766 sockets, allowing drop-in upgrade without board rework. Designers can port existing PIC17 assembly code directly to the LC variant for lower power operation while preserving peripheral behavior. The OTP memory retains firmware without battery backup, suitable for retrofitting HVAC controllers, elevator panels, and industrial printers. Estimated: a typical PIC17C766 socket conversion requires only firmware recompilation; no schematic or PCB changes are needed when the LC grade replaces the standard C grade in 5 V systems.
Recomendado
Embedded Sensor Hubs
The PIC17LC766-08I/L serves embedded sensor hubs because its 66 I/O lines multiplex multiple SPI, I2C, and UART sensor channels to a host processor, while the on-chip 10-bit ADC adds local analog sampling for redundancy. The 32 KB OTP memory holds sensor-fusion and self-test code, and the 8 MIPS throughput sustains 100 Hz update rates for IMU, pressure, and flow sensor arrays. The LC variant operates from 2.5 V, making it compatible with single-cell Li-ion powered sensor nodes. Estimated: at 100 Hz update rate with 4 sensor reads per cycle, CPU utilization remains below 30 percent, leaving headroom for diagnostics and communications.
Recomendado
Automotive Body Electronics (Non-Safety)
The PIC17LC766-08I/L fits automotive body-electronics modules (window controllers, seat adjusters, mirror positioners) because its 66 I/O lines drive multiple brushed-DC loads directly through MOSFET drivers, while the 10-bit ADC reads current-sense feedback. The industrial -40 C to +85 C temperature range covers cabin and underhood-adjacent environments. The OTP memory ensures firmware cannot be erased by voltage transients on the 12 V battery bus (post-regulation). Estimated: at VIN = 5 V regulated, I/O pin current of 25 mA per pin supports direct LED indicator drive without buffer transistors on standard lighting nodes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC17LC766-08I/L — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC17LC766T-08I/PT | PIC17LC756A-08I/L | PIC17LC752T-08I/L | PIC17C766-16I/PT | PIC17C762-16I/PT | PIC17LC756AT-08I/L |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 84-pin PLCC (J-lead) | 84-pin PLCC | 84-pin PLCC (J-lead) | 84-pin PLCC (J-lead) | 84-pin PLCC | 84-pin PLCC | 84-pin PLCC (J-lead) |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP (-50%) | 32 KB OTP | 16 KB OTP (-50%) | 32 KB OTP |
| RAM Size | 902 bytes | 902 bytes | 902 bytes | 454 bytes (-50%) | 902 bytes | 454 bytes (-50%) | 902 bytes |
| Maximum Clock Input | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 33 MHz |
| Instruction Cycle | 121 ns (8 MIPS) | 121 ns (8 MIPS) | 121 ns (8 MIPS) | 121 ns (8 MIPS) | 121 ns (8 MIPS @ 16 grade) | 121 ns (8 MIPS @ 16 grade) | 121 ns (8 MIPS) |
| Supply Voltage | 2.5 V to 5.5 V (LC) | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 4.5 V to 5.5 V (standard C) | 4.5 V to 5.5 V (standard C) | 2.5 V to 5.5 V |
| I/O Pins | 66 | 66 | 66 | 66 | 66 | 66 | 66 |
| On-Chip ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
Principais diferenciais
- Largest OTP program memory in the PIC17 84-pin PLCC family (vs PIC17LC752T-08I/L)
- Low-voltage LC core for portable and battery-backed designs (vs PIC17C766-16I/PT)
- Full 66 I/O count with 10-bit ADC and 8x8 hardware multiplier (vs PIC17C762-16I/PT)
Notas de projeto
The PIC17LC766-08I/L requires a decoupling capacitor within 5 mm of each VDD/VSS pair. Use a 100 nF X7R ceramic in parallel with a 10 uF tantalum or low-ESR electrolytic bulk capacitor on the main 5 V rail. The LC core draws higher transient current during table-read and table-write operations (two-cycle instructions) because the 16-bit program word is fetched in a single bus cycle - inadequate bulk capacitance causes VDD droop that resets the part on heavy flash activity.
Place the 33 MHz crystal or resonator within 10 mm of the OSC1 and OSC2 pins and guard the traces with a ground pour. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for in-circuit programming; route the MCLR trace away from high-frequency switching nodes to avoid spurious resets during PWM transitions. The 84-pin PLCC J-lead footprint requires careful reflow profile control - peak temperature should not exceed 245 C to prevent J-lead lifting.
OTP memory cannot be re-programmed in-circuit; design the firmware image carefully before committing to a production lot and use the JW (windowed) ceramic variant for development. The 'LC' process variant operates down to 2.5 V but the brown-out reset (BOR) and ADC reference accuracy are derated below 3.0 V - if precision analog readings are required, supply at least 3.3 V regulated. Programming voltage on MCLR must reach 13 V for OTP write; confirm the production programmer supports the PIC17C76x family before scheduling the assembly run.
Informações de conformidade
RoHS and REACH compliance per Microchip product declaration. The PIC17LC766-08I/L is not AEC-Q100 qualified; for automotive applications consult Microchip's PIC18F automotive portfolio.
