PIC17LC756AT-08I/L - 8-bit OTP MCU, 32KB, 8MHz, 68-PLCC | Microchip
MPN: PIC17LC756AT-08I/L ✓ Hoạt độngPIC17LC756AT-08I/L Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one device. The PIC17 family sits at the high end of Microchip's 8-bit portfolio, targeting applications that require more memory, I/O, and processing bandwidth than the mid-range PIC16 series can deliver, while remaining considerably simpler than 16-bit dsPIC or 32-bit ARM Cortex-M parts. The LC suffix designates a low-voltage CMOS variant supporting operation from 2.5 V to 5.5 V, broadening its usefulness in mixed-voltage and battery-tolerant designs.
Key features include a 12-channel, 10-bit Analog-to-Digital Converter (ADC) for sensor acquisition, three serial communication peripherals (I2C, SPI, and UART/USART), 50 digital I/O lines, and an industrial-grade operating temperature range of -40 °C to +85 °C. The wide supply voltage window (2.5 V to 5.5 V) and the OTP-based program memory make the PIC17LC756AT-08I/L appropriate for moderate-volume embedded products that benefit from a flexible, reprogrammable development cycle followed by a locked production code.
Architecturally the device combines an enhanced PIC17 RISC core with Harvard-style separate program and data buses, a high-current drive capability on selected I/O pins, and capture/compare/PWM (CCP) peripherals suitable for motor and timer control. The 32KB OTP program memory is organized as 16K x 16 words to match the 16-bit-wide instruction fetch path, while the 902-byte RAM is byte-addressable for efficient C-compiler code generation.
Typical applications include industrial automation controllers, consumer-electronics user-interface panels, motor-control subsystems, sensor hubs with on-board ADC, and legacy embedded designs that are still in production and require a long-life-cycle, RoHS-compliant 8-bit MCU with a known instruction set. Designers familiar with PIC12/PIC16/PIC17 assembly or the MPLAB C17 toolchain can port code with minimal effort.
When designing with this part, note that OTP memory can be programmed only once - prototypes should be built with windowed (JW) or UV-erasable variants first, then transitioned to the PIC17LC756AT-08I/L for production. Ensure that the 68-PLCC socket or footprint is laid out with adequate clearance for tooling and consider the device's industrial temperature rating for outdoor or factory environments.
This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, lists drop-in replacement MPNs from the same PIC17 family, and combines practical design notes not all gathered in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC17LC756AT-08I/L — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC17LC756AT-08I/L (cùng hình factor và footprint) — khác nhau ở Package, Data Bus Width, ADC, Instruction Cycle Time, I/O Pins.
PIC17C756AT-33I/L
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Xem tài liệu →PIC17LC756A-08I/L
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PIC17LC756AT-08/L
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Xem tài liệu →PIC17LC756AT-08I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17LC752T-08I/L
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Xem tài liệu →PIC17LC756AT-08I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC17 RISC |
| Family | PIC® 17C |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| Tần số xung maksimum | 8 MHz |
| Instruction Cycle Time | 121 ns (single cycle, 8 MHz) |
| Bề rộng đường dữ liệu | 16-bit (instruction fetch) / 8-bit (data) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 50 (33 I/O ports per datasheet; verify in datasheet for full 50-pin count) |
| ADC | 12-channel, 10-bit |
| Communication Peripherals | I2C, SPI, UART/USART |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial, "I") |
| Hộp | 68-PLCC (24.23 x 24.23 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC17LC756AT-08I/L
| Chân 1 | PWM1 — PWM output channel 1 |
| Chân 2 | PWM2 — PWM output channel 2 |
| Chân 3 | PWM3 — PWM output channel 3 |
| Chân 4 | PWM4 — PWM output channel 4 |
| Chân 5 | RA0/AN0 — PORTA bit 0 / ADC input channel 0 |
| Chân 6 | RA1/AN1 — PORTA bit 1 / ADC input channel 1 |
| Chân 7 | RA2/AN2 — PORTA bit 2 / ADC input channel 2 |
| Chân 8 | RA3/AN3 — PORTA bit 3 / ADC input channel 3 |
| Chân 9 | RA4/AN4 — PORTA bit 4 / ADC input channel 4 |
| Chân 10 | RA5/AN5 — PORTA bit 5 / ADC input channel 5 |
| Chân 11 | VSS — Ground reference |
| Chân 12 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Chân 13 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Chân 14 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 15 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 16 | RB1 — PORTB bit 1 |
| Chân 17 | RB2 — PORTB bit 2 |
| Chân 18 | RB3 — PORTB bit 3 |
| Chân 19 | RB4 — PORTB bit 4 |
| Chân 20 | RB5 — PORTB bit 5 |
| Chân 21 | RB6 — PORTB bit 6 |
| Chân 22 | RB7 — PORTB bit 7 |
| Chân 23 | VSS — Ground reference |
| Chân 24 | VDD — Positive supply voltage |
| Chân 25 | RC0 — PORTC bit 0 |
| Chân 26 | RC1 — PORTC bit 1 |
| Chân 27 | RC2 — PORTC bit 2 |
| Chân 28 | RC3 — PORTC bit 3 |
| Chân 29 | RC4 — PORTC bit 4 |
| Chân 30 | RC5 — PORTC bit 5 |
| Chân 31 | RC6 — PORTC bit 6 |
| Chân 32 | RC7 — PORTC bit 7 |
| Chân 33 | VSS — Ground reference |
| Chân 34 | VDD — Positive supply voltage |
| Chân 35 | RD0 — PORTD bit 0 |
| Chân 36 | RD1 — PORTD bit 1 |
| Chân 37 | RD2 — PORTD bit 2 |
| Chân 38 | RD3 — PORTD bit 3 |
| Chân 39 | RD4 — PORTD bit 4 |
| Chân 40 | RD5 — PORTD bit 5 |
| Chân 41 | RD6 — PORTD bit 6 |
| Chân 42 | RD7 — PORTD bit 7 |
| Chân 43 | VSS — Ground reference |
| Chân 44 | VDD — Positive supply voltage |
| Chân 45 | RE0/AN6 — PORTE bit 0 / ADC input channel 6 |
| Chân 46 | RE1/AN7 — PORTE bit 1 / ADC input channel 7 |
| Chân 47 | RE2/AN8 — PORTE bit 2 / ADC input channel 8 |
| Chân 48 | RE3/AN9 — PORTE bit 3 / ADC input channel 9 |
| Chân 49 | RE4/AN10 — PORTE bit 4 / ADC input channel 10 |
| Chân 50 | RE5/AN11 — PORTE bit 5 / ADC input channel 11 |
| Chân 51 | PWM5 — PWM output channel 5 |
| Chân 52 | PWM6 — PWM output channel 6 |
| Chân 53 | PWM7 — PWM output channel 7 |
| Chân 54 | PWM8 — PWM output channel 8 |
| Chân 55 | RX/DT — UART receive / data line |
| Chân 56 | TX/CK — UART transmit / clock line |
| Chân 57 | SCL — I2C clock line |
| Chân 58 | SDA — I2C data line |
| Chân 59 | SCK — SPI clock line |
| Chân 60 | SDI — SPI data input |
| Chân 61 | SDO — SPI data output |
| Chân 62 | SS — SPI slave select |
| Chân 63 | CCP1 — Capture/Compare/PWM channel 1 |
| Chân 64 | CCP2 — Capture/Compare/PWM channel 2 |
| Chân 65 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 66 | T0CKI — Timer 0 clock input |
| Chân 67 | VSS — Ground reference |
| Chân 68 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC17LC756AT-08I/L phù hợp cho 6 Áp dụngs: Industrial Automation Controller, Consumer Electronics User Interface Panel, Sensor Hub with On-Board ADC, Motor Control Subsystem, Medical Monitoring Device (Non-Critical), Legacy Embedded System Maintenance.
Industrial Automation Controller
The PIC17LC756AT-08I/L fits industrial automation controllers thanks to its 8 MHz PIC17 RISC core, 32 KB OTP program memory, and 902-byte RAM, which together support PID loops, multi-axis sequencing, and Modbus-style protocol stacks within a single chip. The 50 digital I/O pins and integrated 12-channel 10-bit ADC allow direct connection to limit switches, thermocouples via front-end amplifiers, and 4-20 mA loop sensors without external glue logic. The -40 °C to +85 °C industrial temperature rating and 2.5 V to 5.5 V supply range let the part operate from 24 V-to-5 V industrial backplanes as well as battery-backed control panels. UART, SPI, and I2C peripherals enable fieldbus expansion via transceiver ICs.
Được đề xuất
Consumer Electronics User Interface Panel
The PIC17LC756AT-08I/L drives consumer-electronics user-interface panels such as appliance controllers, HVAC thermostats, and audio-system front panels by combining generous program memory (32 KB) with abundant I/O for keypads, displays, and rotary encoders. The 3.3 V-or-5 V supply flexibility allows direct interface with character LCDs and OLED modules that prefer 3.3 V rails, while the ADC handles resistive-touch or potentiometer inputs. The PIC17 instruction set and MPLAB toolchain shorten development cycles for cost-sensitive consumer products that must ship across multiple SKUs sharing a common firmware base. Surface-mount 68-PLCC packaging supports automated PCB assembly on high-volume consumer lines.
Được đề xuất
Sensor Hub with On-Board ADC
The PIC17LC756AT-08I/L serves as a multi-sensor data-acquisition hub because of its 12-channel 10-bit ADC, 50 I/O lines, and 902-byte RAM for buffering samples before forwarding to a host via UART, SPI, or I2C. Industrial-grade -40 °C to +85 °C operation means the part can sit outdoors in weather-station or building-automation sensor pods, and the 2.5 V minimum supply is friendly to battery or energy-harvesting rails when paired with a boost converter. The 8 MHz core executes oversampling and digital-filtering routines with deterministic cycle counts, and the 32 KB OTP holds full look-up tables for sensor linearization and unit conversion.
Được đề xuất
Motor Control Subsystem
In brushed-DC and stepper motor control subsystems, the PIC17LC756AT-08I/L provides the response time and PWM resolution required for closed-loop speed or position control. The 8 MHz instruction cycle (121 ns) keeps phase-margin tight in 20 kHz PWM loops, and the capture/compare/PWM peripherals generate complementary drive waveforms for H-bridge drivers without software overhead. The ADC samples shunt resistors for current-mode control, while the UART exposes the controller to a host PLC or motion controller. Industrial temperature grade and the 68-PLCC ruggedized package suit the part for factory-floor inverter cabinets and machine-tool servo boards.
Được đề xuất
Medical Monitoring Device (Non-Critical)
For non-critical medical monitoring devices such as fitness equipment heart-rate displays, blood-pressure cuffs, and pulse oximeters (non-diagnostic), the PIC17LC756AT-08I/L offers ample program memory for filtering algorithms and on-screen menus while keeping the bill-of-materials cost low. The 12-channel ADC reads multiple bio-sensor signals, the UART streams data to a paired Bluetooth or Wi-Fi module, and the 2.5 V to 5.5 V supply tolerance simplifies battery-power designs (2x AA cells). Designers should note that this part is not FDA-qualified for life-support or diagnostic applications - refer to medical-grade Microchip families for those use cases.
Được đề xuất
Legacy Embedded System Maintenance
The PIC17LC756AT-08I/L is frequently chosen to sustain legacy embedded products whose original 8-bit MCU is still required for firmware compatibility or regulatory re-certification. Because the instruction set, peripheral register map, and 68-PLCC footprint match other PIC17C derivatives, designers can swap the silicon revision without rewriting application code. The long-life-cycle status of the PIC17 family and Microchip's continued production support through 2026 and beyond make this part a low-risk choice for industrial machinery, avionics subsystems, and medical devices with multi-decade service obligations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17LC756AT-08I/L — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC17C756AT-33I/L | PIC17LC756A-08I/L | PIC17LC756AT-08/L | PIC17LC756AT-08I/PT | PIC17LC752T-08I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (24.23x24.23) | 68-PLCC (24.23x24.23) - same | 68-PLCC (24.23x24.23) - same | 68-PLCC (24.23x24.23) - same | 68-TQFP | 68-PLCC (24.23x24.23) - same |
| Core | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 678 bytes |
| Max Clock Frequency | 8 MHz | 33 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| ADC | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit |
Bảo phân biệt quan trọng
- Same 32 KB OTP memory and 902-byte RAM across the LC family (vsPIC17LC752T-08I/L)
- Low-voltage CMOS (LC) variant supports 2.5 V minimum rail (vsPIC17C756AT-33I/L)
- Industrial -40 °C to +85 °C temperature grade (vsPIC17LC756AT-08/L)
Ghi chú thiết kế
The PIC17LC756AT-08I/L tolerates 2.5 V to 5.5 V on VDD. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (4 VDD pins on the 68-PLCC) and add a single 10 µF bulk capacitor at the package entry point. The LC low-voltage variant has lower quiescent current than the standard 17C part and is preferred for battery or energy-harvesting supplies.
The 68-PLCC footprint requires a JEDEC-standard land pattern with J-leads on all four sides. Allow at least 2 mm of clearance around the package for socket tooling if you plan to use a PLCC socket during prototype bring-up. Keep clock traces (OSC1/OSC2) short and guard them from switching I/O to avoid injection of noise into the oscillator block.
Because the part uses OTP program memory, you cannot erase and re-program it once written. Develop firmware on a windowed (JW) or UV-erasable PIC17 variant, then commit the final code to the PIC17LC756AT-08I/L for production. Do not exceed the maximum supply voltage of 5.5 V even briefly - the OTP cell programming circuitry shares VDD and may be damaged by transients above the rating.
When routing the 12 ADC channels, dedicate one analog ground (VSS) pin and one analog VDD pin to the ADC power path and keep digital return currents off the analog ground star point. Use guard traces around high-impedance analog inputs (RA0-RA5 / RE0-RE5) to minimize leakage-induced offset errors on the 10-bit ADC.
Thông tin tuân thủ
RoHS and REACH compliance confirmed via Microchip product page and DigiKey listing. This is an industrial-grade part, not AEC-Q100 qualified for automotive - consider PIC18 or dsPIC33 automotive families if automotive qualification is required.
