PIC16C65A-04E/P - 4MHz 8-Bit OTP MCU, 7KB EPROM, 40-PDIP | Microchip
MPN: PIC16C65A-04E/P ✗ اختتامِ زندگیPIC16C65A-04E/P جائزہ
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.
کے لیے ڈراپ اِن متبادل PIC16C65A-04E/P — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C65A-04E/P (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Architecture, Package, Timers, Program Memory Size, ADC.
PIC16C65A-04/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C65A-04E/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C65B-04E/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877A-04/P
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16C65A-20/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C65A-04E/P زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| 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 |
| آپریٹنگ درجہ حرارت رینج | -40C to +125C (Extended, "E") |
| پیکیج / کیس | 40-pin PDIP (0.600 inch / 15.24 mm) |
| ماؤنٹنگ ٹائپ | Through-Hole |
| Oscillator Type | External (crystal/RC) |
| Peripherals | USART/SCI, Timer, Watchdog Timer, Analog Comparator |
PIC16C65A-04E/P پن کنفیگریشن
| پن 1 | MCLR/VPP — Master Clear (Reset) input / programming voltage |
| پن 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| پن 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| پن 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| پن 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / VREF |
| پن 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| پن 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| پن 8 | RE0/RD/AN5 — Port E bit 0 / parallel port read / analog input 5 |
| پن 9 | RE1/WR/AN6 — Port E bit 1 / parallel port write / analog input 6 |
| پن 10 | RE2/CS/AN7 — Port E bit 2 / parallel port chip select / analog input 7 |
| پن 11 | VDD — Positive supply voltage |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKIN — Oscillator input / external clock input |
| پن 14 | OSC2/CLKOUT — Oscillator output / clock output |
| پن 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / T1 clock input |
| پن 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| پن 17 | RC2/CCP1 — Port C bit 2 / Capture Compare PWM 1 |
| پن 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| پن 19 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| پن 20 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| پن 21 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| پن 22 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| پن 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| پن 24 | RC5/SDO — Port C bit 5 / SPI data out |
| پن 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| پن 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| پن 27 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| پن 28 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| پن 29 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| پن 30 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage |
| پن 33 | RB0/INT — Port B bit 0 / external interrupt |
| پن 34 | RB1 — Port B bit 1 |
| پن 35 | RB2 — Port B bit 2 |
| پن 36 | RB3/PGM — Port B bit 3 / low-voltage programming |
| پن 37 | RB4 — Port B bit 4 |
| پن 38 | RB5 — Port B bit 5 |
| پن 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| پن 40 | RB7/PGD — Port B bit 7 / ICSP data |
عام استعمالات
PIC16C65A-04E/P کے لیے موزوں ہے 6 ایپلیکیشنs: 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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C65A-04E/P — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | 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 |
اہم امتیازی خصوصیات
- Extended temperature grade (بمقابلہPIC16C65A-04/P)
- Silicon Rev. B fixes Rev. A errata (بمقابلہPIC16C65A-04/P (Rev. A silicon))
- Through-hole 40-pin PDIP assembly (بمقابلہPIC16F877A-I/P (also 40-pin PDIP but flash-based))
- Fully static design with SLEEP mode (بمقابلہPIC16C65A-20/P (20 MHz variant))
ڈیزائن نوٹس
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.
تعمیل کی معلومات
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.
