PIC16LC64AT-04/PT - 8-bit PIC MCU, 3.5KB OTP, 4MHz | Microchip
MPN: PIC16LC64AT-04/PT ✗ Cuối đờiPIC16LC64AT-04/PT Tóm tắt
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates a CPU, non-volatile program memory (ROM/EPROM/Flash), peripherals (timers, A/D, communication) and I/O onto a single die. Within the broader taxonomy, an MCU is a subset of microprocessors (MPU) and is itself a type of embedded controller in the semiconductor hierarchy: microcontroller -> embedded processor -> IC. PIC16-series parts use Microchip's enhanced Harvard RISC architecture, with separate program and data buses allowing simultaneous instruction fetch and operand access.
Key features include 33 digital I/O lines, a fully static design that allows the clock to be stopped without losing state, low-power CMOS process technology, and compatibility with the PIC16C6X family instruction set. The 4 MHz maximum clock and 14-bit instruction word are characteristic of mid-1990s PIC16 mid-range devices, optimized for deterministic interrupt response and low power rather than raw compute throughput. Internal peripherals documented in the PIC16CXX family datasheet include timers, capture/compare/PWM modules, an analog comparator, and synchronous/asynchronous serial ports.
Typical applications include industrial control systems, automotive body electronics (within the extended temperature range), appliance control, sensor interface front-ends, and legacy embedded products requiring long-life-cycle 8-bit controllers. The wide operating voltage window (3.0 V to 6.0 V) also supports battery-backed designs and unregulated supply rails common in white-goods and HVAC equipment.
When designing with this MCU, verify that code-size requirements fit within the 2K x 14 program memory and that the 33 I/O pins plus any oscillator/master-clear pins match the application's PCB layout. OTP (one-time programmable) devices cannot be re-programmed, so secure code images must be locked into the part at the programming house.
This page synthesizes verified distributor pricing, drop-in alternative listings, and engineering design notes not aggregated on the manufacturer datasheet, helping engineers and procurement teams evaluate the PIC16LC64AT-04/PT against legacy PIC16C6X family members and modern PIC16F successors.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC64AT-04/PT — 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-04/PT (cùng hình factor và footprint) — khác nhau ở Package, RAM Size, Program Memory Size, Operating Temperature, Instruction Set.
PIC16C64A-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F917-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F914-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC64A-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04/PT Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Size | 3.5 KB (2K x 14) |
| Program Memory Type | OTP EPROM |
| RAM Size | 128 x 8 (128 bytes) |
| EEPROM Size | None |
| Number of I/O | 33 |
| Speed | 4 MHz |
| Oscillator Type | External |
| Supply Voltage Range | 3.0 V to 6.0 V |
| Hộp / Vỏ | 44-LCC (J-Lead) / 44-TQFP |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | 0C to +70C (Commercial) |
| Packaging | Tape & Reel (TR) |
| Architecture | RISC, Harvard, Fully Static |
| Instruction Set | PIC16C6X family compatible |
Cấu hình chân PIC16LC64AT-04/PT
| Chân 1 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| Chân 5 | RA4/T0CKI — PORTA bit 4 / Timer 0 clock input |
| Chân 6 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / Slave select |
| Chân 7 | RA6/OSC2/CLKOUT — PORTA bit 6 / Oscillator output / Clock out |
| Chân 8 | RA7/OSC1/CLKIN — PORTA bit 7 / Oscillator input / Clock in |
| Chân 9 | MCLR/VPP — Master clear reset / Programming voltage |
| Chân 10 | VDD — Positive supply voltage |
| Chân 11 | VSS — Ground reference |
| Chân 12 | VDD — Positive supply voltage |
| Chân 13 | OSC2/CLKOUT — Oscillator crystal output / Clock out |
| Chân 14 | OSC1/CLKIN — Oscillator crystal input / Clock in |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock |
| Chân 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 19 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 20 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 21 | RC6/TX/CK — PORTC bit 6 / UART transmit / clock |
| Chân 22 | RC7/RX/DT — PORTC bit 7 / UART receive / data |
| Chân 23 | VSS — Ground reference |
| Chân 24 | VDD — Positive supply voltage |
| Chân 25 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 26 | RB1 — PORTB bit 1 |
| Chân 27 | RB2 — PORTB bit 2 |
| Chân 28 | RB3 — PORTB bit 3 |
| Chân 29 | RB4 — PORTB bit 4 |
| Chân 30 | RB5 — PORTB bit 5 |
| Chân 31 | RB6 — PORTB bit 6 |
| Chân 32 | RB7 — PORTB bit 7 |
| Chân 33 | VSS — Ground reference |
| Chân 34 | VDD — Positive supply voltage |
| Chân 35 | RD0 — PORTD bit 0 |
| Chân 36 | RD1 — PORTD bit 1 |
| Chân 37 | RD2 — PORTD bit 2 |
| Chân 38 | RD3 — PORTD bit 3 |
| Chân 39 | RD4 — PORTD bit 4 |
| Chân 40 | RD5 — PORTD bit 5 |
| Chân 41 | RD6 — PORTD bit 6 |
| Chân 42 | RD7 — PORTD bit 7 |
| Chân 43 | RE0/AN5 — PORTE bit 0 / Analog input 5 |
| Chân 44 | RE1/AN6 — PORTE bit 1 / Analog input 6 |
Ứng dụng tiêu biểu
PIC16LC64AT-04/PT phù hợp cho 7 Áp dụngs: Industrial Control Systems, Appliance Control (White Goods), Sensor Interface Front-Ends, Automotive Body Electronics, HVAC Climate Control, Legacy Embedded Product Maintenance, Remote Control and Keypad Systems.
Industrial Control Systems
The PIC16LC64AT-04/PT fits industrial control systems through its 33 I/O pins, 3.0-6.0 V wide supply range, and deterministic PIC RISC interrupt architecture. The 4 MHz clock yields a 1 microsecond instruction cycle, sufficient for PLC-style scan loops driving relays at < 1 ms response. The Commercial 0-3.5KB OTP memory holds ladder-logic replacement firmware and small state machines. Designers place the part on a 5 V or 24 V-derived 5 V rail and use the 33 I/O for opto-isolated inputs and relay/solenoid drivers.
Được đề xuất
Appliance Control (White Goods)
The PIC16LC64AT-04/PT is well-suited to appliance controllers in washing machines, dishwashers, and HVAC units because of its wide 3.0-6.0 V supply tolerance and CMOS low-power design. The 33 I/O drive 7-segment displays, keypad matrices, and triac-fired motor/valve controls. The 4 MHz clock handles keypad debounce, sensor sampling, and triac zero-crossing timing. The fully-static core allows the clock to be halted in standby, reducing idle current for Energy Star compliance.
Được đề xuất
Sensor Interface Front-Ends
In sensor interface front-ends, the PIC16LC64AT-04/PT acts as a low-power MCU that reads analog/digital sensors, applies linearization, and drives an RS-232/RS-485 uplink. The 33 I/O connect to multiple sensor channels (temperature, pressure, flow) while the PIC RISC core runs calibration routines and serial protocol stacks. The 4 MHz clock supports 9600-19200 baud UART, and the 3.0 V minimum supply supports 3.3 V sensor rails common in IoT-bridge designs.
Được đề xuất
Automotive Body Electronics
Within automotive body electronics (cabin controllers, lighting, door modules), the PIC16LC64AT-04/PT in the Industrial or Extended temperature variant provides a 4 MHz 8-bit controller tolerant of automotive 12 V-derived rails. The 33 I/O drive LED arrays, switch inputs, and LIN/CAN-friendly bit-banged interfaces. The OTP memory holds fixed lighting patterns. For new designs, migrate to AEC-Q100-qualified PIC16F1xx or dsPIC33 family parts in the same 44-pin TQFP footprint.
Được đề xuất
HVAC Climate Control
The PIC16LC64AT-04/PT fits HVAC climate controllers because of its wide supply tolerance, deterministic interrupt response, and 33 I/O for driving triacs, reading NTC thermistors, and visual flow indicators. The 4 MHz clock handles PID loops for damper and compressor control with sub-millisecond updates. The OTP memory holds factory-calibrated temperature tables; the LC process variant minimizes standby current during off-season storage. Migration to PIC16F917-I/PT or PIC16F914-I/PT enables field firmware updates.
Được đề xuất
Legacy Embedded Product Maintenance
The PIC16LC64AT-04/PT is a primary candidate for sustaining legacy embedded products where the firmware is locked to OTP and the PCB cannot be redesigned. The 44-pin TQFP, 3.5 KB OTP, and 33 I/O exactly replicate PIC16C6X-family board designs already in the field. The Commercial temperature range covers indoor legacy industrial and consumer installations. Use remaining distributor stock for service replacement; for new designs, choose flash-based PIC16F successors with the same 44-pin TQFP footprint.
Được đề xuất
Remote Control and Keypad Systems
The PIC16LC64AT-04/PT is suitable for keypad and remote control systems because its 33 I/O scan 4x4 to 5x5 keypad matrices with diode isolation, while the 4 MHz PIC RISC core debounces contact bounce and handles IR encoding for remote-control transmitters. The 3.0 V minimum supports 2-3 cell battery-powered remotes, and the CMOS LC variant minimizes quiescent drain to extend battery life. Migration to flash parts (PIC16F914-I/PT) supports field firmware updates via the IR link.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC64AT-04/PT — 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 | PIC16C64A-04/PT | PIC16F917-I/PT | PIC16F914-I/PT | PIC16LC64AT-04I/PT | PIC16LC64A-04I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) | 44-TQFP (PT) | 44-TQFP (PT) | 44-TQFP (PT) | 44-TQFP (PT) | 44-TQFP (PT) |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 14 KB Flash | 7 KB Flash | 3.5 KB OTP | 3.5 KB OTP |
| Max Clock Speed | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz |
| RAM Size | 128 bytes | 128 bytes | 352 bytes | 256 bytes | 128 bytes | 128 bytes |
| Memory Type | OTP EPROM | OTP EPROM | Flash | Flash | OTP EPROM | OTP EPROM |
| Temperature Range | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Number of I/O | 33 | 33 | 36 | 36 | 33 | 33 |
Bảo phân biệt quan trọng
- Wide 3.0-6.0 V supply tolerance supports unregulated 5 V and battery-backed rails (vsPIC16F914-I/PT)
- Fully-static CMOS design allows clock gating for ultra-low standby current (vsPIC16C64A-04/PT)
- Pin-compatible with flash-based PIC16F917-I/PT for modern migration path (vsPIC16F917-I/PT)
Ghi chú thiết kế
The PIC16LC64AT-04/PT operates from 3.0 V to 6.0 V with typical active current of 2-5 mA at 4 MHz. Estimated: at VDD=5V, 4 MHz, IO load = 33x sourcing 10 mA worst-case, total current remains well under 50 mA. Add a 100 nF decoupling capacitor within 5 mm of each VDD pin (multiple VDD pins are present on the 44-TQFP) and a 10 uF bulk capacitor at the regulator output. For battery-backed designs, route MCLR through a 10 kohm pull-up to retain the reset state during brownout.
Because PIC16LC64AT-04/PT is OTP (one-time programmable), all firmware must be code-complete before programming. Engineers iterating on code should use the PIC16C64A-04/JW windowed ceramic package during development, then commit the final hex image to the OTP/PT part. A common pitfall is attempting field firmware updates on the LC64A-T - the OTP memory cannot be erased, so any code bug becomes a board-scrapping event in production.
Route the 44-TQFP land pattern per IPC-7351 with 0.4 mm pitch and an exposed center pad if applicable. Place a ground pour under the part to reduce EMI, and keep the OSC1/OSC2 traces short (< 10 mm) to avoid clock distortion. Use a 4-layer stackup with a dedicated ground plane for designs that drive noisy loads (triacs, relays); a 2-layer stackup is acceptable for low-speed sensor interfaces. MCLR trace must not run parallel to switching nodes for > 5 mm to prevent spurious resets.
Estimated: at 5 V supply, 4 MHz clock, and typical 33 I/O sourcing 5 mA each, the PIC16LC64AT-04/PT dissipates approximately 0.1-0.2 W. The 44-TQFP package thermal resistance (theta_JA) is roughly 50 C/W, giving a junction temperature rise of 5-10 C above ambient. No heatsink is required, but verify against the worst-case ambient (typically 70 C max for Commercial grade) to ensure T junction stays below 100 C.
Thông tin tuân thủ
RoHS and REACH compliance not explicitly confirmed in retrieved data; lead-free per Microchip product family datasheet convention for OTP parts shipped in tape-and-reel. Not AEC-Q100 qualified - this is a commercial-grade part. For automotive, choose Industrial (I) or Extended (E) temperature variants or migrate to AEC-Q100-qualified dsPIC33 parts.
