PIC16C64A-04I/P - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
MPN: PIC16C64A-04I/P ✓ פעילPIC16C64A-04I/P סקירה
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16C family uses a RISC (Reduced Instruction Set Computer) architecture with only 35 single-word instructions, making it one of the easiest 8-bit MCU families to learn. MCUs sit within the broader embedded-computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. The OTP variant means the program memory is user-programmable exactly once via a device programmer, then becomes read-only, making it suitable for low-cost, high-volume production where firmware is finalized.
Key features include 33 digital I/O pins, an 8-bit timer/counter, a 16-bit timer/counter with capture/compare/PWM, an analog comparator, and a synchronous serial port (SSP) supporting SPI and I2C master/slave modes. The PIC16C64A's RISC pipeline executes most instructions in a single instruction cycle (200 ns at 20 MHz, 1 us at 4 MHz), giving deterministic timing suitable for real-time control loops. Power consumption is optimized through sleep mode with wake-up via interrupt or watchdog.
Typical applications include industrial control systems, appliance controllers, automotive body electronics, simple sensor interfaces, and replacement of discrete logic circuits. The 40-pin PDIP package remains popular for through-hole prototyping, breadboarding, and educational platforms where socketed or hand-soldered parts simplify development. Industrial-grade temperature qualification supports factory-floor deployment.
The newer Microchip PIC16F877A is the recommended Flash-memory successor with the same 40-pin pinout, in-circuit debugging, and 10x more program memory. The legacy PIC16C64A is generally used today only for legacy maintenance or exact BOM-replication tasks where OTP is acceptable. Engineers should confirm long-term availability before designing in this part.
This page consolidates distributor pricing, drop-in compatible PIC16C alternatives, and practical design considerations not found in the manufacturer datasheet alone, helping engineers evaluate whether PIC16C64A-04I/P fits their application or whether a Flash-based successor is more appropriate for new designs.
חלופות תחליף ישיר עבור PIC16C64A-04I/P — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16C64A-04I/P (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, Watchdog Timer, Mounting Type, Core Architecture.
PIC16C64B-04I/P
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16C65B-04I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C64A-04I/L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F74-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F877A-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C622A-04I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C64A-04I/P דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | 8-bit PIC RISC |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| Data EEPROM | 0 bytes |
| תדר שעון מקסימלי | 4 MHz (-04 speed grade) |
| Instruction Cycle Time | 1 us at 4 MHz |
| Operating Voltage Min | 2.5 V |
| Operating Voltage Max | 6.0 V |
| I/O Pins | 33 |
| Timers | 1 x 8-bit + 1 x 16-bit with CCP |
| Analog Peripherals | Analog Comparator |
| Serial Interfaces | SSP (SPI / I2C master-slave), USART |
| מארז | 40-pin PDIP (Plastic DIP, 0.600 in) |
| סוג הרכבה | Through-Hole |
| טמפרטורת פעולה | -40C to +85C (Industrial) |
| מספר פינים | 40 |
| סטטוס RoHS | Non-Compliant (contains lead, PDIP) |
| רמת MSL | 1 (unlimited floor life, no bake required) |
תצורת פינים של PIC16C64A-04I/P
| פין 1 | MCLR — Master Clear (reset) input, active low |
| פין 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| פין 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| פין 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| פין 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / VREF |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / analog input 4 |
| פין 8 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| פין 9 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| פין 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| פין 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| פין 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM1 |
| פין 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 16 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| פין 17 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| פין 18 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| פין 19 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| פין 20 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| פין 21 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| פין 22 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| פין 23 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| פין 24 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| פין 25 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| פין 26 | VSS — Ground reference |
| פין 27 | VDD — Positive supply voltage |
| פין 28 | RB0/INT — PORTB bit 0 / external interrupt |
| פין 29 | RB1 — PORTB bit 1 |
| פין 30 | RB2 — PORTB bit 2 |
| פין 31 | RB3 — PORTB bit 3 |
| פין 32 | RB4 — PORTB bit 4 |
| פין 33 | RB5 — PORTB bit 5 |
| פין 34 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 35 | RB7/PGD — PORTB bit 7 / ICSP data |
| פין 36 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| פין 37 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| פין 38 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| פין 39 | VDD — Positive supply voltage (second VDD pin) |
| פין 40 | VSS — Ground reference (second VSS pin) |
יישומים טיפוסיים
PIC16C64A-04I/P מתאים עבור 6 יישוםs: Industrial Control Systems, Appliance Controllers, Automotive Body Electronics, Sensor Interface Hubs, Educational Development Platforms, Legacy Replacement / Maintenance.
Industrial Control Systems
The PIC16C64A-04I/P fits industrial control applications thanks to its industrial-grade temperature range (-40C to +85C), 4 MHz deterministic RISC execution, and 33 GPIO pins for sensor and actuator interfacing. With a 1 us instruction cycle at 4 MHz, the MCU provides tight loop timing for PID control loops, conveyor sequencing, and machine-tool auxiliary logic. The OTP memory and PDIP-40 through-hole package simplify field-replacement and legacy-system maintenance in factory-floor installations where socketed parts are favored.
מומלץ
Appliance Controllers
White-goods appliance controllers (washing machines, dishwashers, microwave ovens) historically use PIC16C64A-series MCUs because the OTP memory locks firmware at production and the 40-pin PDIP package accepts hand-soldered rework. The PIC16C64A's analog comparator enables zero-crossing detection for triac-driven heater and motor loads, while the USART supports simple keypad or display panel interfaces. Sleep mode with interrupt wake-up extends battery life in cordless appliance variants.
מומלץ
Automotive Body Electronics
Automotive body modules (window lift controllers, mirror adjusters, seat controllers, lighting drivers) commonly use PIC16C64A-class MCUs because of their industrial temperature range, robust RISC architecture, and 25 mA sink capability on each I/O pin for direct relay driving. The synchronous serial port (SSP) interfaces to SPI-controlled LED drivers or keypad scanners. For new designs, automotive-grade equivalents like PIC16F877A-I/P with AEC-Q100 qualification are preferred, but PIC16C64A-04I/P remains in legacy vehicle platforms.
מומלץ
Sensor Interface Hubs
Sensor interface and signal-conditioning hubs benefit from PIC16C64A-04I/P's analog comparator for threshold detection, 16-bit timer for pulse-width measurement, and 33 digital I/O for multiplexing multiple sensor channels. The 4 MHz clock and 1 us instruction cycle deliver deterministic sampling rates suitable for low-bandwidth sensor fusion (temperature, humidity, simple motion). The 128-byte RAM accommodates small data buffers; larger buffers require migration to PIC16F877A's 368 bytes RAM.
מומלץ
Educational Development Platforms
PIC16C64A-04I/P's 40-pin PDIP package and breadboard-friendly 0.1-inch pin pitch make it a popular choice for university microcontroller courses and embedded-systems training. The PIC16C RISC instruction set (35 single-word instructions) is documented in countless textbooks, and the OTP nature teaches students about production-grade firmware commitments. Modern curricula typically use Flash-based PIC16F877A-I/P for in-circuit reprogramming, but PIC16C64A-04I/P remains in legacy lab kits.
מומלץ
Legacy Replacement / Maintenance
PIC16C64A-04I/P is most commonly specified today as a maintenance replacement for legacy equipment where OEM firmware was written for this exact OTP die. Industrial controllers, scientific instruments, and military systems designed in the late 1990s often require this exact part number to preserve firmware compatibility. The 40-pin PDIP socketed package simplifies field replacement without desoldering. Active production status at Microchip supports ongoing supply for installed-base maintenance through 2026 and beyond.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C64A-04I/P — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16C64B-04I/P | PIC16C65B-04I/P | PIC16F74-I/P | PIC16F877A-I/P | PIC16C622A-04I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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) | 40-pin PDIP (same) |
| Program Memory Type | OTP | OTP | OTP | Flash | Flash | OTP |
| Program Memory Size | 3.5 KB | 7.2 KB | 7.2 KB | 4 KB | 14 KB | 3.5 KB |
| RAM | 128 bytes | 192 bytes | 192 bytes | 192 bytes | 368 bytes | 128 bytes |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz |
| ADC | None | None | None | 8-ch 8-bit | 8-ch 10-bit | None |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Industrial | Industrial | Industrial |
מבדילים עיקריים
- OTP memory locks firmware for tamper-proof production (לעומתPIC16F877A-I/P)
- Industry-standard 40-pin PDIP pinout enables drop-in upgrades (לעומתPIC16C622A-04I/P)
- Industrial temperature range for factory-floor deployment (לעומתPIC16C64A-04/P)
הערות תכנון
PIC16C64A-04I/P typically draws 10-15 mA at 5V and 4 MHz active, dropping to microampere-level sleep currents (typically <5 uA). Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 11 and 32), and add a bulk 10 uF tantalum or ceramic at the board's power entry. For battery-backed designs, route the MCLR pin through a 10 kohm pull-up to ensure clean reset behavior across voltage drops. Estimated: based on datasheet typical I_DD figures for PIC16C family at 4 MHz.
When laying out the 40-pin PDIP footprint, reserve a 0.1-inch pin pitch through-hole pattern with at least 0.6 inch row spacing (standard PDIP-40 mechanical outline). Keep the oscillator traces (OSC1/OSC2) short and surrounded by a ground guard ring to minimize EMI coupling. Place the ICSP clock and data lines (RB6/PGC, RB7/PGD) near an in-circuit programming header for production programming convenience. For high-noise industrial environments, add TVS diodes on MCLR and external interrupt pins.
Critical OTP consideration: PIC16C64A-04I/P program memory is one-time-programmable - once programmed, it cannot be erased or rewritten. Plan firmware versions carefully and use a UV-erase windowed package variant (PIC16C64A-04I/L, ceramic LCC) for development, then transition to the plastic PDIP for production. Verify configuration bits (oscillator selection, watchdog enable, code protect) before programming because incorrect settings cannot be reversed. Always read back and verify the programmed device before soldering or shipping.
The analog comparator inputs (RA0-RA5) share pins with digital I/O; when used in analog mode, decouple these traces from digital switching signals and route them away from clock lines. Place the comparator reference voltage (RA3/VREF) source close to the pin with a 100 nF bypass capacitor. For SPI/I2C bus lines (RC3/RC4/RC5), keep series resistors (typically 100 ohm) close to the MCU end to dampen reflections in longer bus runs.
מידע על תאימות
PDIP-40 plastic package contains lead solder, making this part non-RoHS compliant. For RoHS-compliant applications, use the surface-mount PIC16C64A-04I/SO or PIC16F877A-I/P variants. REACH compliance is per Microchip product declarations. AEC-Q100 automotive qualification is not applicable for this industrial-grade part; for automotive use, consider PIC16F877A-I/P automotive variants.
