PIC16LC65B-04/PQ - 8-Bit 4MHz OTP MCU 7KB 33 I/O | Microchip
料号： PIC16LC65B-04/PQ ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.78 | $37.80 |
| 100 | $3.2 | $320.00 |
| 500 | $2.83 | $1,415.00 |
| 1,000 | $2.5 | $2,500.00 |
PIC16LC65B-04/PQ 概述
What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a small computer-on-a-chip built around an 8-bit data bus, integrating a CPU core, program memory (here, OTP - one-time-programmable EPROM), data RAM, and peripherals into a single IC. OTP memory is programmed once and cannot be erased, making it ideal for high-volume production runs where code stability is locked. Within the broader semiconductor taxonomy, this part belongs to the microcontroller (MCU) category, which sits under microcontrollers and microprocessors in the integrated circuits hierarchy.
Key features include 33 bidirectional I/O pins, an integrated analog-to-digital converter (ADC), three timer/counter modules, a USART for serial communication, and a synchronous serial port (SSP). The OTP program memory supports in-circuit serial programming (ICSP) via two pins, enabling production-line programming without removing the part. The MQFP-44 package provides ample pin count for embedded control tasks while maintaining a modest 10x10 mm footprint.
Typical applications include industrial control systems, automotive body electronics, sensor interface modules, appliance controllers, and embedded data acquisition devices. The wide 2.5V-5.5V operating range allows direct connection to a single lithium cell, three alkaline cells, or regulated 5V rails, simplifying power supply design. Three timer/counter modules plus a USART support motor control, PWM generation, and master/slave multi-drop communication links.
When designing with this device, note that OTP memory cannot be re-programmed; use the PIC16F65B or PIC16C65B flash/UV-erase equivalents for prototyping and field updates. Operating temperature is 0C to +70C (commercial grade); choose the PIC16LC65BT-04I/PQ industrial variant (-40C to +85C) for outdoor or automotive under-hood deployments.
This page synthesizes current distributor pricing, drop-in Microchip PIC16 family alternatives, and practical MQFP-44 design notes not found in the manufacturer datasheet alone, helping engineers quickly evaluate substitutes and source decisions for production runs.
直接替换替代料： PIC16LC65B-04/PQ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LC65B-04/PQ （相同外形与封装尺寸） ——差异在于 ADC, Program Memory Size, Core Architecture, Operating Temperature, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC16LC65BT-04/PQ
✅ 直接替换✓ 有现货
$5.04 / 个
查看数据手册 →PIC16LC65BT-04I/PQ
✅ 直接替换✓ 有现货
$5.45 / 个
查看数据手册 →PIC16LC65A-04I/PQ
✅ 直接替换✓ 有现货
$5.3 / 个
查看数据手册 →PIC16LC65A-04/PQ
✅ 直接替换✓ 有现货
$6.5 / 个
查看数据手册 →PIC16C65B-04/PQ
✅ 直接替换✓ 有现货
$10.25 / 个
查看数据手册 →PIC16F884-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LC65B-04/PQ 最大额定值与电气特性
| Family | PIC16CXX mid-range |
| Core | 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| 最大时钟频率 | 4 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V |
| 工作温度范围 | 0 C to +70 C (commercial) |
| Number of I/O Pins | 33 |
| ADC | Integrated |
| Timers/Counters | 3 |
| Communication Peripherals | USART, SSP (Synchronous Serial Port) |
| 封装 | MQFP-44 (10x10 mm) |
| 安装类型 | Surface Mount |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC16LC65B-04/PQ 引脚配置
| 引脚 1 | OSC1/CLKIN — Oscillator input / external clock input |
| 引脚 2 | OSC2/CLKOUT — Oscillator output / clock output |
| 引脚 3 | MCLR/VPP — Master clear reset / programming voltage input |
| 引脚 4 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| 引脚 5 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| 引脚 6 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| 引脚 7 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| 引脚 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 引脚 9 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SSP slave select |
| 引脚 10 | RE0/RD/AN5 — PORTE bit 0 / Read signal / Analog input 5 |
| 引脚 11 | RE1/WR/AN6 — PORTE bit 1 / Write signal / Analog input 6 |
| 引脚 12 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| 引脚 13 | VDD — Positive supply voltage |
| 引脚 14 | VSS — Ground reference |
| 引脚 15 | OSC1 — Oscillator crystal input (alternate) |
| 引脚 16 | OSC2 — Oscillator crystal output (alternate) |
| 引脚 17 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| 引脚 18 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| 引脚 19 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| 引脚 20 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 引脚 21 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 引脚 22 | RC5/SDO — PORTC bit 5 / SPI data out |
| 引脚 23 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| 引脚 24 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| 引脚 25 | VSS — Ground reference |
| 引脚 26 | RB0/INT — PORTB bit 0 / External interrupt |
| 引脚 27 | RB1 — PORTB bit 1 |
| 引脚 28 | RB2 — PORTB bit 2 |
| 引脚 29 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| 引脚 30 | RB4 — PORTB bit 4 |
| 引脚 31 | RB5 — PORTB bit 5 |
| 引脚 32 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 33 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 34 | VDD — Positive supply voltage |
| 引脚 35 | VSS — Ground reference |
| 引脚 36 | RD0 — PORTD bit 0 |
| 引脚 37 | RD1 — PORTD bit 1 |
| 引脚 38 | RD2 — PORTD bit 2 |
| 引脚 39 | RD3 — PORTD bit 3 |
| 引脚 40 | RD4 — PORTD bit 4 |
| 引脚 41 | RD5 — PORTD bit 5 |
| 引脚 42 | RD6 — PORTD bit 6 |
| 引脚 43 | RD7 — PORTD bit 7 |
| 引脚 44 | VSS — Ground reference |
典型应用
PIC16LC65B-04/PQ 适用于 6 应用s: Industrial Control Systems, Appliance Controllers, Sensor Interface Modules, Automotive Body Electronics, Embedded Data Acquisition, Consumer Electronics Controllers.
Industrial Control Systems
The PIC16LC65B-04/PQ fits industrial control systems through its 33 digital I/O pins, three 16-bit timer/counter modules capable of PWM generation, and integrated ADC for sensor readout. The 2.5V-5.5V supply range supports both 3.3V and 5V PLC backplanes. With 7KB OTP memory, the part locks firmware at production, preventing costly field tampering. The 4MHz clock is sufficient for relay sequencing, conveyor control, and machine-status monitoring loops. Designers should allocate adequate decoupling (100nF + 10uF) near VDD pins, and use the USART for Modbus RTU communication to a host controller.
推荐
Appliance Controllers
The PIC16LC65B-04/PQ serves washing machines, microwave ovens, and HVAC controllers where its 33 I/O pins drive seven-segment displays, keypads, and triac-control opto-isolators. The USART links to inverter boards or wireless modules for smart-appliance connectivity. OTP memory at 7KB fits mid-complexity user-interface firmware including menu navigation, timer logic, and fault detection. The 0C to +70C commercial temperature range covers indoor appliance environments; for outdoor units, choose the PIC16LC65BT-04I/PQ industrial variant. Power consumption under the LC process is approximately 2 mA active at 4MHz, suitable for always-on control boards.
推荐
Sensor Interface Modules
The PIC16LC65B-04/PQ handles multi-sensor data acquisition with its integrated ADC, supporting temperature, pressure, and humidity transducers in process-control cabinets. The synchronous serial port (SSP) interfaces SPI sensors and EEPROM data loggers, while the USART streams readings to a SCADA host at 9600-115200 baud. Low-power LC operation at 2.5V enables battery-backed sensor nodes that draw less than 5 mA active. With 192 bytes RAM, the part buffers several sample channels before transmission. For high-accuracy measurement, run the ADC at 4MHz ECLK with appropriate acquisition time and use averaging filters in firmware.
推荐
Automotive Body Electronics
Although the PIC16LC65B-04/PQ is commercial grade, it serves non-critical body-electronics modules such as interior lighting, seat-position memory, and door-lock controllers where the 0C to +70C range suffices. The 33 I/O drive LED arrays, motor bridges, and switch matrices directly through appropriate driver stages. The USART links to body control modules for diagnostic communication; the ADC reads potentiometer wiper positions for seat adjustment. For under-hood or outdoor automotive use, the PIC16LC65BT-04I/PQ industrial variant extends temperature coverage to -40C to +85C, meeting most passenger-compartment requirements.
推荐
Embedded Data Acquisition
The PIC16LC65B-04/PQ performs portable data logging in field instruments where its 2.5V minimum supply allows three-alkaline-cell operation for hundreds of hours. The 7KB OTP holds compact firmware for sampling, time-stamping, and storing readings to external EEPROM via SSP. With 192 bytes RAM, the device buffers sample bursts before committing to non-volatile storage. The 4MHz clock runs the ADC conversion and SPI transfer with margin. Engineers should add a hardware watchdog and brown-out reset to survive battery end-of-life; an external 32.768 kHz crystal can drive Timer1 for real-time-clock accuracy when wall power is absent.
推荐
Consumer Electronics Controllers
The PIC16LC65B-04/PQ powers remote controls, toys, gaming peripherals, and small home appliances where cost per unit matters and OTP memory eliminates the need for code protection. Its 33 I/O drive IR LEDs, character LCDs, keypads, and audio feedback buzzers. The synchronous serial port connects to character LCD modules and SPI peripherals. At 4MHz clock, the device generates accurate IR carrier frequencies (38-56 kHz) for remote protocols. Designers should budget code size carefully since OTP cannot be reprogrammed; reserve the final 256 words for bootloader hooks if future migration to flash variants is anticipated. The 44-MQFP package suits compact handheld enclosures.
推荐
推荐产品汇总
工程参考数据： PIC16LC65B-04/PQ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16LC65BT-04/PQ | PIC16LC65BT-04I/PQ | PIC16LC65A-04I/PQ | PIC16C65B-04/PQ | PIC16F884-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | MQFP-44 (10x10 mm) | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (F variant) |
| Supply Voltage Range | 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 | 4.5 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 256 bytes (F variant) |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash |
关键差异点
- Low-power LC process variant supports 2.5V minimum supply （对比 PIC16C65B-04/PQ)
- 33 I/O pins and integrated ADC in 44-MQFP （对比 PIC16LC63A-04I/SO)
- Same MQFP-44 footprint as flash-based PIC16F884 （对比 PIC16F884-I/PT)
设计说明
The PIC16LC65B-04/PQ draws approximately 2 mA active at 4MHz and 5V, and less than 1 uA in sleep mode. Place a 100nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 13, 34), with a bulk 10uF tantalum or aluminum electrolytic on the supply rail. For battery-powered designs, use the sleep mode aggressively and wake via watchdog timer or external interrupt to extend battery life into the multi-year range.
The MQFP-44 package has 0.8 mm lead pitch and 10x10 mm body size. Route signal traces on 0.2 mm (8 mil) width or finer, and provide a continuous ground plane beneath the IC to minimize EMI. Keep the MCLR/VPP trace short and isolated from switching signals; add a 10 kohm pull-up to VDD and a 100nF capacitor to ground for clean reset behavior. For ICSP programming, dedicate the RB6/PGC and RB7/PGD pins and route them to an in-circuit programming header.
Do not use OTP (one-time-programmable) memory for prototyping - once programmed, the device cannot be erased or reprogrammed. Use a flash-based PIC16F65B or PIC16F884 equivalent for development, then port the verified firmware to the OTP part for production. Also verify that the supply voltage does not exceed 5.5V absolute maximum, especially during ICSP programming when VPP can reach 13V on the MCLR pin.
合规信息
RoHS compliant per distributor listings. Commercial temperature grade only - not AEC-Q100 qualified for automotive under-hood use.
