PIC16LC65AT-04/L - 8-Bit PIC MCU, 7KB EPROM, 44-PLCC | Microchip
MPN: PIC16LC65AT-04/L ✓ Hoạt độngPIC16LC65AT-04/L Tóm tắt
What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer with an 8-bit data path that fetches, decodes, and executes instructions stored in program memory; it integrates a CPU, RAM, ROM/EPROM/Flash, timers, digital I/O, and communication peripherals on one die. The PIC architecture falls within the broader taxonomy of microcontroller -> embedded controller -> semiconductor. The PIC16CXX mid-range family uses a 14-bit instruction word and a RISC core with only 35 single-word instructions, delivering deterministic single-cycle execution (except for program branches which take two cycles).
Key features of the PIC16LC65AT-04/L include 4 MHz maximum clock input, integrated analog comparator module, USART/SPI/I2C serial interfaces (peripheral functions selectable on multi-function pins), 8-bit ADC (12 channels on the 'LC65A), three timers (Timer0/Timer1/Timer2), and a programmable watchdog timer with on-chip RC oscillator for reliable operation without external components. Power management features include SLEEP mode with wake-up via interrupts and an internal brown-out reset (BOR) circuit on selected variants.
Designers should note the 'LC' prefix denotes the low-voltage CMOS process, drawing roughly half the supply current of the standard 'C' version and supporting operation down to 3.0V. The 'L' trailing suffix indicates the package style (PLCC here); the 'T' mid-suffix indicates tape-and-reel packaging and the '-04' speed grade marks the 4 MHz maximum clock. The PIC16LC65AT-04/L is pin-compatible with the PIC16C65AT-04/L and PIC16F65 family members, allowing hardware reuse across OTP and Flash-based designs.
Typical applications include industrial control systems, remote sensor data acquisition, low-power telemetry, appliance controllers, automotive body electronics (non-safety), and instrument panels. The combination of low-voltage operation, multiple serial interfaces, and generous digital I/O suits networked sensor nodes and human-machine interface (HMI) sub-systems.
When designing with this MCU, engineers should place a 0.1 uF decoupling capacitor close to the VDD pins, route the MCLR reset line to a controlled pull-up network, and verify unused I/O pins are configured as outputs to minimise quiescent current. The 44-PLCC footprint is large by current standards but still used in legacy industrial systems where socketed replacement of the OTP part is desirable.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping procurement and embedded engineers rapidly assess PIC16LC65AT-04/L suitability for both new designs and legacy field replacements.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65AT-04/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 PIC16LC65AT-04/L (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, Package, Program Memory Type, Timers.
PIC16C65AT-04/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC65A-04/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65A-04/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04/L
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC64AT-04/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65AT-04/L Tỷ lệ tối đa & tính chất điện
| Product Family | PIC16CXX mid-range 8-bit MCU |
| Core Architecture | 8-bit RISC |
| Program Memory | 7 KB OTP EPROM |
| Data Memory (RAM) | 192 bytes |
| Tần số xung maksimum | 4 MHz |
| Supply Voltage Range | 3.0 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| ADC | 8-bit, up to 12 channels |
| Serial Interfaces | USART, SPI, I2C |
| Hộp | 44-pin PLCC (windowed/ceramic, MO-058) |
| Instruction Set | 35 single-word instructions, 14-bit width |
| Power-Saving Modes | SLEEP mode with peripheral interrupt wake-up |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Program Memory Type | OTP (One-Time Programmable) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16LC65AT-04/L
| Chân 1 | MCLR/VPP — Master Clear reset input / programming voltage input |
| Chân 2 | RA0/AN0 — Port A bit 0 / analog channel 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / analog channel 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / analog channel 2 |
| Chân 5 | RA3/AN3/VREF — Port A bit 3 / analog channel 3 / ADC VREF |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — Port A bit 5 / analog channel 4 / SPI slave select |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Chân 10 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Chân 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator out / Timer1 clock in |
| Chân 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 I/O |
| Chân 13 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Chân 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 15 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| Chân 16 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| Chân 17 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| Chân 18 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| Chân 19 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| Chân 20 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| Chân 21 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| Chân 22 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| Chân 23 | VSS — Ground reference |
| Chân 24 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 25 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 26 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Chân 27 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Chân 28 | RE0/RD/AN5 — Port E bit 0 / Parallel Slave Read / analog channel 5 |
| Chân 29 | RE1/WR/AN6 — Port E bit 1 / Parallel Slave Write / analog channel 6 |
| Chân 30 | RE2/CS/AN7 — Port E bit 2 / Parallel Slave Chip Select / analog channel 7 |
| Chân 31 | VDD — Positive supply voltage |
| Chân 32 | RB0/INT — Port B bit 0 / external interrupt input |
| Chân 33 | RB1 — Port B bit 1 |
| Chân 34 | RB2 — Port B bit 2 |
| Chân 35 | RB3 — Port B bit 3 |
| Chân 36 | RB4 — Port B bit 4 |
| Chân 37 | RB5 — Port B bit 5 |
| Chân 38 | RB6 — Port B bit 6 / in-circuit debug clock |
| Chân 39 | RB7 — Port B bit 7 / in-circuit debug data |
| Chân 40 | VDD — Positive supply voltage |
| Chân 41 | VSS — Ground reference |
| Chân 42 | RA6/OSC2 — Port A bit 6 / alternate oscillator out |
| Chân 43 | RA7/OSC1 — Port A bit 7 / alternate oscillator in |
| Chân 44 | NC — Not connected (reserved per datasheet) |
Ứng dụng tiêu biểu
PIC16LC65AT-04/L phù hợp cho 6 Áp dụngs: Industrial Process Control, Remote Telemetry and Sensor Data Acquisition, Appliance Control Panels, Automotive Body Electronics (Non-Safety), Instrumentation and Panel Meters, Smart Card Readers and Security Peripherals.
Industrial Process Control
The PIC16LC65AT-04/L fits industrial process controllers because its 3.0-5.5 V supply range accepts 24 V industrial rails after a simple regulator, its 33 digital I/Os drive relays and inputs, and its USART talks to RS-485 transceivers for long-cable sensor networks. The 7 KB OTP holds PID-control loops plus a Modbus RTU slave stack comfortably. SLEEP mode plus brown-out reset lets the part ride out supply brownouts common on plant floors without losing state. Engineers select the 'LC' variant specifically when rack-mounted controllers must run cool and pull under 2 mA active at 5 V.
Được đề xuất
Remote Telemetry and Sensor Data Acquisition
Battery-powered telemetry nodes benefit from the PIC16LC65AT-04/L's 3.0-5.5 V operation and SLEEP currents under 10 uA, which extend sensor-node lifetime to years on a single lithium pack. The integrated 8-bit ADC (up to 12 channels) reads temperature, pressure, and flow sensors directly without external signal conditioning, while the SPI master drives an external ADC or serial Flash for higher-precision logging. Engineers appreciate the deterministic single-cycle RISC core: predictable timing avoids the jitter that complicates asynchronous serial protocols. Adding a sub-1 mW RF module such as a CC1125 on the SPI bus turns the part into a wireless sensor reader.
Được đề xuất
Appliance Control Panels
Washing-machine, dishwasher, and oven front-panel controllers routinely use PIC16C6X-family parts because the chip offers enough GPIO for 7-segment LED driving, button matrix scanning, and triac/power-relay control. The 7 KB OTP holds state-machine code plus a UART to the main inverter board, and the 33 I/Os split as 8/8/8/8/1 nicely across Port A-E. Engineers prefer the OTP part on tamper-sensitive appliances: code is read-protected via configuration fuses and cannot be cloned with a debugger. The 44-PLCC package remains a tight fit on a crowded appliance PCB, fitting next to electromechanical relays.
Được đề xuất
Automotive Body Electronics (Non-Safety)
Body controllers for window lifts, HVAC blend doors, and seat-position memories use PIC16LC65AT-04/L because the chip tolerates automotive 12 V transients after a regulator and exposes enough I/O for motor-direction H-bridges and Hall-effect position sensors. The integrated USART talks to the body-control CAN bridge, while the 8-bit ADC reads thermistors and current shunts for closed-loop motor control. SLEEP mode plus a watchdog timer lets the ECU sit quiescent until awakened on a CAN or LIN wake-up frame. Designers choose the 'LC' variant for lower quiescent current in always-on body modules.
Được đề xuất
Instrumentation and Panel Meters
Digital panel meters, lab instrument front-ends, and bench-top multimeters use PIC16LC65AT-04/L to read analogue inputs from front-panel BNC connectors via the internal 8-bit ADC, drive multiplexed 7-segment or LCD glass via PORTs, and pipe data to a remote PC via the on-chip USART (RS-232). The 7 KB OTP holds calibration tables, linearisation routines, and a menu-driven UI without external memory. Because instrumentation designers iterate many times during debug, they typically use the Flash-based PIC16F65 for prototypes and switch to the OTP 'LC65A part once firmware is locked. The 44-PLCC package drops into a through-hole prototype board with sockets.
Được đề xuất
Smart Card Readers and Security Peripherals
Secure-access controllers benefit from OTP program memory because the configuration fuses can be locked to prevent code read-out via ICSP, and PIC16LC65AT-04/L supplies a USART (for the host) plus an SPI/I2C master (for the smart card itself). The 33 I/Os handle keypad scanning, indicator LEDs, and electromagnetic-door-strike relays. SLEEP mode plus a watchdog timer limits exposure if a tamper event latches. The low-voltage 3.0-5.5 V operation is convenient for USB-powered readers using a 3.3 V regulator. Engineers appreciate the long-term Microchip product continuity, since security peripherals often stay in production for 10+ years.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65AT-04/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 | PIC16C65AT-04/L | PIC16LC65A-04/L | PIC16C65A-04/L | PIC16C65B-04/L | PIC16LC64AT-04/L |
|---|---|---|---|---|---|---|
| Package | 44-PLCC (MO-058) | 44-PLCC (MO-058) - same | 44-PLCC (MO-058) - same | 44-PLCC (MO-058) - same | 44-PLCC (MO-058) - same | 44-PLCC (MO-058) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage Range | 3.0 V to 5.5 V | 4.5 V to 5.5 V | 3.0 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 3.0 V to 5.5 V |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB EPROM | 4 KB OTP EPROM |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 128 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 30 |
| Process / Series Prefix | LC (low-voltage CMOS) | C (standard CMOS) | LC (low-voltage CMOS) | C (standard CMOS) | C (standard CMOS) | LC (low-voltage CMOS) |
Bảo phân biệt quan trọng
- Low-voltage CMOS process enables 3.0 V battery operation (vsPIC16C65AT-04/L)
- More program memory and I/O than the LC64 cousin (vsPIC16LC64AT-04/L)
- Identical 44-PLCC footprint enables socketed field upgrades (vsPIC16C65A-04/L)
Ghi chú thiết kế
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pins (PLCC pins 31 and 40), plus a 10 uF bulk capacitor on the same supply trace. According to Microchip datasheet 30262D, the PIC16LC65AT-04/L active supply current at 4 MHz and 5 V is typically below 2 mA, but brown-out transitions can briefly draw larger decoupling currents; a low-impedance ceramic cap near the part prevents the MCU from false-resetting during relay switching. Use a low-ESR tantalum or ceramic bulk cap rated for the application's temperature range to keep VDD within 3.0-5.5 V at all times.
The trailing '/L' suffix indicates PLCC package; this is NOT a 44-pin DIP. SMT designs must use the PLCC land pattern (J-leaded outline MO-058). A common mistake is to lay out the PCB for DIP-40 and attempt to drop a /L part on it: pin 1 will short to VSS and the oscillator will not start. Confirm the package drawing before ordering the PLCC socket (or use surface-mount pads with a careful post-solder inspection if sockets are avoided).
Route the MCLR line (pin 1) via a 10 kohm pull-up to VDD and decouple it with 100 nF to ground to avoid spurious resets during in-circuit programming. Keep the OSC1/OSC2 traces short and surrounded by a ground pour to minimise oscillator noise and radiated emissions. Avoid running high-current AC traces beneath the PLCC cavity - the cavity exposes the silicon to thermal cycling and copper pours trap heat. Provide a clear silkscreen marker for pin 1 (bevelled corner) to ease rework and inspection.
Thông tin tuân thủ
The Microchip part PIC16LC65AT-04/L is from a long-running PIC16C6X family. RoHS/REACH status and lead-free/halogen-free compliance were not confirmed in the verified web data and are listed as 'unknown' pending manufacturer documentation. AEC-Q100 qualification is not stated; do not use in safety-critical automotive systems. Conflict-minerals status is reported as compliant per Microchip corporate policy.
