PIC16LC66-04/SO - 8-Bit 4MHz MCU, 14KB OTP, 28-SOIC | Microchip
MPN: PIC16LC66-04/SO ✗ Cuối đờiPIC16LC66-04/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and configurable peripherals. The PIC16C family uses a Harvard RISC architecture that separates program and data buses, enabling simultaneous instruction fetch and data access. Within the broader taxonomy, the PIC16LC66 is a mid-range 8-bit MCU falling under the power-managed LC sub-family, sitting between basic PIC12/PIC14 devices and higher-pin PIC17/PIC18 parts.
Key features include on-chip peripherals for I2C (Master/Slave SPI-compatible), SPI, and UART/USART connectivity; capture/compare/PWM (CCP) modules for timing-critical control; an 8-channel 8-bit A/D converter for analog sensor interfacing; and a watchdog timer plus power-on reset for reliable standalone operation. The 'LC' suffix indicates the low-voltage CMOS process node, allowing operation down to 2.5V for battery-powered designs.
The 28-SOIC (0.295-inch / 7.50mm body width) package uses gull-wing leads and surface-mount construction, suitable for hand-soldering, reflow, and standard pick-and-place assembly. Commercial temperature grade (0C to +70C) targets consumer and industrial embedded systems rather than automotive. The OTP program memory is factory- or field-programmable once, with no in-circuit reprogramming, which differentiates this part from Flash-based PIC16F siblings.
Typical applications include industrial control panels, sensor interfaces, low-power remote controls, appliance control boards, and battery-operated data loggers. When designing with this device, ensure the oscillator selection (RC, XT, HS, LP) matches the 4MHz instruction rate, and verify the maximum I/O source/sink current of 25mA per pin to prevent port damage.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC66-04/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 PIC16LC66-04/SO (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Timers, Core Architecture, Operating Temperature.
PIC16LC66-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC66-04/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC63-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC63A-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC62A-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC58B-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC66-04/SO Tỷ lệ tối đa & tính chất điện
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Tần số xung maksimum | 4 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory Size | 14 KB (8K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 368 bytes |
| Number of I/O Pins | 22 |
| Supply Voltage Range | 2.5 V to 6 V |
| Khoảng nhiệt độ hoạt động | 0 C to +70 C (Commercial) |
| Hộp / Vỏ | 28-SOIC (0.295", 7.50mm width) |
| Kiểu lắp đặt | Surface Mount (Gull-Wing) |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, A/D 8x8-bit |
| Data Converters | 8-channel 8-bit A/D |
| Oscillator Type | External |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 (Unlimited) |
Cấu hình chân PIC16LC66-04/SO
| Chân 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| Chân 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 5 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / Voltage reference |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Chân 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI Slave Select |
| Chân 8 | RE0/RD/AN5 — Port E bit 0 / Read control for parallel slave port |
| Chân 9 | OSC1/CLKIN — Oscillator crystal input / External clock input |
| Chân 10 | OSC2/CLKOUT — Oscillator crystal output / Clock output |
| Chân 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| Chân 13 | RC2/CCP1 — Port C bit 2 / CCP1 PWM output |
| Chân 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 17 | RC6/TX/CK — Port C bit 6 / UART transmit / synchronous clock |
| Chân 18 | RC7/RX/DT — Port C bit 7 / UART receive / synchronous data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 22 | RB1 — Port B bit 1 |
| Chân 23 | RB2 — Port B bit 2 |
| Chân 24 | RB3/PGM — Port B bit 3 / LVP programming entry |
| Chân 25 | RB4 — Port B bit 4 |
| Chân 26 | RB5 — Port B bit 5 |
| Chân 27 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — Port B bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC16LC66-04/SO phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Board, Battery-Powered Remote Control, Appliance Control Board, HVAC Zone Controller Node, Smart Sensor Data Logger, Educational Microcontroller Trainer.
Industrial Sensor Interface Board
The PIC16LC66-04/SO's 8-channel 8-bit A/D converter and 22 digital I/O pins make it well suited for industrial multi-signal acquisition boards. The 4MHz instruction rate provides ample cycles for averaging, scaling, and transmitting sensor data over UART/USART. The 2.5V to 6V supply range accommodates both 3.3V and 5V analog sensor rails. Compared with discrete A/D + microcontroller solutions, the integrated MCU reduces BOM count by at least three components and PCB area by approximately 40 percent. The commercial temperature range (0C to +70C) covers most indoor industrial control panels; for harsher environments choose the /I variant. Brown-out detect and power-on reset add robustness to factory power-line disturbances.
Được đề xuất
Battery-Powered Remote Control
The PIC16LC66-04/SO's 2.5V to 6V supply range and low-voltage CMOS 'LC' process node deliver low quiescent current, ideal for handheld battery-powered remote controls. The MCU's 4MHz instruction clock, 14KB OTP program memory, and 22 I/O pins support multi-button matrix scanning plus IR LED modulation via the CCP/PWM module. Compared with a discrete 555-timer-based transmitter design, this MCU eliminates timing drift, enables programmable button mapping, and supports bi-directional UART feedback. Three alkaline cells (4.5V nominal) or two lithium coin cells (3V nominal) both fall within the safe operating envelope. Watchdog timer and brown-out reset protect against low-battery brown-out-induced firmware corruption.
Được đề xuất
Appliance Control Board
The PIC16LC66-04/SO's 22 I/O pins, PWM module, and A/D inputs fit common white-goods appliance control topologies (washing machines, dishwashers, microwave ovens, small kitchen appliances). The 8-bit core runs user-interface button scanning, LED/LCD multiplexing, motor PWM control via CCP, and temperature monitoring via on-chip A/D - replacing 2-3 discrete timers and a logic IC. The 28-SOIC gull-wing package handles standard IR-reflow assembly on high-volume SMT lines. According to Microchip's PIC16C6X datasheet, the integrated POR and brown-out reset provide reliable startup after power-line interruptions typical in appliance environments.
Được đề xuất
HVAC Zone Controller Node
The PIC16LC66-04/SO's UART/USART peripheral enables daisy-chained RS-485 networking of HVAC zone controllers throughout a building automation system. Each node measures local temperature via A/D, drives a damper servo via PWM, and reports to a central controller over the serial bus. The OTP memory locks in validated zone-control firmware to prevent unauthorized field reprogramming - a regulatory benefit for certified building automation. The 2.5V-6V supply range allows direct operation from a 24VAC-derived DC rail with appropriate rectification. Compared with a dedicated ASIC zone controller, this MCU is approximately 60 percent cheaper and supports late-stage firmware differentiation per zone.
Được đề xuất
Smart Sensor Data Logger
The PIC16LC66-04/SO combines 14KB OTP program memory and 368 bytes RAM for low-speed data acquisition and logging applications. The 8-channel 8-bit A/D sequentially samples sensors at the 4MHz instruction rate, with on-chip PWM driving a status indicator LED. I2C and SPI peripherals connect to external EEPROM for non-volatile log storage. Compared with an 8051-based logger, this PIC16C consumes less current at equivalent throughput, extending battery life in remote telemetry deployments. The 0C-70C commercial temperature range covers indoor monitoring and laboratory instrumentation; for outdoor use, the /I variant extends to -40C.
Được đề xuất
Educational Microcontroller Trainer
Universities and technical schools use the PIC16LC66-04/SO on embedded-systems trainer boards because its 28-SOIC footprint is easy to breadboard or socket-mount, and its 35-instruction RISC core lets students grasp fundamentals without the complexity of 32-bit parts. The CCP/PWM, A/D, I2C, SPI, and UART peripherals expose nearly every major embedded building block in one chip. The OTP memory discourages accidental reprogramming during student labs, preserving original test firmware. Compared with PIC16F877-based trainers, the PIC16LC66-04 trades Flash flexibility for a lower per-student cost in introductory courses.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC66-04/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 | PIC16LC66-04I/SO | PIC16LC66-04/SP | PIC16LC63-04/SO | PIC16LC63A-04/SO | PIC16LC62A-04/SO | PIC16LC58B-04/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SPDIP - drop-in (same die, different mounting) | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory | 14 KB OTP | 14 KB OTP - same | 14 KB OTP - same | 7 KB OTP - 50% less | 7 KB OTP - 50% less | 3.5 KB OTP - 75% less | 3.2 KB OTP - 77% less |
| RAM Size | 368 B | 368 B - same | 368 B - same | 192 B - 48% less | 192 B - 48% less | 128 B - 65% less | 73 B - 80% less |
| Max Clock Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Number of I/O Pins | 22 | 22 - same | 22 - same | 22 - same | 22 - same | 22 - same | 12 - 45% less |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) |
| Approx. Unit Price (qty 1) | US $3.80 | US $4.20 | US $4.10 | US $3.40 | US $3.30 | US $3.10 | US $2.90 |
Bảo phân biệt quan trọng
- Lowest-cost OTP MCU in the PIC16C family at 4MHz (vsPIC16LC63-04/SO)
- Commercial temperature grade at minimum cost (vsPIC16LC66-04I/SO)
- Surface-mount 28-SOIC for high-volume SMT lines (vsPIC16LC66-04/SP)
- Most I/O pins among 28-pin PIC16LC6x OTP variants (vsPIC16LC58B-04/SO)
Ghi chú thiết kế
The PIC16LC66-04/SO uses OTP (One-Time Programmable) memory - once a bit is programmed from 1 to 0 it cannot be erased. A firmware bug therefore scrapes the entire device, so validate code on a PIC16F76 or PIC16F877 Flash sibling before committing to OTP. Always use Microchip's ICSP programming header (RB6/RB7/MCLR/VDD/VSS) for prototype programming and bench-test full-temperature operation before locking production firmware.
The PIC16LC66-04/SO operates from 2.5V to 6V on VDD (pin 20), with VSS (pin 19) as ground. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of the VDD pin, and add a bulk 10uF tantalum or aluminum electrolytic at the PCB power-entry point. The on-chip brown-out reset and power-on reset eliminate the need for external reset supervisor ICs in most 5V designs.
Route the oscillator traces (OSC1/OSC2, pins 9/10) short and symmetric, with a ground guard ring on both sides if a crystal is used. Keep A/D analog traces (RA0-RA5) away from switching signals; place the A/D VREF capacitor at pin 5 with a 10nF ceramic to VSS. The 28-SOIC 7.50mm body width leaves ample room for trace routing on 2-layer PCBs.
At 4MHz clock, 5V supply, and full 22 I/O sourcing 25mA each, total power dissipation can reach approximately 550mW. Estimated: P_total = VDD x IDD_core + sum(I_IO x VDD). Use thermal vias under any exposed pad area and ensure ambient airflow keeps the SOIC junction below 100C. For high-current outputs (>20mA continuous), use external driver transistors to keep on-chip dissipation under 250mW.
Thông tin tuân thủ
RoHS-compliant per Microchip product documentation. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. Commercial temperature grade (0C to +70C). Halogen-free status not explicitly stated in retrieved web data - marked unknown per data authenticity rules.
