PIC16LC770-E/SO - 8-Bit 3.5KB OTP MCU, 20MHz, 20-SOIC | Microchip
MPN: PIC16LC770-E/SO ✗ Cuối đờiPIC16LC770-E/SO Tóm tắt
An 8-bit PIC microcontroller is a compact computing core built on a Harvard RISC architecture that executes instructions fetched from non-volatile program memory while accessing data from a separate RAM bank. Microcontrollers in this class integrate the CPU, memory, and a defined set of peripherals (I/O ports, timers, ADC, comparators) into a single chip, serving as the embedded brain for simple control loops, sensor interfaces, and user-interface tasks. The PIC16LC770 sits within the broader PIC16 mid-range family, between the smaller PIC16F series and the higher-pin-count PIC17/PIC18 devices, and is positioned for cost-sensitive industrial, appliance, and consumer applications.
Key specifications include 16 digital I/O pins, a 12-bit 6-channel ADC, two analog comparators, three timers (Timer0/Timer1/Timer2), an internal oscillator, and an instruction cycle time of 200 ns at 20 MHz. The OTP memory means the program is written once and is non-erasable, which is a typical trade-off for cost-driven production runs versus flash-based PIC16F alternatives. According to the manufacturer datasheet, the device supports in-circuit serial programming (ICSP) for factory programming and field updates before sealing.
Architecturally, the PIC16LC770 uses a 14-bit instruction word with a single accumulator-based ALU, an 8-level hardware stack for nested subroutines, and a peripheral feature set tuned for analog signal conditioning. The 6-channel 12-bit ADC is a key value-driver versus older 8-bit ADC-equipped PICs, and the dual analog comparators enable standalone threshold detection without CPU loading.
Typical applications include industrial control modules, sensor signal conditioning, motor control interfaces, white-goods and appliance controllers, and low-cost data-acquisition front-ends. The wide 3.3V/5V operating range and 20 MHz performance are sufficient for moderate control loops and serial-protocol bridging (UART/SPI/I2C bit-banged or hardware).
When designing with the PIC16LC770-E/SO, note that OTP memory cannot be reprogrammed in-circuit by the end user; for development cycles a flash-based sibling such as PIC16F or PIC16LF is recommended, then migrate to OTP for production. Programming must occur before PCB conformal coating.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC770-E/SO — 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 PIC16LC770-E/SO (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, Program Memory Size, Core.
PIC16LC770-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC770/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC770T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC770-E/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC770T/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC770-E/SO Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC |
| Core Size | 8-bit |
| Series | PIC16LC770 |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 256 B |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Number of I/O Pins | 16 |
| Operating Voltage Range | 3.3 V / 5 V |
| ADC | 12-bit, 6 channels |
| Analog Comparators | 2 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Oscillator Type | Internal |
| Nhiệt độ hoạt động | -40 C to +125 C (E suffix, extended industrial) |
| Hộp | 20-SOIC (0.295", 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Program Memory Type | OTP (One-Time Programmable) |
| Connectivity | UART, SPI, I2C (via peripherals) |
Cấu hình chân PIC16LC770-E/SO
| Chân 1 | RA2/AN2 — Digital I/O / analog input channel 2 |
| Chân 2 | RA3/AN3/CMP1 — Digital I/O / analog input channel 3 / comparator 1 output |
| Chân 3 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Chân 4 | RA5/MCLR — Digital I/O / master clear reset (input) |
| Chân 5 | Vss — Ground reference |
| Chân 6 | RB0/INT — Digital I/O / external interrupt |
| Chân 7 | RB1 — Digital I/O |
| Chân 8 | RB2 — Digital I/O |
| Chân 9 | RB3 — Digital I/O |
| Chân 10 | RB4 — Digital I/O |
| Chân 11 | RB5 — Digital I/O |
| Chân 12 | RB6 — Digital I/O |
| Chân 13 | RB7 — Digital I/O |
| Chân 14 | Vdd — Positive supply voltage (3.3 V / 5 V) |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal / clock output |
| Chân 16 | OSC1/CLKIN — Oscillator crystal / external clock input |
| Chân 17 | RA0/AN0 — Digital I/O / analog input channel 0 |
| Chân 18 | RA1/AN1 — Digital I/O / analog input channel 1 |
| Chân 19 | RA6 — Digital I/O (OSC2 alternate) |
| Chân 20 | RA7 — Digital I/O (OSC1 alternate) |
Ứng dụng tiêu biểu
PIC16LC770-E/SO phù hợp cho 6 Áp dụngs: Industrial Control Module, Sensor Signal Conditioning Front-End, White-Goods Appliance Controller, Low-Cost Data-Acquisition Module, Motor Control Interface Board, Consumer Remote Keyfob Receiver.
Industrial Control Module
The PIC16LC770-E/SO fits industrial control modules that need a low-cost 8-bit MCU capable of digital I/O expansion and basic analog monitoring. With 16 GPIO pins and a 12-bit 6-channel ADC running off a 20 MHz core, it can scan 4-6 sensor inputs at 1 kHz while servicing digital outputs for relays and indicator LEDs. The -40 C to +125 C extended industrial temperature range allows placement inside sealed enclosures near motors or transformers. Power consumption is sub-10 mA at 5 V, fitting 24 V industrial rails stepped down with a small LDO. Compare to PIC16F877A which adds flash reprogrammability but at higher BOM cost.
Được đề xuất
Sensor Signal Conditioning Front-End
The PIC16LC770-E/SO serves well as a sensor signal-conditioning front-end for thermocouple, RTD, and bridge-sensor conditioning boards. The 12-bit ADC and dual analog comparators enable direct connection to amplified thermocouple outputs, while the 3.3 V/5 V operating range supports both legacy and modern sensor analog chains. At 20 MHz the CPU performs linearization and cold-junction compensation in well under 100 ms per sample. OTP memory makes the BOM cost competitive for high-volume industrial sensor products. Consider pairing with MCP6N16 instrumentation amp and MCP9700 temperature sensor for a complete thermocouple conditioning sub-system.
Được đề xuất
White-Goods Appliance Controller
The PIC16LC770-E/SO is a strong fit for white-goods appliance controllers such as washing machines, dishwashers, and refrigerator sub-boards where the BOM must stay under 1 USD per MCU and firmware is locked at production. The 16 GPIO pins drive keypads, 7-segment displays, relay coils, and triac interfaces directly through the 20-SOIC package. The 12-bit ADC reads water-level, temperature, and motor-speed feedback with 0.024% resolution. OTP memory eliminates field-reprogramming attack surface and reduces firmware piracy risk. The extended -40 C to +125 C temperature range handles inside-refrigerator or behind-dryer thermal environments. Compare to PIC16F1939 which adds LCD driver and RTC.
Được đề xuất
Low-Cost Data-Acquisition Module
The PIC16LC770-E/SO suits low-cost data-acquisition modules that stream 6 analog channels over UART or SPI to a host processor. With a 12-bit ADC sampling at up to 100 kS/s aggregate and an internal UART/SPI peripheral set, the MCU functions as a remote ADC front-end, packetizing channel data at 1-10 Hz typical rates. The 3.5 KB program memory holds a Modbus RTU slave firmware and calibration tables, while 256 B RAM is sufficient for 16-byte Modbus PDUs. The -40 C to +125 C range tolerates outdoor cabinet mounting. Compared to PIC16F1705 which adds op-amps and DAC, the PIC16LC770 achieves lower unit cost at the cost of flash reprogrammability.
Được đề xuất
Motor Control Interface Board
The PIC16LC770-E/SO handles motor-control interface boards in small DC and stepper motor drives where a full DSP/MCU is overkill. The 16 GPIO pins drive direction, enable, and fault lines to a stepper driver such as the DRV4026, while the 12-bit ADC samples motor current shunt amplifiers for closed-loop torque limiting. The 20 MHz core delivers a 200 ns instruction cycle that supports PWM edge placement at 25 kHz switching frequency with under 1% duty-cycle resolution. The OTP memory locks the firmware to prevent motor-tuning tampering in production. Compare to dsPIC30F2010 which adds DSP instructions for field-oriented control of BLDC motors.
Được đề xuất
Consumer Remote Keyfob Receiver
The PIC16LC770-E/SO is used in consumer remote keyfob and garage-door receiver boards where BOM cost is paramount and the firmware is locked at production. The MCU decodes OOK/FSK demodulated signals from an ASK/FSK receiver IC at bit rates up to 10 kbps using a Timer0 capture input. The 3.3 V operating mode draws sub-5 mA on a CR2032 coin cell for multi-year standby. The 3.5 KB OTP memory holds a rolling-code algorithm and button debounce tables. The -40 C to +85 C industrial range covers outdoor garage-door environments. The internal oscillator eliminates an external crystal for further BOM savings. Compare to PIC16F15313 which adds 5-bit DAC and Configurable Logic Cells.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC770-E/SO — 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 | PIC16LC770-I/SO | PIC16LC770/SO | PIC16LC770T-I/SS | PIC16LC770-E/P | PIC16LC770T/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (0.295") | 20-SOIC (0.295") | 20-SOIC (0.295") | 20-SSOP (5.30 mm) | 20-PDIP | 20-SOIC (0.295") |
| Program Memory Size | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP |
| RAM Size | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40 C to +125 C (E suffix) | -40 C to +85 C (I suffix) | 0 C to +70 C (commercial) | -40 C to +85 C (I suffix) | -40 C to +125 C (E suffix) | 0 C to +70 C (commercial) |
| Operating Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Extended industrial -40 C to +125 C temperature range (vsPIC16LC770/SO)
- Same die across all PIC16LC770 variants for predictable migration (vsPIC16F877A-I/P)
- OTP memory eliminates firmware piracy in high-volume runs (vsPIC16F630-I/SL)
Ghi chú thiết kế
PIC16LC770-E/SO program memory is OTP, NOT flash. There is no in-system reprogramming path; firmware bugs require board-level OTP programming at the factory or a complete MCU swap. Prototype cycles should use a flash-based sibling such as PIC16F877A-I/P or PIC16F1939-I/P to validate firmware before committing to OTP production runs. Once sealed (potting or conformal coating), an OTP bug becomes a board-scrapping event.
The 20-SOIC (0.295 inch / 7.50 mm body width) footprint is the largest SOIC profile and must be allocated adequate PCB real estate. The exposed pad is NOT present on PIC16LC770-E/SO - thermal dissipation is through the SOIC leads only, which is sufficient at 20 MHz but means Vdd/Vss traces must be wide (>= 0.5 mm) to handle inrush during ADC sampling bursts. Place a 100 nF decoupling cap within 5 mm of the Vdd pin and a 10 uF bulk cap on the same rail. Add a 100 kohm pull-up on MCLR for clean reset behavior.
Power consumption at 5 V and 20 MHz is approximately 10 mA typical; at 3.3 V it drops to roughly 4 mA, supporting battery-powered designs. The internal oscillator eliminates an external crystal and saves 2-3 mA additional quiescent draw, but trades 1-2% frequency accuracy versus a crystal-driven OSC1/OSC2 pair. For UART communication above 9600 baud, prefer the external crystal configuration; for sub-2400 baud remote-control applications, the internal oscillator is adequate.
Route the analog ADC inputs (RA0-RA3, RA5) on a dedicated analog ground island with a single tie-point to the digital ground near the Vss pin, to avoid digital switching noise coupling into the 12-bit ADC readings. The ADC reference voltage (Vref) input is shared with the Vdd rail by default; for precision readings, drive Vref from an external low-noise reference such as MCP1525 or LM4040 instead of Vdd directly. Keep ADC traces short and away from PWM or relay-driver traces to avoid switching-noise artifacts.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; AEC-Q100 not applicable as this is a general-purpose MCU; halogen-free status not explicitly confirmed in verified data.
