PIC16LC64A-04I/L - 4MHz 8-Bit MCU 3.5KB OTP 44-PLCC | Microchip
MPN: PIC16LC64A-04I/L ✗ Cuối đờiPIC16LC64A-04I/L Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that contains a CPU, program memory, data RAM, and programmable I/O peripherals. The PIC16LC64A belongs to the product-type hierarchy MCU -> microcontroller -> 8-bit microcontroller -> embedded controller -> semiconductor. Its RISC instruction set uses only 35 single-word instructions with most executing in a single instruction cycle, providing deterministic timing for control loops. The wide operating voltage range allows operation directly from a 3.3V or 5V rail, and the low-power consumption (5 mA typical active at 5V/4 MHz) makes the part suitable for battery-backed or energy-conscious designs.
The PIC16LC64A features a Harvard architecture with separate 14-bit program and 8-bit data buses, a 13-bit program counter capable of addressing 8K x 14 words of program memory, an 8-level hardware stack, and an integrated watchdog timer. Its built-in peripherals in this 'LC' low-power CMOS variant include timers, an analog comparator, and synchronous serial port (SSP) capability (SPI / I2C master mode). With internal RC oscillator support and power-on reset, the device can boot and run with a minimum of external components.
The 44-pin PLCC (J-Lead) package provides through-hole-compatible socket assembly while still being surface-mountable on the PCB, easing prototyping and field replacement. Although the OTP ('C') program-memory version is one-time programmable, it is widely used in low-to-mid volume commercial and industrial products where code lock-in is acceptable and tooling cost for masked-ROM parts is not justified. The 'I' industrial temperature grade and 'L' PLCC package suffix are key ordering codes.
Typical applications include general-purpose embedded control (appliances, HVAC, instrumentation), human-machine interface front panels, motor-driver sequencers, sensor-signal processing front-ends, RS-232/RS-485 protocol converters, and battery-powered industrial sensors. Its 33 I/O pins allow direct drive of keypads, LED arrays, and small graphic LCDs without external expanders.
When designing with PIC16LC64A-04I/L, ensure that the in-circuit serial programming (ICSP) header is accessible because OTP programming must occur after PCB assembly. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the supply pin, and reserve a MCLR pull-up to VDD through 10 kohm if in-circuit programming is required.
This page synthesizes current distributor stock, drop-in PIC16LC6X alternatives, and practical design notes that complement the Microchip datasheet and device errata for legacy PIC16C6X designs.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC64A-04I/L — 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 PIC16LC64A-04I/L (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, Program Memory Size, RAM Size, Core Architecture.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếPIC16LC64A-04I/L Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC |
| Core Size | 8-Bit |
| Family | PIC16CXX (PIC16LC64A) |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 128 bytes |
| Number of I/O | 33 |
| Max CPU Speed | 4 MHz |
| Operating Voltage | 2.5 V to 6.0 V |
| Oscillator Type | External (Crystal/RC) |
| Peripherals | Watchdog Timer, Brown-out Detect (variant dependent), SSP/SPI, Timer0/1/2, Analog Comparator |
| Connectivity | SSP (SPI / I2C master) |
| Program Memory Type | OTP EPROM |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 44-PLCC (J-Lead, 16.59x16.59 mm) |
| Kiểu lắp đặt | Surface Mount |
| Instruction Set | 35 single-word instructions, mostly single-cycle |
Cấu hình chân PIC16LC64A-04I/L
| Chân 1 | MCLR/VPP — Master Clear (Reset) input / ICSP 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/VREF- — Port A bit 2 / Analog input 2 / ADC reference negative |
| Chân 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC reference positive |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 7 | RA5/SS/AN4 — Port A bit 5 / SPI slave select / Analog input 4 |
| Chân 8 | RE0/RD/AN5 — Port E bit 0 / Parallel read / Analog input 5 |
| Chân 9 | RE1/WR/AN6 — Port E bit 1 / Parallel write / Analog input 6 |
| Chân 10 | RE2/CS/AN7 — Port E bit 2 / Parallel chip select / Analog input 7 |
| Chân 11 | VDD — Positive supply voltage (2.5 V to 6.0 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Chân 14 | OSC2/CLKOUT — Crystal oscillator output / clock out (RC mode) |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator out / Timer1 clock in |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 |
| Chân 17 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SPI SCK / I2C SCL |
| 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 — Port C bit 6 |
| Chân 26 | RC7 — Port C bit 7 |
| 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 (second VSS) |
| Chân 32 | VDD — Positive supply (second VDD) |
| 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 — Port B bit 3 |
| 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
PIC16LC64A-04I/L phù hợp cho 7 Áp dụngs: Industrial Sensor Interface and Data Acquisition, HVAC Control Board and Thermostat Front End, Appliance Control Board (Washing Machine / Dishwasher Front Panel), Battery-Powered Industrial Sensor / Wireless Node MCU, Automotive Aftermarket Accessory Controller (Non-Safety), RS-232 / RS-485 Protocol Converter Bridge, Small Graphic LCD and Keypad User Interface Panel.
Industrial Sensor Interface and Data Acquisition
The PIC16LC64A-04I/L's 33 digital I/O and 8-channel ADC (in ROM-mask variants) make it a strong fit for industrial sensor interfaces. With 3.5 KB OTP and 128-byte RAM, the device can sample 4-20 mA loop signals, debounce mechanical switches, format ASCII strings for RS-232, and drive indicator LEDs. The 2.5-6.0 V supply tolerance accepts raw 5 V (post-regulation) or 3.3 V rails common in factory automation backplanes, while -40 C to +85 C ensures the unit survives cabinet-temperature swings.
Được đề xuất
HVAC Control Board and Thermostat Front End
In HVAC controllers the PIC16LC64A-04I/L scans a keypad matrix, drives a 7-segment or 16x2 character LCD, and runs a PID loop on temperature sensor inputs. Its 33 I/O easily expand to drive triac optocouplers that switch 24 VAC loads (fan relays, compressor contactors), while the SSP module reads an SPI temperature/humidity sensor. The wide supply range lets the same firmware support both 5 V logic and 3.3 V LCD modules without BOM changes.
Được đề xuất
Appliance Control Board (Washing Machine / Dishwasher Front Panel)
White-goods control boards rely on the PIC16LC64A-04I/L for cycle sequencing, motor-driver handshake, and user-interface handling. Its 35 single-word RISC instructions keep firmware footprint within the 3.5 KB OTP envelope, while the 33 I/O drive seven-segment LEDs, scan rotary encoders, and read water-level / door-switch sensors. Industrial-temperature grade (-40 C to +85 C) tolerates motor-housing heat, and the 44-PLCC sockets allow rapid assembly-line rework.
Được đề xuất
Battery-Powered Industrial Sensor / Wireless Node MCU
The PIC16LC64A's 'LC' low-power CMOS implementation draws only 5 mA typical active at 5 V / 4 MHz and falls to microamp sleep currents, making it well-suited to battery or solar-powered wireless sensor nodes. Combined with an SPI radio module (e.g., MRF24J40) it forms a periodic-telemetry node reporting temperature or level readings to a gateway. The 33 I/O accommodate multiple sensor channels and a status LED without external mux.
Được đề xuất
Automotive Aftermarket Accessory Controller (Non-Safety)
Although not AEC-Q100 qualified, the PIC16LC64A-04I/L (industrial -40 C to +85 C) is often used in non-safety automotive aftermarket accessories such as alarm keypads, lighting controllers, and auxiliary display panels. Its SSP module interfaces to SPI-driven LED drivers and CAN-transceiver ICs, while the 33 I/O manage relays, keyfob decoders, and buzzer PWM. Designers should add external transient protection (TVS diodes) and Watchdog Timer for unattended operation.
Được đề xuất
RS-232 / RS-485 Protocol Converter Bridge
The PIC16LC64A-04I/L's integrated SSP module and a software UART bit-banged on standard I/O make it a low-cost bridge for protocol conversion between RS-232 (PC COM port) and RS-485 (industrial fieldbus). Two hardware USARTs are not present, but 3.5 KB OTP comfortably holds the conversion tables and small protocol stack. The 44-PLCC socket assembly allows quick replacement during field service calls.
Được đề xuất
Small Graphic LCD and Keypad User Interface Panel
With 33 I/O the PIC16LC64A-04I/L directly drives a 64x128 or 128x64 graphic LCD module over SPI through the SSP peripheral, while scanning a 4x4 matrix keypad using a single analog input via voltage-divider trick. The 128-byte RAM holds a small display buffer and the 3.5 KB OTP holds character-set tables and menu logic. The 44-PLCC package is one of the few that gives the I/O budget for this combo at the PIC16C6X price point.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC64A-04I/L — 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 | PIC16LC63A-04I/SS | PIC16LC64A-04I/PQ |
|---|---|---|---|
| Package | 44-PLCC (J-Lead, 16.59x16.59 mm) | 28-SSOP - DIFFERENT PACKAGE | 44-MQFP - DIFFERENT PACKAGE |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP (2K x 14) | 3.5 KB OTP (2K x 14) | 3.5 KB OTP (2K x 14) |
| Core / Speed | 8-bit PIC / 4 MHz | 8-bit PIC / 4 MHz | 8-bit PIC / 4 MHz |
| I/O Count | 33 | 22 | 33 |
| RAM Size | 128 bytes | 128 bytes | 128 bytes |
| Operating Voltage | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V |
| Temperature Grade | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Commercial (0 C to +70 C) |
| Pin Compatibility (drop-in) | n/a (reference part) | NOT pin-compatible (different package) | NOT pin-compatible (MQFP vs PLCC) |
Bảo phân biệt quan trọng
- 44-PLCC socket compatibility for easy field service (vsPIC16LC63A-04I/SS)
- Industrial temperature grade vs Commercial grade at same die (vsPIC16LC64A-04I/PQ)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of pins 11 and 12 (VDD/VSS pair), and add a 10 uF bulk capacitor near the socket for the ICSP programming pulse transients. Keep the ICSP header (RB6/RB7 and MCLR) accessible at PCB edge so the OTP can be programmed after assembly.
Estimated: PIC16LC64A active current at 4 MHz / 5 V with all I/O unloaded is approximately 5 mA typical. The OTP memory is one-time programmable - any code bug requires a chip swap, so reserve a programming-test socket on the production line. Make sure CONFIG bits (WDT, oscillator, code-protect) are set before programming the user code, not after, because once code-protect is enabled it cannot be cleared on OTP.
The PIC16LC64A 'LC' variant supports a sleep mode drawing <1 uA typical (WDT disabled), making it suitable for battery-backed designs. Use Brown-Out Reset (BOR) enabled config bit to avoid corrupted registers during supply dips below 2.5 V; the BOR trip voltage is hardware-fixed at approximately 4 V for the 5 V mode.
Thông tin tuân thủ
PIC16LC64A-04I/L is Obsolete per Microchip product lifecycle. Not AEC-Q100 qualified - industrial temperature grade only. RoHS/lead-free status for the PLCC /L variant not explicitly stated in the provided distributor data and is flagged [DATA_NEEDED].
