PIC16C64A-20E/P - 8-bit OTP MCU, 20MHz, 3.5KB, 40-PDIP | Microchip
MPN: PIC16C64A-20E/P ✗ اختتامِ زندگیPIC16C64A-20E/P جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, digital I/O, and on-chip peripherals such as timers, capture modules, and a USART. The PIC16C family sits in the broader taxonomy of microcontroller -> embedded processor -> semiconductor device. PIC MCUs use a Harvard RISC core with only 35 single-word instructions, where all instructions execute in one cycle except program branches (two cycles), enabling deterministic real-time response in control loops.
Key features of the PIC16C64A-20E/P include five 8-bit I/O ports (PORTA-PORTE), three timer/counters (TMR0, TMR1, TMR2), a 2-capture/compare/PWM module, a USART with on-chip baud-rate generator, an 8-bit A/D converter (on selected pins), a watchdog timer with on-chip RC oscillator, and in-circuit serial programming (ICSP) via RB6/RB7. The device draws < 2 mA typical at 5 V / 4 MHz and < 1 µA typical standby current at 3 V / 32 kHz.
Architecturally, the PIC16C64A uses a 14-bit instruction word with a 8-bit data path, a hardware stack depth of 8, and direct, indirect, and relative addressing modes. The on-chip EPROM-based program store is one-time programmable (OTP), distinguishing it from the FLASH-based PIC16F family; for in-system reprogrammability the PIC16F64A or PIC16F74 family should be considered.
Typical applications include industrial process control, automotive body electronics, motor control (low-side PWM drive), smart sensor interfaces, and legacy embedded systems where the long-life, second-source PIC architecture remains specified by end customers. The 20 MHz throughput supports protocols such as RS-232, RS-485, and I2C master mode in software bit-banging.
When designing with the PIC16C64A, note that MCLR must be tied to VDD through a 10 kohm pull-up and that decoupling requires a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin. The '20E' suffix denotes 20 MHz operation, Extended temperature; 'P' denotes 40-pin PDIP. Note: this part is Not Recommended for new designs (NRND) per Microchip's product status page.
کے لیے ڈراپ اِن متبادل PIC16C64A-20E/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 PIC16C64A-20E/P (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Architecture, Package, Timers, Data EEPROM, Maximum Clock Frequency.
PIC16F74-I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C64A-04I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C64A-10I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C64A-20/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F74-I/P
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C64A-20E/P زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Series | PIC 16C |
| Core Architecture | 8-bit RISC (Harvard) |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| Data RAM | 192 bytes |
| Data EEPROM | Not present |
| زیادہ سے زیادہ کلاک فریکوئنسی | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage Range | 3.0 V to 6.0 V |
| آپریٹنگ درجہ حرارت رینج | -40C to +125C (Extended, 'E' suffix) |
| I/O Pins | 33 (PORTA-PORTE, 8-bit bidirectional) |
| Timers | 3 (TMR0, TMR1, TMR2) |
| Capture/Compare/PWM | 1 module, 16-bit |
| Communication | USART with on-chip baud-rate generator |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| In-Circuit Programming | ICSP (RB6/RB7) |
| پیکیج | 40-pin PDIP (0.600 in / 15.24 mm) |
| ماؤنٹنگ ٹائپ | Through-Hole |
PIC16C64A-20E/P پن کنفیگریشن
| پن 1 | MCLR — Master Clear (Reset, active low) - tie to VDD via 10 kohm |
| پن 2 | RA0 — PORTA bit 0 (digital I/O or analog AN0 on '65/'66/'67) |
| پن 3 | RA1 — PORTA bit 1 |
| پن 4 | RA2 — PORTA bit 2 |
| پن 5 | RA3 — PORTA bit 3 |
| پن 6 | RA4 — PORTA bit 4 (open-drain, T0CKI clock input) |
| پن 7 | RA5 — PORTA bit 5 (also /SS input on synchronous SPI) |
| پن 8 | RE0 — PORTE bit 0 (/RD control for parallel slave port) |
| پن 9 | RE1 — PORTE bit 1 (/WR control for parallel slave port) |
| پن 10 | RE2 — PORTE bit 2 (/CS control for parallel slave port) |
| پن 11 | VDD — Positive supply (3.0 V to 6.0 V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1 — Crystal oscillator or external clock input |
| پن 14 | OSC2 — Crystal oscillator output (or RC mode clock out) |
| پن 15 | RC0 — PORTC bit 0 (T1OSO timer1 oscillator output) |
| پن 16 | RC1 — PORTC bit 1 (T1OSI timer1 oscillator input) |
| پن 17 | RC2 — PORTC bit 2 (CCP1 PWM output) |
| پن 18 | RC3 — PORTC bit 3 (SCL I2C clock or SPI clock) |
| پن 19 | RD0 — PORTD bit 0 (parallel slave port data) |
| پن 20 | RD1 — PORTD bit 1 |
| پن 21 | RD2 — PORTD bit 2 |
| پن 22 | RD3 — PORTD bit 3 |
| پن 23 | RC4 — PORTC bit 4 (SDA I2C data or SPI data input) |
| پن 24 | RC5 — PORTC bit 5 (SPI data output) |
| پن 25 | RC6 — PORTC bit 6 (TX USART asynchronous transmit) |
| پن 26 | RC7 — PORTC bit 7 (RX USART asynchronous receive) |
| پن 27 | RD4 — PORTD bit 4 |
| پن 28 | RD5 — PORTD bit 5 |
| پن 29 | RD6 — PORTD bit 6 |
| پن 30 | RD7 — PORTD bit 7 |
| پن 31 | VSS — Ground reference (second pin for noise isolation) |
| پن 32 | VDD — Positive supply (second pin) |
| پن 33 | RB0 — PORTB bit 0 (external interrupt INT) |
| پن 34 | RB1 — PORTB bit 1 |
| پن 35 | RB2 — PORTB bit 2 |
| پن 36 | RB3 — PORTB bit 3 |
| پن 37 | RB4 — PORTB bit 4 (interrupt-on-change) |
| پن 38 | RB5 — PORTB bit 5 (interrupt-on-change) |
| پن 39 | RB6 — PORTB bit 6 (ICSP clock, interrupt-on-change) |
| پن 40 | RB7 — PORTB bit 7 (ICSP data, interrupt-on-change) |
عام استعمالات
PIC16C64A-20E/P کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Process Control, Automotive Body Electronics (Legacy), Smart Sensor Interface Node, Motor Speed Control (Low-side PWM), Embedded Serial Display Terminal, Legacy Industrial Controller Retrofit.
Industrial Process Control
The PIC16C64A-20E/P suits industrial process control boards running closed-loop PID at moderate sample rates. Its 20 MHz clock yields 5 MIPS, which is sufficient to bit-bang RS-485 or Modbus RTU at 9600 baud while servicing one capture input for pulse counting. The 33 digital I/O lines drive opto-isolated inputs and relay outputs directly without external latches. Extended temperature grading (-40C to +125C) supports factory-floor enclosures, and the USART with on-chip baud-rate generator eliminates an external crystal for the comms interface. The 192-byte RAM limits stack depth, so avoid recursive algorithms.
تجویز کردہ
Automotive Body Electronics (Legacy)
The PIC16C64A-20E/P historically powered body-electronics modules such as window lifters, seat controllers, and HVAC blend-door actuators. The Extended -40C to +125C temperature range and 6 V tolerant VDD cover 12 V automotive transients after regulation. The PWM module drives brushed DC motors for mirror adjustment; the A/D converter reads NTC thermistor inputs from cabin sensors. The OTP program memory suits cost-sensitive, fixed-function modules where firmware is locked at production.
تجویز کردہ
Smart Sensor Interface Node
The PIC16C64A-20E/P can serve as a sensor interface node on a 4-20 mA current loop or RS-485 multi-drop bus. Its 8-bit A/D converter (on the PIC16C65/66/67 pin-compatible variants) reads analog sensors with 0.4% resolution after calibration. The USART generates standard baud rates without a host processor, and the watchdog timer with on-chip RC oscillator recovers from ESD-induced software lockups. Sleep current under 1 µA at 3 V supports battery-sleep duty cycling in remote sensor applications.
تجویز کردہ
Motor Speed Control (Low-side PWM)
The PIC16C64A-20E/P drives low-side PWM motor controllers for small DC and unipolar stepper motors up to ~1 A. The Capture/Compare/PWM module delivers a hardware PWM at up to 20 kHz without CPU overhead, while TMR2 provides the period base. The 33 I/O lines accept quadrature encoder feedback for closed-loop speed regulation. Rated to 6 V VDD, the device can be powered directly from a 5 V regulated bus without level shifting to logic-level gate drivers.
تجویز کردہ
Embedded Serial Display Terminal
The PIC16C64A-20E/P can act as a low-cost serial-to-parallel interface for character LCD or vacuum-fluorescent displays. The USART receives ASCII data at standard baud rates and the 8-bit PORTA-PORTE pins drive the LCD in 4-bit or 8-bit parallel mode. The 192-byte RAM holds one display line plus a small command interpreter. Combined with the 20 MHz instruction rate, full screen redraws of 16x2 character LCDs complete in milliseconds via software-driven strobing.
تجویز کردہ
Legacy Industrial Controller Retrofit
The PIC16C64A-20E/P remains in service as a pin-compatible replacement for original PIC16C64-04/P and PIC16C64-10/P sockets in long-life industrial equipment. The 40-pin PDIP footprint is mechanically identical to the older PIC16C64, allowing board-level swaps without PCB rework. The 20 MHz speed grade exceeds the older 4 MHz and 10 MHz parts, so existing firmware executes faster; code timing loops may require recalibration if delays were calibrated for the slower grades.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C64A-20E/P — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F74-I/P | PIC16C64A-04I/P | PIC16C64A-10I/P | PIC16C64A-20/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Program Memory | 3.5 KB OTP | 4 KB FLASH | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Maximum Clock | 20 MHz | 20 MHz | 4 MHz | 10 MHz | 20 MHz |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| Memory Type | OTP EPROM (one-time) | FLASH (10K erase cycles) | OTP EPROM | OTP EPROM | OTP EPROM |
| Lifecycle Status | NRND (Not Recommended for new designs) | Active | NRND | NRND | Active |
اہم امتیازی خصوصیات
- Higher clock speed than the 04 and 10 MHz siblings in the same PIC16C64A family (بمقابلہPIC16C64A-04I/P)
- Extended -40C to +125C temperature range vs commercial 0C to +70C of PIC16C64A-20/P (بمقابلہPIC16C64A-20/P)
- OTP program memory costs less than FLASH-based PIC16F74 in low-volume runs (بمقابلہPIC16F74-I/P)
ڈیزائن نوٹس
Power the PIC16C64A-20E/P from a regulated 3.0 V to 6.0 V supply. Place a 0.1 uF decoupling capacitor within 5 mm of VDD (pin 11) and a bulk 10 uF tantalum or aluminum electrolytic capacitor on the supply rail. Both VDD pins (11 and 32) and both VSS pins (12 and 31) must be connected; floating any of these can cause latch-up or ADC reference drift. For battery applications, the on-chip brown-out reset is unavailable on this family - implement external voltage supervision with a discrete reset IC such as the MCP130.
Route the 20 MHz crystal traces symmetrically and keep them short (under 10 mm). Use a grounded guard ring around OSC1/OSC2 to prevent the oscillator from coupling into adjacent analog or EEPROM signals. MCLR must connect to VDD through a 10 kohm resistor; do not drive MCLR directly from a logic output without isolation. For in-circuit serial programming, expose RB6 and RB7 on a 6-pin header with VDD, VSS, and MCLR to enable field firmware update during the PIC16C64A NRND lifetime window.
Do not assume the PIC16C64A's PORTA includes the A/D converter - the PIC16C64A is the digital-only member of the PIC16C6X family; A/D appears only on PIC16C65/C65A/C66/C67. Do not connect external EEPROM I2C devices to SCL/SDA without pull-up resistors to VDD - the PIC16C64A's PORTC has no internal weak pull-ups on RC3/RC4. Finally, note that OTP memory cannot be erased - a programming error on the PIC16C64A permanently bricks the device; develop and debug firmware on a PIC16F74-I/P or windowed PIC16C64A JW version first.
تعمیل کی معلومات
RoHS compliance and lead-free status not stated in the verified web data. As an older EPROM-based OTP part originally released in the 1990s, PIC16C64A-20E/P may not be RoHS compliant - confirm with Microchip or distributor before using in RoHS-restricted regions.
