PIC16LC64AT-04I/PQ - 8-Bit PIC MCU, 4MHz, 3.5KB OTP, 44-MQFP
料号： PIC16LC64AT-04I/PQ ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.6 | $760.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $6.1 | $6,100.00 |
PIC16LC64AT-04I/PQ 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data memory (RAM), and peripheral interfaces on one die. Within the broader taxonomy, the PIC16LC64A belongs to the PIC16 mid-range family -> PIC16C sub-family -> OTP-based PIC16C6X series -> PIC16LC6X low-voltage CMOS series -> 8-bit microcontroller -> microcontroller unit -> embedded controller -> semiconductor IC. The PIC architecture is a Harvard RISC design with 35 single-word instructions and single-cycle execution (except program branches which take two cycles).
Key features include 128 bytes of RAM, 33 digital I/O pins, integrated peripherals such as PWM modules, Watchdog Timer (WDT), Brown-out Reset (BOR), Power-on Reset (POR), a synchronous serial port (SSP) supporting SPI/I2C, and a capture/compare/PWM (CCP) module. The core delivers deterministic 4MHz operation at 3.0V-5.5V, suitable for low-power battery-fed designs and industrial control loops. The 44-MQFP package provides compact board area while exposing the full peripheral set through dedicated pins.
The PIC16LC64A uses a modified Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. Its CMOS process and static design allow operation down to DC clock frequencies, and the integrated oscillator supports crystal, resonator, or external clock sources. The OTP program memory supports one-time programming, making this part cost-optimized for high-volume production where firmware is finalized.
Typical applications include industrial automation controllers, sensor interface modules, motor control peripherals, low-power consumer appliances, and embedded control subsystems requiring a low pin count with mid-range analog/digital integration. The wide operating voltage and industrial temperature grade suit automotive under-hood and factory-floor installations.
When designing with this MCU, ensure the configuration bits are set correctly to select the oscillator mode and disable unneeded peripherals to minimize quiescent current. The OTP memory is one-time programmable, so firmware must be fully validated before committing to production.
This page synthesizes distributor pricing, lifecycle status, drop-in alternatives within the 44-MQFP footprint, and practical engineering guidance not consolidated in the manufacturer datasheet alone.
直接替换替代料： PIC16LC64AT-04I/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： PIC16LC64AT-04I/PQ （相同外形与封装尺寸） ——差异在于 Package, Program Memory Size, Program Memory Type, RAM Size, Instruction Set.
快速对比工具——选择替代料号进行并排对比：
PIC16LC64A-04I/PQ
✅ 直接替换✓ 有现货
$4.62 / 个
查看数据手册 →PIC16LC64AT-04I/L
✅ 直接替换✓ 有现货
$7.5 / 个
查看数据手册 →PIC16LC64AT-04/PT
✅ 直接替换✓ 有现货
$5.25 / 个
查看数据手册 →PIC16LC63A-04I/SO
✅ 直接替换✓ 有现货
$4.2 / 个
查看数据手册 →PIC16LC62A-04I/SO
✅ 直接替换✓ 有现货
$1.74 / 个
查看数据手册 →PIC16LC64AT-04I/PQ 最大额定值与电气特性
| Core Architecture | PIC 8-bit RISC |
| Core Size | 8-bit |
| Series | PIC 16C (PIC16LC64A family) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 x 8 bytes |
| Maximum Clock Speed | 4 MHz |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Number of I/O Pins | 33 |
| Package Type | 44-MQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Peripherals | Brown-out Detect/Reset, PWM, WDT, POR, SSP (SPI/I2C) |
| Instruction Set | 35 single-word instructions |
| Connectivity | I2C, SPI |
PIC16LC64AT-04I/PQ 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 引脚 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| 引脚 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| 引脚 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| 引脚 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| 引脚 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| 引脚 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| 引脚 8 | RE0/RD/AN5 — Port E bit 0 / parallel port read / analog input 5 |
| 引脚 9 | RE1/WR/AN6 — Port E bit 1 / parallel port write / analog input 6 |
| 引脚 10 | RE2/CS/AN7 — Port E bit 2 / parallel port chip select / analog input 7 |
| 引脚 11 | VDD — Positive supply voltage (3.0V-5.5V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| 引脚 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| 引脚 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| 引脚 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| 引脚 17 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| 引脚 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| 引脚 19 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| 引脚 20 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| 引脚 21 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| 引脚 22 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| 引脚 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| 引脚 24 | RC5/SDO — Port C bit 5 / SPI data out |
| 引脚 25 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| 引脚 26 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| 引脚 27 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| 引脚 28 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| 引脚 29 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| 引脚 30 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| 引脚 31 | VSS — Ground reference |
| 引脚 32 | VDD — Positive supply voltage |
| 引脚 33 | RB0/INT — Port B bit 0 / external interrupt |
| 引脚 34 | RB1 — Port B bit 1 |
| 引脚 35 | RB2 — Port B bit 2 |
| 引脚 36 | RB3/PGM — Port B bit 3 / low-voltage programming |
| 引脚 37 | RB4 — Port B bit 4 |
| 引脚 38 | RB5 — Port B bit 5 |
| 引脚 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| 引脚 40 | RB7/PGD — Port B bit 7 / ICSP data |
| 引脚 41 | NC — Not connected (per datasheet) |
| 引脚 42 | NC — Not connected (per datasheet) |
| 引脚 43 | NC — Not connected (per datasheet) |
| 引脚 44 | NC — Not connected (per datasheet) |
典型应用
PIC16LC64AT-04I/PQ 适用于 6 应用s: Industrial Automation Controller, Sensor Interface Module, Low-Power Consumer Appliance, Motor Control Peripheral, Embedded Control Subsystem, HVAC Damper / Valve Controller.
Industrial Automation Controller
The PIC16LC64AT-04I/PQ fits industrial automation controllers thanks to its 4 MHz 8-bit RISC core, 3.5 KB OTP memory, and 33 I/O pins. With industrial-temperature operation (-40C to +85C), Brown-out Reset, and Watchdog Timer, it reliably drives sensor arrays, relay boards, and stepper-motor actuators in factory PLCs. The 3.0V to 5.5V supply range tolerates 24V industrial bus transients when paired with a linear regulator. The 44-MQFP package exposes dedicated PWM and SSP (I2C/SPI) peripherals for closed-loop control, while OTP memory secures firmware in high-volume deployments.
推荐
Sensor Interface Module
The PIC16LC64AT-04I/PQ suits distributed sensor interface modules that read analog/digital sensors and forward data over SPI or I2C. Its 4 MHz deterministic core provides 1 MIPS performance, while 128 bytes RAM buffers small sensor frames. The integrated SSP peripheral reduces external component count for sensor hubs, and the 33 I/O pins accommodate multi-channel sensor matrices. The 3.0V minimum supply aligns with 3.3V sensor rails, simplifying power-tree design.
推荐
Low-Power Consumer Appliance
The PIC16LC64AT-04I/PQ targets low-power consumer appliances where the 3.0V to 5.5V CMOS core operate down to DC, supporting Sleep-mode wake cycles that extend coin-cell battery life. Its 4 MHz RISC engine handles keypad scanning, display multiplexing, and PWM-driven motor control. The 33 I/O drive LED indicators, character LCDs, and buzzer outputs without external logic. OTP flash memory secures final firmware in appliances such as coffee makers, robotic vacuums, and electronic thermostats.
推荐
Motor Control Peripheral
The PIC16LC64AT-04I/PQ drives BLDC and stepper motor control peripherals via its PWM and Capture/Compare modules. With 33 I/O pins and four PWM channels, the MCU generates commutation signals, reads Hall-effect sensors, and modulates motor speed in real time. The 4 MHz instruction rate (1 MIPS) is adequate for trapezoidal commutation at moderate speeds, while the industrial temperature range supports under-hood automotive auxiliary pumps and HVAC damper actuators.
推荐
Embedded Control Subsystem
The PIC16LC64AT-04I/PQ serves as an embedded control subsystem in larger equipment, offloading housekeeping tasks such as fan control, LED driving, button debouncing, and serial bridging. With 3.5 KB OTP, 128 bytes RAM, and I2C/SPI peripherals, the MCU acts as a low-cost slave controller that talks to a host processor. The 44-MQFP footprint allows PCB integration alongside main SoCs without sacrificing board space.
推荐
HVAC Damper / Valve Controller
The PIC16LC64AT-04I/PQ drives HVAC damper and valve actuators that require precise PWM outputs and reliable operation across temperature swings. Its -40C to +85C industrial temperature rating handles rooftop unit environments, while the 44-MQFP package fits compact actuator housings. Integrated Brown-out Reset prevents erratic actuator behavior during brown-out events, and the SSP peripheral connects to climate sensors and host BMS over I2C.
推荐
推荐产品汇总
工程参考数据： PIC16LC64AT-04I/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 | PIC16LC64A-04I/PQ | PIC16LC64AT-04I/L | PIC16LC64AT-04/PT | PIC16LC63A-04I/SO | PIC16LC62A-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (10x10) | 44-MQFP (10x10) | 44-PLCC | 44-TQFP | 28-SOIC | 28-SOIC |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 22 | 22 |
| Supply Voltage | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C (commercial) / -40C to +85C (industrial) | -40C to +85C | -40C to +85C |
| Memory Type | OTP | OTP | OTP | OTP | OTP | OTP |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
关键差异点
- Industrial temperature grade in 44-MQFP （对比 PIC16LC63A-04I/SO)
- Tape-and-reel packaging for high-volume SMT （对比 PIC16LC64A-04I/PQ)
- 44-MQFP form factor with full peripheral access （对比 PIC16LC62A-04I/SO)
设计说明
The PIC16LC64AT-04I/PQ uses One-Time Programmable (OTP) memory that can be written only once. Validate firmware extensively using a windowed ceramic sample or PIC16F equivalent before committing to OTP programming. Once programmed, the part cannot be erased. Misconfigured configuration bits (oscillator selection, watchdog, code protection) can also brick the device; document bit settings in source code comments.
Decouple the VDD/VSS pins with 100 nF ceramic capacitors placed within 5 mm of the package. For noise-sensitive designs, add a 10 uF bulk capacitor near the supply pin. The LC low-voltage variant operates from 3.0V to 5.5V; exceeding 5.5V can permanently damage the OTP cell write circuits. Brown-out Reset must be enabled in configuration bits to prevent code execution at unsafe voltages.
Keep the crystal/oscillator traces short and surround them with a ground guard ring to minimize EMI coupling. The MCLR pin requires a 10 kΩ pull-up to VDD; a 100 nF capacitor from MCLR to VSS improves noise immunity. Place programming header pads (ICSPDAT/ICSPCLK on RB6/RB7) on the PCB even for production boards to allow in-system programming before OTP locking.
合规信息
Lifecycle obsolete per Microchip PIC16C6X family status. RoHS/REACH/lead-free status not stated in verified distributor data; consult Microchip product environmental compliance documents before new designs.
