PIC16C64A-20/P - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
MPN: PIC16C64A-20/P ✗ סוף ייצורPIC16C64A-20/P סקירה
Background knowledge: A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral set on one die. The PIC16C family belongs to the 8-bit microcontroller product type, which itself sits inside the broader integrated circuit (semiconductor) hierarchy. OTP memory is programmed once with a device programmer and is non-erasable; the C (CMOS/EPROM) suffix here denotes EPROM-based program storage, distinguishing this part from flash-based PIC16F siblings.
Key features include 22 I/O pins, 8-channel 8-bit analog-to-digital conversion on later silicon revisions of the family, USART serial port, capture/compare/PWM module, and parallel slave port. Wide operating voltage range spans 2.5 V to 6.0 V (commercial, industrial, and extended temperature ranges), with low-power consumption: 5 V at 4 MHz draws only 15 uA typical, and 3 V at 32 kHz draws 1 uA typical - ideal for battery-backed and sleep-dominated designs.
Technical depth: the PIC16C64A uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand read to occur in the same cycle. Its 14-bit instruction word yields richer addressing than 12-bit predecessors while staying code-density competitive. The architecture is fully static, so the clock can be stopped without losing register state, enabling low-power idle behavior under software control.
Typical applications include industrial control panels, appliance motor control, sensor interfacing, and low-speed serial communication hubs. The 40-pin PDIP footprint also makes it convenient for through-hole hobbyist, educational, and legacy replacement designs where hand-soldering or socketed prototyping is desired.
Design consideration: the /P suffix denotes a plastic 40-pin PDIP package rated for industrial temperature (-40C to +85C). Pin-compatible OTP and EPROM windowed variants share the same footprint, but verify ADC, USART, and CCP peripheral counts when migrating firmware across the family.
This page consolidates distributor pricing, drop-in pin-compatible alternatives from the same PIC16C family, and engineering notes compiled from the manufacturer datasheet and reference designs - information not found in a single distributor listing.
חלופות תחליף ישיר עבור PIC16C64A-20/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-20/P (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, Program Memory Type, Core Architecture, Program Memory Size.
PIC16C65B-20/P
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F74-I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C74B-20/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C64A-04I/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C64A-10/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C64A-20/P דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC16C6X 8-bit RISC (Harvard) |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| תדר שעון מקסימלי | 20 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Supply Voltage (commercial) | 4.0 V to 5.5 V typical |
| I/O Pins | 22 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| USART | 1 (SCI) |
| CCP Modules | [DATA_NONEEDED: 2 CCP per datasheet, listed as 2 capture/compare/PWM] |
| Watchdog Timer | Yes (WDT with on-chip RC oscillator) |
| Parallel Slave Port | Yes (8-bit PSP) |
| Power-on Reset | Yes |
| Current @ 5V, 4 MHz | 15 uA typical |
| Current @ 3V, 32 kHz | 1 uA typical |
| טווח טמפרטורת פעולה | -40C to +85C (industrial) |
| מארז | 40-pin PDIP (P) |
| סוג הרכבה | Through-Hole |
| רמת MSL | Not applicable (through-hole) |
תצורת פינים של PIC16C64A-20/P
| פין 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 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 / ADC reference |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| פין 8 | OSC1/CLKIN — Oscillator input / external clock |
| פין 9 | OSC2/CLKOUT — Oscillator output |
| פין 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| פין 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| פין 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| פין 13 | RC3/SCK/SCL — PORTC bit 3 / SPI SCK / I2C SCL |
| פין 14 | RC4/SDI/SDA — PORTC bit 4 / SPI SDI / I2C SDA |
| פין 15 | RC5/SDO — PORTC bit 5 / SPI SDO |
| פין 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| פין 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| פין 18 | GND — Ground reference |
| פין 19 | VDD — Positive supply voltage |
| פין 20 | RB0/INT — PORTB bit 0 / external interrupt |
| פין 21 | RB1 — PORTB bit 1 |
| פין 22 | RB2 — PORTB bit 2 |
| פין 23 | RB3 — PORTB bit 3 |
| פין 24 | RB4 — PORTB bit 4 |
| פין 25 | RB5 — PORTB bit 5 |
| פין 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| פין 28 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| פין 29 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| פין 30 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| פין 31 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| פין 32 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| פין 33 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| פין 34 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| פין 35 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| פין 36 | RE0/RD/AN5 — PORTE bit 0 / PSP read strobe / analog input 5 |
| פין 37 | RE1/WR/AN6 — PORTE bit 1 / PSP write strobe / analog input 6 |
| פין 38 | RE2/CS/AN7 — PORTE bit 2 / PSP chip select / analog input 7 |
| פין 39 | VDD — Positive supply voltage (second pin) |
| פין 40 | GND — Ground reference (second pin) |
יישומים טיפוסיים
PIC16C64A-20/P מתאים עבור 6 יישוםs: Industrial Control Panels, Appliance Motor Control, Sensor Data Acquisition Hubs, Educational and Hobbyist Platforms, Legacy Embedded System Replacement, Low-Power Battery Devices.
Industrial Control Panels
The PIC16C64A-20/P's 22 digital I/O, 3 timers, USART, and 20 MHz CPU are well matched to industrial control panels driving relays, solenoids, keypads, and seven-segment displays. Its industrial temperature rating (-40C to +85C) and wide 2.5 V to 6.0 V supply tolerance tolerate harsh factory bus environments including 24 V-derived rails and brown-out conditions. The 3.5 KB OTP program memory holds full state-machine ladder logic plus Modbus ASCII or RTU framing over the USART without needing external ROM. Designers typically place the part on a backplane with optoisolated I/O and a watchdog timer reset supervisor for fault recovery.
מומלץ
Appliance Motor Control
The PIC16C64A-20/P drives brushed DC and small universal motors in appliances through its Capture/Compare/PWM (CCP) modules and 22 I/O pins. At 20 MHz the part generates PWM frequencies high enough to drive 1 ms switching intervals while leaving CPU headroom for closed-loop control, sensor sampling, and user-interface scanning. The PIC16C6X datasheet's CCP and Timer2 modules support period-and-duty control with hardware interrupt on cycle end, simplifying firmware state machines. Operating from a rectified 5 V or 12 V bus, the wide voltage range and industrial temperature tolerance suit white-goods deployments such as washing machines, dishwashers, and HVAC actuators.
מומלץ
Sensor Data Acquisition Hubs
The PIC16C64A-20/P acts as a sensor hub reading thermistors, RTDs, and 4-20 mA loops, then streaming processed data over the on-chip USART. Its 8-bit ADC (per datasheet) and 22 I/O allow multiplexed analog front-end sampling at rates that satisfy slow-loop SCADA applications. Low-power modes - 1 uA typical at 3 V/32 kHz and 15 uA typical at 5 V/4 MHz - extend battery life in remote, sleep-dominated telemetry nodes. The Harvard bus and deterministic 200 ns instruction cycle keep ADC-to-output latency predictable, simplifying CE/FCC EMC compliance for industrial sensor networks.
מומלץ
Educational and Hobbyist Platforms
The PIC16C64A-20/P's 40-pin PDIP through-hole package is a textbook teaching vehicle for embedded programming courses - breadboard-friendly, easy to socket, and supported by MPLAB X IDE plus PICkit programmers. Its 35-instruction RISC core lets students learn assembly and C development on a deterministic architecture without the complexity of modern peripherals. With 3.5 KB OTP and 128 bytes RAM, the part fits classic exercises like LED chasers, keypad locks, and UART-based PC interfaces. The Microchip PIC16C6X family datasheet includes example code, instruction timing tables, and reference schematics tailored for first-time microcontroller users.
מומלץ
Legacy Embedded System Replacement
Many 1990s-era products use the PIC16C64A-20/P in legacy controllers that must still be supported for service, regulatory, or warranty reasons. Because the part retains the same 40-pin PDIP footprint and pinout as the PIC16C65B, PIC16C74B, and PIC16F74, repair depots can substitute a more readily available alternative without PCB rework. The PIC16C6X family's documented instruction-set compatibility preserves firmware binaries, and peripheral register layouts are largely conserved across the OTP-to-flash generations. This makes the PIC16C64A-20/P's alternatives ideal as service-stock components for industrial, medical, and aerospace legacy equipment.
מומלץ
Low-Power Battery Devices
Battery-powered remote controls, electronic locks, and wireless sensor end nodes benefit from the PIC16C64A-20/P's 1 uA typical sleep current and 15 uA active current at 5 V/4 MHz. The wide 2.5 V to 6.0 V supply range accepts two AA cells (3 V nominal) up through a 9 V battery with a linear regulator. With the on-chip watchdog timer and brown-out reset (per datasheet), the part safely recovers from battery sag without external supervisor ICs. The Harvard architecture and deterministic instruction timing give firmware full control over wake-up intervals, enabling multi-year coin-cell life in low-duty-cycle applications such as remote keyless entry or industrial metering.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C64A-20/P — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16C65B-20/P | PIC16F74-I/P | PIC16C74B-20/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP (P) | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Program Memory | 3.5 KB OTP EPROM | 7.2 KB OTP | 7.2 KB Flash | 4 KB OTP |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM | 128 bytes | 192 bytes | 192 bytes | 192 bytes |
| ADC Resolution | 8-bit | 10-bit | 10-bit | 10-bit |
| I/O Pins | 22 | 33 | 33 | 22 |
| Lifecycle Status | NRND | Active | Active | NRND |
| Memory Type | OTP EPROM | OTP EPROM | Flash | OTP EPROM |
מבדילים עיקריים
- Higher clock speed than predecessor (לעומתPIC16C64A-04I/P)
- Active production status with same package (לעומתPIC16C65B-20/P)
- OTP EPROM for code-modified designs (לעומתPIC16F74-I/P)
הערות תכנון
Estimated: at 5 V supply and 20 MHz oscillator the PIC16C64A-20/P draws 15 mA typical and 35 mA maximum per the PIC16C6X family datasheet; in sleep mode with WDT disabled current drops below 1 uA. Add a 100 nF decoupling capacitor on each VDD pin (pin 20 and pin 39) within 5 mm of the package, plus a 10 uF bulk capacitor on the supply rail. For battery applications select the LP oscillator mode (32 kHz) and disable unused peripherals to achieve 1 uA typical standby current.
Do not leave the MCLR/VPP pin floating; tie it through a 10 kohm pull-up to VDD for normal operation. In-circuit serial programming (ICSP) requires the RB6/PGC and RB7/PGD pins to be free of strong pull-down or large capacitive loads. When migrating from PIC16C64 to PIC16C64A verify ADC configuration bits, interrupt priorities, and peripheral register addresses, which changed in the silicon revision 'A'.
Place the 40-pin PDIP socket centrally on the PCB to keep trace lengths under 50 mm for all I/O lines. Route the crystal/oscillator traces (OSC1, OSC2) symmetrically and within 10 mm of the MCU, with a guard ground plane underneath to reduce EMI. Keep the parallel slave port (PORTD/RE) traces short and matched, or place a 33 ohm series resistor near the MCU to dampen ringing. If the design uses external interrupts on RB0/INT, add a 100 ohm series resistor and a 100 pF capacitor to ground to suppress ESD-induced false triggers.
Estimated: the 40-pin PDIP has pin pitch 2.54 mm and row pitch 15.24 mm. Reserve at least 5 mm of clearance around the socket for IC extraction tools and for through-hole hand-soldering or wave-soldering tooling. Add a clear silkscreen pin-1 marker dot and label VDD/GND on pins 11/31 (or 20/39) for assembly clarity. For EMC-sensitive designs add a ferrite bead on VDD and a small TVS diode on MCLR/VPP to survive 8 kV ESD contact discharge per IEC 61000-4-2.
מידע על תאימות
RoHS status depends on specific date code; original production predates RoHS. Contact Microchip for current compliance documentation. AEC-Q100 not applicable for non-automotive MCU line. Conflict minerals compliant per Microchip policy.
