PIC16C65A-04E/P - 4MHz 8-Bit OTP MCU, 7KB EPROM, 40-PDIP | Microchip
MPN: PIC16C65A-04E/P ✗ Cuối đờiPIC16C65A-04E/P Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on one silicon die. Within the wider taxonomy, this part sits in the microcontroller -> microprocessor -> semiconductor -> integrated circuit hierarchy. PIC MCUs implement a Harvard RISC architecture with 35 single-word instructions and a 200 ns instruction cycle at 4 MHz, which is why PIC parts are commonly classified as low-cost, easy-to-program 8-bit controllers.
Key features of the PIC16C65A-04E/P include an internal 8-bit timer/counter, a watchdog timer, an analog comparator, and a synchronous/asynchronous serial port (USART/SCI). Its fully static design means the clock can be stopped without losing register state, enabling low-power sleep/idle modes. The Extended temperature suffix "E" qualifies the part for harsh industrial environments that exceed the commercial 0C to +70C range.
Architecturally, the PIC16C65A-04E/P uses a 14-bit instruction word with an 8-bit data path, separating program and data buses so an instruction can be fetched while the previous one is executing. OTP (one-time programmable) EPROM program memory allows fast prototyping but only supports a single programming cycle - this differs from flash-based PIC16F successors which offer in-circuit reprogramming.
Typical applications include industrial control logic, motor drivers, sensor interfacing, and legacy embedded systems that still require a 40-pin PDIP footprint for through-hole assembly. Designers often choose this part when modern flash MCUs are unavailable or when maintaining drop-in compatibility with older 40-pin PIC16 designs is mandatory.
When designing with this MCU, plan the decoupling network carefully: place a 0.1 uF ceramic bypass close to VDD and add bulk capacitance for analog references. Programming the OTP device requires a compatible device programmer; once blown, the program memory cannot be erased, so verify firmware in a flash equivalent first.
This page synthesizes distributor availability, same-family drop-in PIC alternatives, and design notes not collated in the original Microchip datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65A-04E/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 PIC16C65A-04E/P (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Timers, Program Memory Size, ADC.
PIC16C65A-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04E/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F877A-04/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65A-20/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04E/P Tỷ lệ tối đa & tính chất điện
| Product Family | PIC16C6x |
| Core | 8-bit PIC RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| EEPROM Size | 0 bytes (none on-chip) |
| Maximum CPU Speed | 4 MHz |
| Instruction Cycle | 200 ns at 4 MHz |
| Number of I/O Pins | 33 |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Extended, "E") |
| Hộp / Vỏ | 40-pin PDIP (0.600 inch / 15.24 mm) |
| Kiểu lắp đặt | Through-Hole |
| Oscillator Type | External (crystal/RC) |
| Peripherals | USART/SCI, Timer, Watchdog Timer, Analog Comparator |
Cấu hình chân PIC16C65A-04E/P
| 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 / VREF |
| 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 |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 14 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / T1 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 TX / USART clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART RX / 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 |
Ứng dụng tiêu biểu
PIC16C65A-04E/P phù hợp cho 6 Áp dụngs: Industrial Control Logic, Motor Driver Control Board, Sensor Interface and Signal Conditioning, Legacy Embedded System Maintenance, HMI Keypad and Display Interface, Educational and Prototyping Platform.
Industrial Control Logic
The PIC16C65A-04E/P fits industrial control logic with its 33 GPIO pins, 4 MHz CPU, and Extended temperature grade (-40C to +125C). Its PIC RISC core executes 35 single-word instructions per 200 ns cycle, allowing deterministic sequencing of relays, solenoids, and contactor drivers. With 7 KB OTP program memory, designers can implement ladder-logic-equivalent state machines for conveyor sorting, packaging lines, and process interlocks. The fully static design supports low-power sleep between control cycles, which is critical for 24 V industrial bus systems.
Được đề xuất
Motor Driver Control Board
The PIC16C65A-04E/P suits small brushed DC and stepper motor control boards thanks to its PWM-capable timer, 33 I/O pins for H-bridge gate drive, and analog comparator for back-EMF sensing. At 4 MHz with a 200 ns instruction cycle, the part generates PWM frequencies up to approximately 20 kHz with 8-bit duty resolution, enough for low-noise commutation of small hobby-grade and appliance motors. The Extended temperature grade is essential for motor housings that can exceed 70C under continuous load.
Được đề xuất
Sensor Interface and Signal Conditioning
The PIC16C65A-04E/P serves sensor interface nodes by combining its 33 digital I/O pins, USART/SCI serial port, and analog comparator for threshold detection. With 7 KB of OTP memory, firmware can implement sensor linearization, debounce, and SCADA-protocol framing. Operating from 2.5 V to 6.0 V, the part supports both 3.3 V and 5 V sensor rails, while its 15 uA typical quiescent draw at 5 V / 4 MHz enables battery-powered field transmitters. Extended temperature tolerance is vital for outdoor and factory-floor installations.
Được đề xuất
Legacy Embedded System Maintenance
The PIC16C65A-04E/P is used to maintain legacy embedded systems where redesign to flash memory is cost-prohibitive. Its 40-pin PDIP footprint matches older designs that are otherwise obsolete, allowing direct PCB-level substitution. With 192 bytes of RAM and 7 KB of OTP, the part reproduces original firmware behavior bit-for-bit, which is essential when a regulatory-certified product cannot be re-validated. The Extended temperature suffix ensures availability of -40C to +125C industrial variants for field-spares inventory.
Được đề xuất
HMI Keypad and Display Interface
The PIC16C65A-04E/P drives HMI keypads and character-LCD interfaces using its 33 GPIO pins to scan up to a 4x5 matrix and write 4-bit data to HD44780-compatible displays. At 4 MHz, scan rates comfortably exceed 100 Hz with full debounce, eliminating key bounce artifacts. The Extended -40C to +125C operating range suits outdoor kiosks, automotive test equipment, and HVAC control panels. Its 7 KB OTP memory stores lookup tables for menu navigation without external storage.
Được đề xuất
Educational and Prototyping Platform
The PIC16C65A-04E/P works as an educational 8-bit MCU platform because of its 35-instruction RISC set, 40-pin PDIP through-hole package, and abundant documentation from Microchip. The 7 KB OTP, 192 B RAM, and USART let students build UART-driven projects, timers, and interrupt-driven firmware in assembly or C. Extended temperature operation demonstrates real-world industrial-grade behavior, and the 40-pin PDIP format survives repeated insertion into breadboards and ZIF sockets during lab exercises.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65A-04E/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 | PIC16C65A-04/P | PIC16C65B-04E/P | PIC16F877A-04/P | PIC16C65A-20/P | PIC16C65A-04E/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP (0.600 in / 15.24 mm) | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 44-pin PLCC - different mechanical package |
| Program Memory Type | OTP EPROM (7 KB / 4K x 14) | OTP EPROM (7 KB) | OTP EPROM (7 KB) | Flash (14 KB) | OTP EPROM (7 KB) | OTP EPROM (7 KB) |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz |
| Operating Temperature Grade | Extended (-40C to +125C) | Commercial (0C to +70C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Extended (-40C to +125C) |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 368 bytes | 192 bytes | 192 bytes |
| Number of I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | None (analog comparator only) | None | None | 8-channel 10-bit | None | None |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Active | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Extended temperature grade (vsPIC16C65A-04/P)
- Silicon Rev. B fixes Rev. A errata (vsPIC16C65A-04/P (Rev. A silicon))
- Through-hole 40-pin PDIP assembly (vsPIC16F877A-I/P (also 40-pin PDIP but flash-based))
- Fully static design with SLEEP mode (vsPIC16C65A-20/P (20 MHz variant))
Ghi chú thiết kế
Estimated: At 5 V supply and 4 MHz oscillator, the PIC16C65A-04E/P draws approximately 15 uA typical quiescent current per the Microchip PIC16C6X datasheet. Place a 0.1 uF ceramic bypass capacitor within 5 mm of pins 11 and 32 (VDD) and a bulk 10 uF tantalum or aluminum cap on the same rail. For battery-powered designs, use the SLEEP instruction and configure the watchdog timer to wake the part periodically; the fully static architecture allows the clock to be halted in software without losing RAM contents.
The PIC16C65A-04E/P uses OTP EPROM, not flash, so once programmed the firmware cannot be electrically erased. Always validate firmware on a flash-based equivalent such as the PIC16F877A-04/P first, then commit to the OTP part only after verification. MCLR (pin 1) must be pulled high through a 10 kohm resistor for normal operation; leaving it floating will cause intermittent resets. The "E" suffix designates the Extended temperature grade - never substitute the commercial PIC16C65A-04/P in Extended-grade applications.
The 40-pin PDIP through-hole footprint allows generous trace routing but requires a clean analog/digital ground split. Per the Microchip PIC16C6X datasheet, the analog comparator reference input (RA3/AN3/VREF) is sensitive to digital switching noise; route VREF traces away from the oscillator and place a small RC filter if comparator stability is critical. Reserve an ICSP header (PGC on RB6, PGD on RB7, MCLR/VPP on pin 1) for factory programming even if in-circuit programming is not planned, since the OTP die cannot be socketed after programming.
The USART/SCI pins (RC6/TX, RC7/RX) share port C with the SPI/I2C peripherals; configure the TRISC register carefully to avoid bus contention. The PIC16C65A-04E/P does not have an internal ADC, so any analog signal must be conditioned through the analog comparator on RA3/RA2 or an external ADC. Maximum source/sink current per I/O is 25 mA per pin and 200 mA per port per Microchip datasheet DS30234D - never drive LEDs without a current-limiting resistor.
Thông tin tuân thủ
RoHS, REACH, lead-free, and halogen-free status were not present in the verified web data and are flagged [DATA_NEEDED]. The part is industrial Extended-grade, not AEC-Q100 automotive qualified.
