PIC16LC65AT-04/PT - 8-bit MCU, 7KB OTP, 4MHz, 44-TQFP | Microchip
料号： PIC16LC65AT-04/PT ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.75 | $67.50 |
| 100 | $5.95 | $595.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.65 | $4,650.00 |
PIC16LC65AT-04/PT 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and peripheral interfaces. Within the broader taxonomy, an MCU belongs to the category of microcontrollers, which in turn fall under embedded processors and digital ICs. The PIC16C family specifically targets low-cost, high-performance 8-bit applications using a Harvard-architecture RISC core with a small, deterministic instruction set ideal for real-time control.
Key features of the PIC16LC65AT-04/PT include a 14-bit wide instruction word, an integrated watchdog timer, power-saving SLEEP mode, and parallel slave port support. The wide 2.5 V to 6.0 V supply range allows operation from both 3.3 V and 5 V rails commonly used in industrial and consumer designs. The 'LC' suffix denotes the low-power CMOS process variant, and the 'T' denotes tape-and-reel packaging for high-volume assembly.
The device uses a fully-static CMOS design, allowing the clock to be stopped and restarted without losing internal state - a key feature for low-power sleep/wake duty-cycled applications. With 33 I/O lines, designers have ample connectivity for sensors, buttons, displays, and external peripheral chips.
Typical applications include industrial control panels, simple sensor interfaces, low-cost motor control, appliance control boards, and embedded data-acquisition front ends. The integrated I2C/SPI/UART peripherals make it well suited as a communication gateway or slave controller. The 44-TQFP package provides a manageable footprint for hand-rework-friendly prototypes while remaining compatible with automated SMT lines.
When designing with this device, note that OTP memory cannot be reprogrammed, so code must be fully validated before committing. For new designs, consider migrating to the flash-based PIC16F877A or PIC16F887 family (same 44-pin TQFP footprint, drop-in compatible pinout) to enable in-system reprogramming and shorter development cycles.
This page synthesizes current distributor pricing, drop-in compatible Microchip alternatives from the same PIC16 family, and practical design guidance not found in the bare datasheet.
直接替换替代料： PIC16LC65AT-04/PT ——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： PIC16LC65AT-04/PT （相同外形与封装尺寸） ——差异在于 ADC, Program Memory Size, Program Memory Type, Timers, RAM Size.
快速对比工具——选择替代料号进行并排对比：
PIC16F877A-I/PT
✅ 直接替换✓ 有现货
$4.95 / 个
查看数据手册 →PIC16F877-04/PT
✅ 直接替换✓ 有现货
$5.2 / 个
查看数据手册 →PIC16F887-I/PT
✅ 直接替换✓ 有现货
$1.66 / 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 →PIC16F914-I/PT
✅ 直接替换✓ 有现货
$2.98 / 个
查看数据手册 →PIC16LC65AT-04/PT 最大额定值与电气特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 192 x 8 bytes |
| Maximum CPU Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Number of I/O Pins | 33 |
| 封装 / 外壳 | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Peripherals | I2C, SPI, UART/USART |
| Instruction Word Width | 14-bit |
| Oscillator Type | External |
| Connectivity | I2C, SPI, UART/USART |
| Program Memory Type | OTP (One-Time Programmable) |
| RoHS 状态 | unknown |
PIC16LC65AT-04/PT 引脚配置
| 引脚 1 | OSC1/CLKIN — Oscillator input or external clock input |
| 引脚 2 | OSC2/CLKOUT — Oscillator output or clock output |
| 引脚 3 | MCLR/VPP — Master clear reset or programming voltage input |
| 引脚 4 | RA0 — PORTA bit 0 (digital I/O or analog input AN0) |
| 引脚 5 | RA1 — PORTA bit 1 (digital I/O or analog input AN1) |
| 引脚 6 | RA2 — PORTA bit 2 (digital I/O or analog input AN2) |
| 引脚 7 | RA3 — PORTA bit 3 (digital I/O or analog input AN3) |
| 引脚 8 | RA4 — PORTA bit 4 (digital I/O, open-drain) |
| 引脚 9 | RA5 — PORTA bit 5 (digital I/O or analog input AN4) |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply voltage (2.5 V to 6.0 V) |
| 引脚 12 | RB0/INT — PORTB bit 0 / external interrupt |
| 引脚 13 | RB1 — PORTB bit 1 |
| 引脚 14 | RB2 — PORTB bit 2 |
| 引脚 15 | RB3 — PORTB bit 3 |
| 引脚 16 | RB4 — PORTB bit 4 |
| 引脚 17 | RB5 — PORTB bit 5 |
| 引脚 18 | RB6 — PORTB bit 6 / in-circuit debugger pin |
| 引脚 19 | RB7 — PORTB bit 7 / in-circuit debugger pin |
| 引脚 20 | VSS — Ground reference |
| 引脚 21 | VDD — Positive supply voltage |
| 引脚 22 | RC0 — PORTC bit 0 (digital I/O or timer1 oscillator) |
| 引脚 23 | RC1 — PORTC bit 1 (digital I/O or timer1 oscillator) |
| 引脚 24 | RC2 — PORTC bit 2 (digital I/O or CCP1) |
| 引脚 25 | RC3 — PORTC bit 3 (digital I/O or SCL/I2C clock) |
| 引脚 26 | RC4 — PORTC bit 4 (digital I/O or SDA/I2C data) |
| 引脚 27 | RC5 — PORTC bit 5 (digital I/O or SDO) |
| 引脚 28 | RC6 — PORTC bit 6 (digital I/O or TX/CK) |
| 引脚 29 | RC7 — PORTC bit 7 (digital I/O or RX/DT) |
| 引脚 30 | VSS — Ground reference |
| 引脚 31 | VDD — Positive supply voltage |
| 引脚 32 | RD0 — PORTD bit 0 (digital I/O or PSP data) |
| 引脚 33 | RD1 — PORTD bit 1 (digital I/O or PSP data) |
| 引脚 34 | RD2 — PORTD bit 2 (digital I/O or PSP data) |
| 引脚 35 | RD3 — PORTD bit 3 (digital I/O or PSP data) |
| 引脚 36 | RD4 — PORTD bit 4 (digital I/O or PSP data) |
| 引脚 37 | RD5 — PORTD bit 5 (digital I/O or PSP data) |
| 引脚 38 | RD6 — PORTD bit 6 (digital I/O or PSP data) |
| 引脚 39 | RD7 — PORTD bit 7 (digital I/O or PSP data) |
| 引脚 40 | VSS — Ground reference |
| 引脚 41 | VDD — Positive supply voltage |
| 引脚 42 | RE0 — PORTE bit 0 (digital I/O or AN5 / RD) |
| 引脚 43 | RE1 — PORTE bit 1 (digital I/O or AN6 / WR) |
| 引脚 44 | RE2 — PORTE bit 2 (digital I/O or AN7 / CS) |
典型应用
PIC16LC65AT-04/PT 适用于 6 应用s: Industrial Control Panels, Appliance Control Boards, Sensor Interface / Data Acquisition Front End, Simple Motor and Solenoid Drivers, Communication Gateway / Protocol Bridge, Embedded Data Logger (Sensor to EEPROM).
Industrial Control Panels
The PIC16LC65AT-04/PT fits industrial control panel designs that need a deterministic 8-bit core, 33 I/O lines for keypads and indicator LEDs, and reliable serial communication to downstream drivers. Its 2.5 V to 6.0 V supply tolerates the unregulated 24 V-to-5 V rails typical in factory equipment. The 4 MHz clock is sufficient for scan-loop polling of switches and PWM-driven buzzers. Compared with switching to a 32-bit MCU, this part keeps BOM cost low for high-volume appliance and panel products.
推荐
Appliance Control Boards
White-goods and small appliance controllers benefit from the PIC16LC65AT-04/PT's low power consumption, integrated I2C/SPI/UART, and 44-TQFP SMT compatibility with automated assembly lines. Its 7 KB OTP program memory is well-matched to fixed-function firmware (wash cycles, fan speed control, sensor readouts). The wide voltage range lets the same design operate from 3.3 V battery-backed or 5 V mains-derived rails. For cost-sensitive high-volume runs, OTP is actually preferred to lock firmware against field tampering.
推荐
Sensor Interface / Data Acquisition Front End
Use the PIC16LC65AT-04/PT as a low-cost sensor hub that aggregates readings from I2C or SPI sensors and reports them over UART to a host processor. Its 4 MHz clock and 192-byte RAM can comfortably handle polled sensor reads at 10-100 Hz with light averaging. The 33 I/O pins support multiple chip-select lines for SPI sensor stacks. As a slave controller in a larger embedded system, it offloads housekeeping from the main application processor, freeing it for higher-level tasks.
推荐
Simple Motor and Solenoid Drivers
The PIC16LC65AT-04/PT can drive low-side MOSFET switches or relays for small DC motors and solenoids through its GPIO pins. Its 4 MHz instruction rate easily generates PWM at audio-subsonic frequencies for motor-speed or valve-position control. The integrated UART allows command input from a master controller, while SPI/I2C connect to position encoders or current sensors. OTP memory locks the safety-critical control algorithm, preventing accidental firmware changes in the field.
推荐
Communication Gateway / Protocol Bridge
Deploy the PIC16LC65AT-04/PT as a bridge between I2C sensor networks and a UART-attached host (PC, modem, or another MCU). Its three hardware serial peripherals (I2C, SPI, UART) let it translate between buses without software bit-banging, reducing CPU load. 192 bytes of RAM is enough for short packet buffers in polling-mode bridges. For industrial Modbus-RTU or similar protocols, the deterministic instruction timing simplifies timing-budget calculations versus 32-bit Cortex-M parts.
推荐
Embedded Data Logger (Sensor to EEPROM)
Pair the PIC16LC65AT-04/PT with an external I2C EEPROM to build a compact data logger for unattended sensor recording. The 4 MHz core, watchdog timer, and SLEEP mode enable long battery life by waking periodically, sampling, and returning to sleep. UART output allows log retrieval without removing the device. OTP firmware locks the recording algorithm, ensuring field deployments cannot be accidentally reprogrammed. The 44-TQFP package suits conformal-coated outdoor or industrial enclosures.
推荐
推荐产品汇总
工程参考数据： PIC16LC65AT-04/PT ——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 | PIC16F877A-I/PT | PIC16F877-04/PT | PIC16F887-I/PT | PIC16LC65A-04I/PQ | PIC16F914-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-MQFP (PQ) - same die, different package | 44-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (7 KB) | Flash (14 KB) | Flash (14 KB) | Flash (14 KB) | OTP (7 KB) | Flash (14 KB) |
| Program Memory Size | 7 KB (4K x 14) | 14 KB (8K x 14) | 14 KB (8K x 14) | 14 KB (8K x 14) | 7 KB (4K x 14) | 14 KB (8K x 14) |
| RAM Size | 192 x 8 bytes | 368 x 8 bytes | 368 x 8 bytes | 368 x 8 bytes | 192 x 8 bytes | 368 x 8 bytes |
| Maximum CPU Speed | 4 MHz | 20 MHz | 4 MHz | 20 MHz | 4 MHz | 20 MHz |
| Number of I/O Pins | 33 | 33 | 33 | 36 | 33 | 36 |
| Supply Voltage Range | 2.5 V to 6.0 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 6.0 V | 2.0 V to 3.6 V |
| Peripherals | I2C, SPI, UART/USART | I2C, SPI, UART/USART, ADC | I2C, SPI, UART/USART, ADC | I2C, SPI, UART/USART, ADC, nanoWatt | I2C, SPI, UART/USART | I2C, SPI, UART/USART, LCD driver |
| Lifecycle Status | NRND | Active | Active | Active | NRND | Active |
关键差异点
- Flash-based reprogrammability （对比 PIC16LC65A-04I/PQ)
- Higher CPU clock headroom （对比 PIC16F877-04/PT)
- Long-term availability （对比 PIC16F914-I/PT)
设计说明
The PIC16LC65AT-04/PT uses OTP (One-Time Programmable) memory, so each unit can only be programmed once. Validate firmware on a flash-based equivalent (PIC16F877A-I/PT) or a socketed PIC16C65A development setup before committing to OTP production. Programming errors or firmware bugs discovered after programming result in scrapped silicon.
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of each VDD pin (the device has multiple VDD pins on a 44-TQFP). Add a bulk 10 uF tantalum or aluminum polymer capacitor at the board's supply input. The PIC16LC65A family is sensitive to supply ripple during ADC conversions if used; keep analog and digital VDD traces short and separated if mixing analog and digital loads.
For the 44-TQFP (10x10 mm) package, route traces on a 4-layer PCB with a continuous ground plane beneath the IC. Keep the MCLR/VPP trace short and add a 10 kohm pull-up to VDD; if in-circuit programming is desired, expose the ICSP pins (RB6/RB7, MCLR) to a 5-pin header. Avoid long parallel runs to high-frequency signals to reduce crosstalk into the analog-input capable PORTA pins.
合规信息
RoHS and REACH compliance status not explicitly stated in verified distributor data; Microchip's product environmental compliance documents should be consulted for definitive answers. Part is not AEC-Q100 qualified (industrial/commercial grade only).