PIC16LC65A-04I/P - 8-Bit MCU, 7KB OTP, 4MHz, 40-PDIP | Microchip
MPN: PIC16LC65A-04I/P ✓ Hoạt độngPIC16LC65A-04I/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripheral I/O. Within the broader hierarchy, MCUs sit under microcontrollers -> embedded processors -> semiconductors. The PIC16C family specifically refers to Microchip's OTP-programmed mid-range 8-bit cores that use a Harvard architecture with separate program and data buses, 14-bit wide instruction words, and a RISC-style instruction set of 35 single-word instructions - most executed in a single instruction cycle except program branches (two cycles). These architectural choices minimise external component count while delivering deterministic real-time response.
Key differentiating features include the Harvard bus architecture with 14-bit instructions, five 8-bit digital I/O ports, a synchronous serial port (SSP) supporting SPI and I2C, a USART, an 8-bit timer/counter with prescaler, dual analog comparators, capture/compare/PWM modules, and a programmable brown-out reset. The /I suffix denotes industrial temperature grade and the /P suffix denotes the PDIP-40 plastic DIP package, both confirmed by Microchip part-numbering conventions.
Typical applications include industrial control and automation, sensor interfacing, low-power embedded controllers, legacy peripheral replacement, and consumer white-goods logic where OTP programmability and the broad toolchain support of MPLAB IDE reduce time-to-market. The /I industrial temperature grade also suits factory-floor and outdoor enclosures not exposed to extended thermal excursions.
When designing with this device, ensure that the chosen 3V-5.5V LDO or switching regulator supplies clean rail voltage with adequate decoupling (typically 100 nF plus 10 uF bulk) near the VDD pins. For new designs prefer a flash-based PIC16F equivalent (same pinout, in-system programmable) unless OTP and one-time cost-per-unit optimisation are explicit requirements of the BOM. The OTP memory cannot be erased, so firmware revision requires a physical part replacement.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65A-04I/P — 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 PIC16LC65A-04I/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, Program Memory Size, ADC.
PIC16C65B-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF74-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F874A-I/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F74A-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC65A-04I/P Tỷ lệ tối đa & tính chất điện
| Core | PIC16C 8-bit RISC |
| Program Memory | 7 KB (4K x 14) OTP |
| Data RAM | 192 bytes |
| Data EEPROM | Not present (OTP family) |
| Maximum Clock Speed | 4 MHz (04 speed grade) |
| Supply Voltage (VDD) | 3 V to 5.5 V |
| Digital I/O Pins | 33 |
| Timers | Timer0 8-bit, Timer1 16-bit, Timer2 8-bit |
| Analog Comparators | 2 |
| Communication Interfaces | USART, SSP (SPI / I2C) |
| Capture/Compare/PWM | Yes (CCP module) |
| Brown-out Reset | Yes (programmable) |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Nhiệt độ hoạt động | -40C to +85C (industrial, /I grade) |
| Hộp | 40-pin PDIP (Plastic DIP, 0.600 in) |
| Kiểu lắp đặt | Through-Hole |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LC65A-04I/P
| Chân 1 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 2 | OSC2/CLKOUT — Crystal oscillator output / clock output (Fosc/4) |
| Chân 3 | MCLR/VPP — Master clear reset input / programming voltage input |
| Chân 4 | RA0/AN0 — PORTA bit 0 / analog comparator input 0 |
| Chân 5 | RA1/AN1 — PORTA bit 1 / analog comparator input 1 |
| Chân 6 | RA2/AN2 — PORTA bit 2 / analog comparator input 2 |
| Chân 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / voltage reference |
| Chân 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 9 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / analog input 4 |
| Chân 10 | RE0/RD/AN5 — PORTE bit 0 / parallel-port read control / analog input 5 |
| Chân 11 | RE1/WR/AN6 — PORTE bit 1 / parallel-port write control / analog input 6 |
| Chân 12 | RE2/CS/AN7 — PORTE bit 2 / parallel-port chip select / analog input 7 |
| Chân 13 | VSS — Ground reference |
| Chân 14 | VDD — Positive supply voltage (3V-5.5V) |
| Chân 15 | OSC1 — (dual oscillator pin reserved - see datasheet) |
| Chân 16 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 17 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Chân 18 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| Chân 19 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 20 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 21 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 22 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Chân 23 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Chân 24 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 25 | RB1 — PORTB bit 1 |
| Chân 26 | RB2 — PORTB bit 2 |
| Chân 27 | RB3/PGM — PORTB bit 3 / low-voltage programming mode input |
| Chân 28 | RB4 — PORTB bit 4 |
| Chân 29 | RB5 — PORTB bit 5 |
| Chân 30 | RB6/PGC — PORTB bit 6 / in-circuit serial programming clock |
| Chân 31 | RB7/PGD — PORTB bit 7 / in-circuit serial programming data |
| Chân 32 | VSS — Ground reference (digital core) |
| Chân 33 | VDD — Positive supply (digital core) |
| Chân 34 | RD0/PSP0 — PORTD bit 0 / parallel slave port data bit 0 |
| Chân 35 | RD1/PSP1 — PORTD bit 1 / parallel slave port data bit 1 |
| Chân 36 | RD2/PSP2 — PORTD bit 2 / parallel slave port data bit 2 |
| Chân 37 | RD3/PSP3 — PORTD bit 3 / parallel slave port data bit 3 |
| Chân 38 | RD4/PSP4 — PORTD bit 4 / parallel slave port data bit 4 |
| Chân 39 | RD5/PSP5 — PORTD bit 5 / parallel slave port data bit 5 |
| Chân 40 | RD6/PSP6 — PORTD bit 6 / parallel slave port data bit 6 |
Ứng dụng tiêu biểu
PIC16LC65A-04I/P phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Controller, Low-Power Embedded Controller, Consumer Appliance Logic Board, Legacy Peripheral Replacement, Motor Speed and PWM Drive Controller, Communication Bridge (UART/SPI/I2C).
Industrial Sensor Interface Controller
The PIC16LC65A-04I/P fits sensor-interface front-ends because its 33 digital I/O pins can directly drive relay coils, optocouplers, and 4-20 mA loops while its 4 MHz core executes averaging and linearisation in real time. The wide 3V-5.5V range lets the same board accept either 5V sensor rails or 3.3V logic without a level shifter. The PIC's two analog comparators and the capture/compare/PWM module handle closed-loop motor or solenoid control.
Được đề xuất
Low-Power Embedded Controller
The PIC16LC65A-04I/P is well suited to low-power embedded controllers because the LC suffix designates low-power CMOS cells that draw microamp-level sleep currents. With the on-chip brown-out reset and watchdog active, the part can wake from sleep, sample, and return to sleep on a duty cycle that runs for years from a single lithium cell. The 192-byte data RAM is sufficient for ring-buffer sensor logging without external memory.
Được đề xuất
Consumer Appliance Logic Board
The PIC16LC65A-04I/P is a strong fit for fixed-function appliance logic, where the OTP memory is locked at production and the firmware never changes during the product's life. The 40-PDIP through-hole package survives thermal cycling in dishwashers, washing machines, and ovens. Five ports of 8-bit I/O drive the keypad scan, LED matrix, triac-trigger pulse trains via the PWM module, and the USART link to an inverter board.
Được đề xuất
Legacy Peripheral Replacement
The PIC16LC65A-04I/P is often used as a form-fit replacement for end-of-life microcontrollers in legacy industrial cabinets, motor drives, and process controllers. The 40-PDIP footprint matches sockets originally designed for Intel 8051 family or Z8 parts, and the Harvard architecture plus RISC core deliver deterministic interrupt response that matches or improves on the legacy part. Designers can retain the original PCB while modernising firmware in C under MPLAB X.
Được đề xuất
Motor Speed and PWM Drive Controller
The PIC16LC65A-04I/P drives brushed DC or stepper motors using its CCP/PWM module to generate precise duty cycles at the 4 MHz instruction cycle resolution. Five I/O ports each source/sink 20 mA, enough to drive bipolar transistor gates directly. The industrial -40C to +85C temperature grade supports cabinet-mounted motors and outdoor pump controls where ambient swings are routine.
Được đề xuất
Communication Bridge (UART/SPI/I2C)
The PIC16LC65A-04I/P is well matched as a protocol bridge between field devices because it carries both a USART and a Synchronous Serial Port supporting SPI and I2C in hardware. Three independent serial channels let one chip route industrial RS-485 traffic to an I2C sensor while forwarding a SPI display channel to an HMI. The wide 3-5.5V range lets the bridge sit on either side of a level shifter.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65A-04I/P — 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 | PIC16C65B-04I/P | PIC16F74-I/P | PIC16LF74-I/P | PIC16F874A-I/P | PIC16F74A-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP | 40-pin PDIP | 40-pin PDIP | 40-pin PDIP | 40-pin PDIP |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB Flash | 7 KB Flash | 7 KB Flash | 7 KB Flash |
| Max Clock Speed | 4 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 3 V to 5.5 V | 3 V to 5.5 V | 4.5 V to 5.5 V | 2 V to 5.5 V | 4.5 V to 5.5 V | 2 V to 5.5 V |
| Memory Type | OTP (one-time programmable) | OTP | Flash (in-system programmable) | Flash (in-system programmable) | Flash (in-system programmable) | Flash (in-system programmable) |
| ADC Channels | 0 (analog comparators only) | 0 | 5 x 8-bit | 5 x 8-bit | 8 x 10-bit | 8 x 8-bit |
| Programming Method | High-voltage VPP (~13V) | High-voltage VPP | ICSP (low-voltage) | ICSP (low-voltage) | ICSP (low-voltage) | ICSP (low-voltage) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Param Match % | 100 (reference) | 95 | 80 | 90 | 80 | 80 |
Bảo phân biệt quan trọng
- True 3V-5.5V wide-range supply on the LC OTP silicon (vsPIC16F74-I/P)
- Lower cost in high-volume frozen-firmware designs (vsPIC16F74-I/P)
- Industrial /I grade from -40C to +85C (vsPIC16C65A-04/P (commercial grade))
- 33 I/O pins with parallel slave port support (vsPIC16F74-I/P (33 I/O, no PSP))
Ghi chú thiết kế
Estimated: at maximum activity the PIC16LC65A-04I/P draws under 5 mA at 5V (about 25 mW). A 100 nF ceramic decoupling capacitor placed within 5 mm of VDD pins plus a bulk 10 uF electrolytic or tantalum on the same rail is the standard decoupling arrangement. The LC process supports brown-out reset thresholds down to about 3 V, so a 3.3V-only design should leave ample headroom.
Do not rely on ICSP (low-voltage programming) for the PIC16LC65A-04I/P - this device is OTP and requires high-voltage VPP (~13 V) on the MCLR/VPP pin during programming. Using a programmer set to ICSP mode will not detect the device. Use PRO MATE, PM3, PICSTART Plus, or a third-party gang programmer with the OTP device profile selected.
Route the crystal traces for OSC1/OSC2 within a guard ring tied to ground, keeping them away from switching traces and from RA ports that may toggle as outputs. The 40-PDIP package gives 2.54 mm pin pitch and through-hole pads, so pour a single stitched ground plane on the top layer for clean return paths. Place decoupling within one pin-pitch of VDD and VSS.
MCLR must rise monotonically - add a 10 kohm pull-up to VDD and a 100 nF cap to ground to filter transients. Watchdog and brown-out reset should be enabled in the configuration bits for safety-critical applications. The PORTA analog-capable pins default to analog mode on reset; configure the CMCON and ADCON1/ANSEL registers before reading them as digital inputs.
Thông tin tuân thủ
RoHS and lead-free status confirmed via the Microchip product page (per distributor listings as of 2026-09-22). AEC-Q100 automotive qualification is not applicable for industrial-grade /I parts; refer to the PIC16LC65A-04I/PT automotive variant for AEC-Q100 requirements.
