PIC16LC64AT-04I/PQ - 8-Bit PIC MCU, 4MHz, 3.5KB OTP, 44-MQFP
MPN: PIC16LC64AT-04I/PQ ✗ Cuối đờiPIC16LC64AT-04I/PQ Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC64AT-04I/PQ — 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 PIC16LC64AT-04I/PQ (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Program Memory Type, RAM Size, Instruction Set.
PIC16LC64A-04I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC63A-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC62A-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04I/PQ Tỷ lệ tối đa & tính chất điện
| 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) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Peripherals | Brown-out Detect/Reset, PWM, WDT, POR, SSP (SPI/I2C) |
| Instruction Set | 35 single-word instructions |
| Connectivity | I2C, SPI |
Cấu hình chân PIC16LC64AT-04I/PQ
| 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 / parallel port read / analog input 5 |
| Chân 9 | RE1/WR/AN6 — Port E bit 1 / parallel port write / analog input 6 |
| Chân 10 | RE2/CS/AN7 — Port E bit 2 / parallel port chip select / analog input 7 |
| Chân 11 | VDD — Positive supply voltage (3.0V-5.5V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| Chân 17 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Chân 20 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Chân 21 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Chân 22 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Chân 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Chân 27 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Chân 28 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Chân 29 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Chân 30 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 34 | RB1 — Port B bit 1 |
| Chân 35 | RB2 — Port B bit 2 |
| Chân 36 | RB3/PGM — Port B bit 3 / low-voltage programming |
| Chân 37 | RB4 — Port B bit 4 |
| Chân 38 | RB5 — Port B bit 5 |
| Chân 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC64AT-04I/PQ phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC64AT-04I/PQ — 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 | 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 |
Bảo phân biệt quan trọng
- Industrial temperature grade in 44-MQFP (vsPIC16LC63A-04I/SO)
- Tape-and-reel packaging for high-volume SMT (vsPIC16LC64A-04I/PQ)
- 44-MQFP form factor with full peripheral access (vsPIC16LC62A-04I/SO)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
