PIC16C64A-10/P - 8-Bit 10MHz OTP MCU 3.5KB DIP-40 | Microchip
MPN: PIC16C64A-10/P ✗ Cuối đờiPIC16C64A-10/P Tóm tắt
What is a microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals. Within the broader taxonomy, the PIC16C64A sits in the 8-bit MCU class (8-bit -> microcontroller -> embedded processor -> semiconductor). Its RISC core uses only 35 single-word instructions, making it friendly for assembly and C developers. OTP memory allows the device to be programmed once and retained for the life of the product.
Key features include five 8-bit I/O ports, three hardware timers, a USART, a synchronous serial port (SSP) supporting SPI/I2C, an 8-bit parallel slave port, and dual analog comparators. The instruction set executes every instruction in a single cycle except program branches (two cycles), which keeps interrupt latency predictable. Power consumption is approximately 15 µA typical at 5V/4 MHz and as low as 1 µA at 3V/32 kHz, enabling battery-friendly designs.
The PIC16C64A architecture uses Harvard memory buses - separate program and data paths - so instruction fetch and operand access occur in one cycle. This contrasts with Von Neumann MCUs that share a bus. The wide operating range (commercial/industrial/extended temperature) and windowed ceramic variants make the family useful in both production deployments and engineering development where UV-erasable versions speed iteration.
Typical applications include industrial control boards, motor drive front-ends, smart sensor interfaces, and legacy consumer electronics. Designers value the PIC16C64A-10/P for its deterministic timing, mature toolchain (MPASM, MPLAB), and pin compatibility with newer flash-based siblings such as the PIC16F74.
When designing with this part, reserve a 4.7 kΩ pull-up on MCLR and decouple VDD with a 100 nF plus 10 µF bulk capacitor near the package. Because the OTP memory cannot be erased, verify firmware in a windowed (JW) ceramic variant or a flash-based sibling during development before committing to OTP for volume.
Bộ thay thế dễ dàng lắp đặt cho PIC16C64A-10/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 PIC16C64A-10/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, Maximum Clock Frequency, Core Architecture, MSL Level.
PIC16C64A-10I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-10/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F46K22-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-10/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| RAM Size | 128 bytes |
| Tần số xung maksimum | 10 MHz |
| Instruction Execution Time | 200 ns (single cycle) |
| Instruction Set Size | 35 single-word instructions |
| Supply Voltage Range | 4.0 V to 6.0 V |
| Digital I/O Pins | 33 |
| I/O Ports | 5 x 8-bit (PORTA-PORTE, partial) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication Peripherals | USART, SSP (SPI/I2C), Parallel Slave Port |
| Analog Comparators | 2 |
| Hộp | 40-pin PDIP (0.600", 15.24 mm) |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Kiểu lắp đặt | Through-Hole |
| Cấp MSL | 1 (unlimited) |
Cấu hình chân PIC16C64A-10/P
| Chân 1 | MCLR — Master Clear (Reset) input, active low |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / voltage reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / analog input 4 |
| Chân 8 | OSC1/CLKIN — Oscillator input / external clock in |
| Chân 9 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 12 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Chân 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 14 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Chân 15 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Chân 16 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Chân 17 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Chân 18 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Chân 19 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Chân 20 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Chân 21 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Chân 22 | VSS — Ground |
| Chân 23 | VDD — Positive supply (4.0V-6.0V) |
| Chân 24 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 25 | RB1 — PORTB bit 1 |
| Chân 26 | RB2 — PORTB bit 2 |
| Chân 27 | RB3 — PORTB bit 3 |
| Chân 28 | RB4 — PORTB bit 4 |
| Chân 29 | RB5 — PORTB bit 5 |
| Chân 30 | RB6 — PORTB bit 6 |
| Chân 31 | RB7 — PORTB bit 7 |
| Chân 32 | VSS — Ground |
| Chân 33 | VDD — Positive supply |
| Chân 34 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 35 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 36 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Chân 37 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Chân 38 | RE0/RD — PORTE bit 0 / Parallel Slave Port read control |
| Chân 39 | RE1/WR — PORTE bit 1 / Parallel Slave Port write control |
| Chân 40 | RE2/CS — PORTE bit 2 / Parallel Slave Port chip select |
Ứng dụng tiêu biểu
PIC16C64A-10/P phù hợp cho 6 Áp dụngs: Industrial Control Boards, Motor Drive Front-End, Smart Sensor Interface, Legacy Consumer Electronics, HVAC Control Modules, Security Keypads and Access Panels.
Industrial Control Boards
The PIC16C64A-10/P fits legacy industrial control boards because its 10 MHz clock and 200 ns instruction cycle provide deterministic timing for PLC scan loops, while the 33 digital I/O lines drive relays, optocouplers, and indicator LEDs directly. The wide 4.0V-6.0V supply tolerates unregulated 5V industrial rails, and the USART plus SSP peripherals communicate with sensor front-ends and operator panels. Designers value the PIC16C64A's predictable interrupt latency for time-critical interlocks. For new industrial designs, the flash-based PIC16F74-I/P is preferred for in-field firmware updates.
Được đề xuất
Motor Drive Front-End
In motor drive front-ends, the PIC16C64A-10/P generates PWM signals, reads Hall-effect sensors, and manages direction logic for brushed DC and small stepper motors. The three hardware timers (Timer0/1/2) handle PWM generation and tachometer capture, while the parallel slave port connects to a host motion controller for trajectory updates. Its 4.0V-6.0V operation aligns with 5V gate driver supplies, simplifying PCB layout. The OTP memory locks firmware against field tampering, which matters for OEM-locked motor control modules. Migrate to PIC16F74-I/P if in-field firmware updates are required.
Được đề xuất
Smart Sensor Interface
The PIC16C64A-10/P serves as a smart sensor interface reading multiple analog signals through its two analog comparators and digitizing via the parallel slave port, then forwarding data via USART or SPI to a host processor. The 200 ns instruction cycle samples sensors at rates suitable for vibration and temperature monitoring. Low-power modes (1 µA typical at 3V/32 kHz) extend battery life in remote sensor nodes. The OTP memory is ideal for fixed-function sensor modules where firmware never changes. Pair with the PIC16C64A-10I/P variant for outdoor temperature extremes.
Được đề xuất
Legacy Consumer Electronics
The PIC16C64A-10/P powers legacy consumer products such as washing machine controllers, microwave user interfaces, and small appliance displays, where its 33 I/O lines drive 7-segment displays, keypads, and buzzer circuits. The mature MPLAB toolchain and MPASM assembler reduce firmware development risk for products with decade-long lifecycles. OTP memory prevents end-user firmware modification, protecting OEM IP. Designers maintaining such products often stock the PIC16C64A-10/P for board-level repairs because firmware-compatible replacements are scarce.
Được đề xuất
HVAC Control Modules
HVAC control modules use the PIC16C64A-10/P for thermostat signal processing, fan speed control via PWM, and communication with indoor/outdoor unit boards over UART. The industrial temperature variant (PIC16C64A-10I/P) is preferred for outdoor unit boards exposed to -40C conditions. The 33 I/O lines handle multiple thermistor inputs, relay outputs, and LED indicators without external I/O expanders. Its deterministic interrupt response ensures clean zero-crossing detection for TRIAC-based load switching, critical for HVAC efficiency.
Được đề xuất
Security Keypads and Access Panels
Access control panels deploy the PIC16C64A-10/P for keypad scanning, RFID reader interfacing via SPI, and door strike relay control. The OTP memory secures authentication firmware against extraction, important for security applications. The USART links to a central access controller over RS-485, while the parallel slave port connects to a 4x4 or 4x5 matrix keypad with low BOM cost. The 10 MHz clock supports debounce algorithms with predictable timing. Modern designs should consider the PIC16F74-I/P for firmware update capability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C64A-10/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 | PIC16C64A-10I/P | PIC16C64A-04I/P | PIC16F74-I/P | PIC16C65B-10/P | PIC18F46K22-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-40 | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 7 KB Flash | 7 KB OTP | 64 KB Flash |
| Maximum Clock | 10 MHz | 10 MHz | 4 MHz | 20 MHz | 10 MHz | 64 MHz |
| Supply Voltage | 4.0V to 6.0V | 4.0V to 6.0V | 4.0V to 6.0V | 2.0V to 5.5V | 4.0V to 6.0V | 1.8V to 5.5V |
| Temperature Range | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C |
| Memory Type | OTP | OTP | OTP | Flash | OTP | Flash |
| Lifecycle Status | NRND | NRND | NRND | Active | NRND | Active |
Bảo phân biệt quan trọng
- Industrial temperature variant available in identical package (vsPIC16C64A-10I/P)
- Flash-based successor with active production (vsPIC16F74-I/P)
- Microchip-recommended upgrade path with more peripherals (vsPIC16C65B-10/P)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 11 and 32 on the 40-pin PDIP), and add a single 10 µF bulk tantalum or aluminum electrolytic cap on the supply rail. The PIC16C64A's wide 4.0V-6.0V operating range tolerates unregulated 5V industrial rails, but supply noise above 50 mV can couple into the analog comparator reference - route analog VDD through a ferrite bead if precision analog readings are needed. Estimated: at 10 MHz clock and 5V supply, core current is approximately 5-10 mA typical, well within the package dissipation limits.
Keep the OSC1/OSC2 traces short and surrounded by a ground pour to minimize EMI. If using a crystal, place load capacitors (typically 15-33 pF) within 5 mm of the oscillator pins. The MCLR pin (pin 1) requires a 4.7 kΩ pull-up to VDD and a 100 nF capacitor to ground for noise immunity - omitting this capacitor is a common cause of spurious resets in industrial environments. Avoid routing digital signals under the IC body to prevent coupling into the substrate.
OTP memory is one-time programmable - any code bug locks the part permanently. For prototype development, use the windowed ceramic (JW) variant or the flash-based PIC16F74-I/P, then port the validated firmware to OTP for production. Watch the configuration word: an incorrect oscillator selection or watchdog timer setting can render the device unresponsive. Brown-out reset (BOR) is not enabled by default; configure it explicitly if operating near the 4.0V supply minimum.
The PDIP-40 package has a junction-to-ambient thermal resistance of approximately 70 C/W. At typical 10 MHz/5V operation with 33 I/O switching, total power dissipation is under 100 mW, keeping junction rise below 7C above ambient - no heatsink required. Estimated: worst-case I/O sink current (25 mA per pin on PORTB, 20 mA per pin on PORTA/PORTC/PORTD/PORTE) can push dissipation above 500 mW if all pins sink max current simultaneously; derate accordingly in dense designs.
Thông tin tuân thủ
PIC16C64A-10/P is a vintage OTP part from the 1990s. RoHS compliance status not explicitly stated in the verified web data - vintage Microchip PIC16C OTP parts typically contain lead and are non-RoHS. Verify with manufacturer before use in RoHS-restricted designs.
