PIC16C64A-10I/P - 10MHz 8-bit OTP MCU 3.5KB | Microchip | DIP-40
MPN: PIC16C64A-10I/P ✗ Cuối đờiPIC16C64A-10I/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and programmable peripherals on one die. Within the broader taxonomy, the PIC16C64A sits in the legacy 8-bit OTP MCU category: MCU -> 8-bit microcontroller -> PIC16 family -> PIC16C6x sub-family (mid-range OTP). The 'C' suffix designates the OTP/EPROM-based program memory variant (not flash), which is a one-time programmable technology historically favored for low-cost, high-volume, mature designs. The '64A' is the pin/peripheral-compatible upgrade to the original PIC16C64 with extended instruction set and lower power consumption.
Key features of the PIC16C64A-10I/P include 3.5KB OTP program memory, 128 bytes RAM, 33 I/O pins, two 8-bit and one 16-bit timer/counter, USART for serial communication, SSP for SPI and I2C, two CCP modules for PWM/capture/compare, an 8-bit parallel slave port for external bus attachment, and a watchdog timer with on-chip RC oscillator. The 10 MHz clock rate delivers 5 MIPS, which is sufficient for slow control loops, human-machine interface polling, and sensor aggregation.
The architecture uses a 14-bit wide instruction word with separate 14-bit program and 8-bit data buses, enabling single-cycle instruction fetch with concurrent data access. The Harvard structure, combined with a 35-instruction RISC set, produces highly deterministic timing essential for interrupt-driven control firmware. The device includes brown-out reset and power-on reset for reliable startup in electrically noisy industrial environments.
Typical applications for this device include industrial control panels, appliance controllers, automotive body electronics (non-safety), HVAC thermostats, simple sensor aggregators with serial uplink, and legacy embedded products that have been in continuous production since the late 1990s. The PDIP-40 package is also widely used in education and breadboard prototyping.
When designing with the PIC16C64A-10I/P, note that OTP memory cannot be erased or rewritten; firmware must be validated on a flash-based sibling (e.g., PIC16F74-I/P in the same 40-pin PDIP) before committing to OTP. Engineers migrating to a flash variant should plan for code-compatibility verification because peripheral registers differ slightly between the PIC16C6x and PIC16F7x families.
This page consolidates distributor stock, parametric alternatives, and drop-in substitution guidance not found in the manufacturer datasheet alone - particularly useful for sustaining legacy designs where the OTP part remains the only BOM-approved option.
Bộ thay thế dễ dàng lắp đặt cho PIC16C64A-10I/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-10I/P (cùng hình factor và footprint) — khác nhau ở Package, Maximum Clock Frequency, Program Memory Type, Timers, Mounting Type.
PIC16C64A-10/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64A-10I/P Tỷ lệ tối đa & tính chất điện
| Core | PIC16 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 x 8 bytes |
| EEPROM Data Memory | None |
| Number of I/O Pins | 33 |
| Tần số xung maksimum | 10 MHz |
| Instruction Cycle Time | 200 ns (5 MIPS at 10 MHz) |
| Supply Voltage Range | 4.0 V to 6.0 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial, 'I' suffix) |
| Hộp / Vỏ | 40-PDIP (0.600 inch / 15.24 mm) |
| Kiểu lắp đặt | Through-Hole (THT) |
| Number of Timers | 3 (Timer0 8-bit, Timer1 16-bit, Timer2 8-bit) |
| Communication Interfaces | USART (SCI), SSP (SPI / I2C), Parallel Slave Port |
| CCP / PWM Modules | 2 CCP modules (Capture / Compare / PWM) |
| ADC Channels | None (no on-chip ADC) |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Brown-out Reset | Yes |
| Instruction Set Size | 35 single-word instructions |
| Cấp MSL | Not applicable (through-hole PDIP) |
Cấu hình chân PIC16C64A-10I/P
| Chân 1 | MCLR/VPP — Master Clear (reset) input / programming voltage input |
| Chân 2 | RA0/AN0 — PORTA bit 0 (digital I/O) |
| Chân 3 | RA1/AN1 — PORTA bit 1 (digital I/O) |
| Chân 4 | RA2/AN2 — PORTA bit 2 (digital I/O) |
| Chân 5 | RA3/AN3/VREF — PORTA bit 3 (digital I/O) |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select |
| Chân 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 9 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator/counter |
| Chân 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 osc / CCP2 |
| Chân 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 18 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Chân 19 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Chân 20 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Chân 21 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Chân 22 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Chân 23 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Chân 24 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Chân 25 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Chân 26 | RE0/RD/AN5 — PORTE bit 0 / read strobe for PSP / analog ch5 |
| Chân 27 | RE1/WR/AN6 — PORTE bit 1 / write strobe for PSP / analog ch6 |
| Chân 28 | RE2/CS/AN7 — PORTE bit 2 / chip select for PSP / analog ch7 |
| Chân 29 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 30 | RB1 — PORTB bit 1 (digital I/O) |
| Chân 31 | RB2 — PORTB bit 2 (digital I/O) |
| Chân 32 | RB3 — PORTB bit 3 (digital I/O) |
| Chân 33 | RB4 — PORTB bit 4 (digital I/O) |
| Chân 34 | RB5 — PORTB bit 5 (digital I/O) |
| Chân 35 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 36 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 37 | VSS — Ground reference |
| Chân 38 | VDD — Positive supply (4.0V to 6.0V) |
| Chân 39 | VSS — Ground reference |
| Chân 40 | VDD — Positive supply (4.0V to 6.0V) |
Ứng dụng tiêu biểu
PIC16C64A-10I/P phù hợp cho 6 Áp dụngs: Industrial Control Panel Logic, Appliance Control (Washing Machines, Ovens), Automotive Body Electronics (Non-Safety), HVAC Thermostat and Zone Controller, Simple Sensor Aggregator with Serial Uplink, Educational Microcontroller Trainer Board.
Industrial Control Panel Logic
The PIC16C64A-10I/P fits industrial control panels because its 33 digital I/O pins can directly drive status LEDs, scan membrane keypads, and control relay coils at 25 mA per pin without external buffers. The 10 MHz clock delivers 5 MIPS, ample for polled button-debounce loops, multiplexed 7-segment display refresh, and Modbus-RTU over the on-chip USART. The 4.0V to 6.0V supply matches 5V industrial backplanes, and the -40C to +85C industrial temperature range survives factory-floor thermal stress. Unlike flash-based successors, the OTP program memory ensures firmware cannot be overwritten by EMI-induced flash corruption in electrically noisy panels.
Được đề xuất
Appliance Control (Washing Machines, Ovens)
White-goods appliance controllers rely on the PIC16C64A-10I/P for motor sequencing, sensor polling, and user-interface handling. The 3.5KB OTP memory holds typical washing-machine state machines, the 128 bytes RAM is enough for run-time status flags, and the 2 CCP modules generate PWM for motor speed control. The OTP-programmed device prevents field tampering with safety-critical firmware - a regulatory plus for IEC 60730 compliant appliances. The 40-pin PDIP through-hole package withstands hand-soldering and wave-soldering production lines used by appliance manufacturers. Brown-out reset and watchdog timer protect against brown-out-induced latch-up common in motor-drive environments.
Được đề xuất
Automotive Body Electronics (Non-Safety)
The PIC16C64A-10I/P appears in legacy automotive body modules such as central locking, mirror control, and seat-position memory. Its -40C to +85C industrial temperature range covers cabin environments (under-hood modules require the +125C 'E' suffix). The 10 MHz throughput is sufficient for LIN-bus emulation via the USART plus timer-driven bit-banging, and the 33 I/O pins handle multiple switch-scan matrices. While the part is not AEC-Q100 qualified, Microchip supplies automotive-grade PIC16F cousins for new designs. The OTP memory prevents warranty-voiding firmware modifications by end users.
Được đề xuất
HVAC Thermostat and Zone Controller
Thermostat designs use the PIC16C64A-10I/P for temperature polling, schedule execution, and HVAC damper/valve actuator control. The 10 MHz clock executes PID control loops at sub-second intervals for stable indoor climate regulation, and the parallel slave port allows the thermostat to expose its LCD controller as a memory-mapped peripheral. The 128 bytes RAM stores schedule entries and setpoint history. Brown-out reset prevents corruption of the OTP-stored schedule table during power glitches. Migrating to PIC16F74-I/P adds an on-chip ADC for direct thermistor readout without an external ADC IC.
Được đề xuất
Simple Sensor Aggregator with Serial Uplink
Remote sensor aggregators use the PIC16C64A-10I/P to poll multiple digital sensors, perform basic averaging or thresholding, and forward results via USART to a host controller or radio module. The 33 I/O pins support up to 30 discrete sensors with margin for SPI/I2C sensor buses via the SSP peripheral. At 10 MHz, the device can service a 9600-baud Modbus link while still executing a 1 kHz sensor scan loop. The OTP memory secures the proprietary sensor-fusion algorithm against reverse engineering. This topology is common in irrigation controllers and environmental monitoring stations.
Được đề xuất
Educational Microcontroller Trainer Board
University embedded-systems courses continue to use the PIC16C64A-10I/P on trainer boards because the 40-pin PDIP is breadboard-friendly, the PIC16 instruction set is well-documented in textbooks, and OTP-programmed devices teach students about one-time-programmable memory constraints. The 10 MHz operation exposes students to real interrupt latency (200 ns instruction cycle, 5-cycle interrupt response), and the parallel slave port demonstrates bus-attached microprocessor emulation. Migrating to PIC16F74-I/P enables in-circuit reprogramming during lab sessions, eliminating the need for an EPROM eraser.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C64A-10I/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-10/PT | PIC16C64A-04I/P | PIC16C64A-04E/PT | PIC16C65B | PIC16F74-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Program Memory Type | OTP EPROM (3.5KB) | OTP EPROM (3.5KB) - same | OTP EPROM (3.5KB) - same | OTP EPROM (3.5KB) - same | OTP EPROM (7KB) - upgrade | Flash (4KB) - migration target |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| Operating Temperature Range | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +85C - same | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| RAM Size | 128 bytes | 128 bytes - same | 128 bytes - same | 128 bytes - same | 192 bytes (+50%) | 192 bytes (+50%) |
| Number of I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same | 33 - same |
| ADC | None | None - same | None - same | None - same | None | 5-channel 8-bit ADC |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active (recommended migration) | Active |
Bảo phân biệt quan trọng
- Same-die tape-and-reel variant available for high-volume assembly (vsPIC16C64A-10/PT)
- Microchip-recommended active OTP migration target (vsPIC16C65B)
- Flash-based drop-in for firmware-development workflows (vsPIC16F74-I/P)
Ghi chú thiết kế
The PIC16C64A-10I/P operates from 4.0V to 6.0V; the 5.0V rail of a typical industrial backplane is the canonical supply. Decouple VDD (pin 11/32) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 10 uF bulk tantalum or aluminum cap on the same node. Brown-out reset is enabled by configuration fuse and trips when VDD falls below approximately 4.0V (typical), preventing code execution from corrupted memory.
Place the 40-pin PDIP with at least 0.1 inch clearance around the device for through-hole assembly and rework. Route the crystal traces (OSC1 pin 8, OSC2 pin 9) with short, symmetric traces to minimize stray capacitance; use a guard ground trace around the crystal to reduce noise injection. The ICSP pins (RB6/RB7 = pins 35/36) should be brought to a 2x3 or 1x6 header for in-system programming without removing the MCU.
OTP (One-Time Programmable) memory cannot be erased or rewritten - a verification failure during production programming means the entire PIC16C64A-10I/P must be discarded. Always validate firmware on a flash-based sibling device (PIC16F74-I/P) before committing to OTP programming. Note that the 33 I/O pins are shared with peripheral functions (USART, SSP, CCP, PSP, analog inputs); configuration of the ADCON1 register or TRIS bits is required before using analog or peripheral functions. MCLR must be pulled high through a 10 kohm resistor; floating MCLR causes spurious resets in noisy environments.
The parallel slave port (PORTD pins 18-25 + PORTE pins 26-28) operates in 8-bit bus mode with read/write/chip-select strobes. Add 10 kohm pull-ups on RE0/RD-bar, RE1/WR-bar, and RE2/CS-bar to prevent spurious bus transactions during MCU reset. The 33 I/O pins have 25 mA source/sink capability - sufficient for LEDs but external buffering is required for high-current loads above 25 mA. Watchdog timer should be enabled in software for unattended industrial deployments.
Thông tin tuân thủ
RoHS compliance for PIC16C64A-10I/P could not be confirmed from the provided Verified Web Data; the part is obsolete (pre-dating current RoHS documentation requirements) and Microchip does not provide a current RoHS declaration on the product page. AEC-Q100 qualification is not applicable because the PIC16C64A family was never released as an automotive-grade part; Microchip's PIC16F1xxx automotive variants exist for that purpose.
