PIC16C65B-04/P - 8-Bit OTP MCU, 4MHz, 7KB DIP-40 | Microchip
MPN: PIC16C65B-04/P ✓ Hoạt độngPIC16C65B-04/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory, working RAM, and configurable peripherals into one IC. The PIC16CXX mid-range family sits within Microchip's 8-bit PIC architecture hierarchy: 8-bit MCU -> PIC16CXX -> PIC16C6x -> OTP variants. These parts target cost-sensitive embedded applications where Flash reprogrammability is not required and ROM-mask economics do not justify the volume, making OTP the optimal balance between unit cost and prototyping flexibility.
Key features include 35 single-word instructions (most executed in a single 200 ns instruction cycle, with program branches taking two cycles), an operating voltage range of 4.0 V to 5.5 V, 22 I/O pins, and a high-performance RISC CPU designed for deterministic real-time response. The architecture supports direct and indirect addressing modes and a hardware stack for subroutine nesting. The 40-pin PDIP package uses an industry-standard 0.600-inch row spacing with through-hole mounting, simplifying prototyping, breadboarding, and field-replaceable designs.
Typical applications include industrial control systems, motor control front-ends, instrumentation, and legacy embedded designs where the original PIC16C65B-04/P footprint is fixed. The device is also widely used for educational purposes and as a known-good reference part for low-volume manufacturing.
When designing with this part, ensure the device programmer supports the OTP window or production programming; for prototyping, consider the windowed ceramic (JW) variants for UV erasure. The 4 MHz rating indicates the maximum oscillator frequency; ensure the instruction-cycle-sensitive timing budget remains within 200 ns even under branch-heavy code paths.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65B-04/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 PIC16C65B-04/P (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Program Memory Type, Mounting Type, Timers.
PIC16C65B-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65B-20/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65B-10/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65A-20/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F877A-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04/P Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC16CXX mid-range |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| Data RAM | 192 bytes |
| Tần số xung maksimum | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (Vdd) | 4.0 V to 5.5 V |
| I/O Pins | 22 |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Communication Peripherals | USART (SCI), SPI/I2C via SSP |
| CCP Module | Capture / Compare / PWM |
| Hộp | 40-pin PDIP (Plastic DIP, 0.600 in) |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Instruction Set | 35 single-word RISC instructions |
| Architecture | 8-bit RISC, Harvard |
| Kiểu lắp đặt | Through-Hole (DIP) |
Cấu hình chân PIC16C65B-04/P
| Chân 1 | MCLR — Master Clear (reset) input, active low |
| Chân 2 | RA0 — PORTA bit 0 (digital I/O) |
| Chân 3 | RA1 — PORTA bit 1 (digital I/O) |
| Chân 4 | RA2 — PORTA bit 2 (digital I/O) |
| Chân 5 | RA3 — PORTA bit 3 (digital I/O) |
| Chân 6 | RA4 — PORTA bit 4 (digital I/O, open-drain) |
| Chân 7 | RA5 — PORTA bit 5 (digital I/O) |
| Chân 8 | RE0 — PORTE bit 0 (digital I/O) |
| Chân 9 | RE1 — PORTE bit 1 (digital I/O) |
| Chân 10 | RE2 — PORTE bit 2 (digital I/O) |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1 — Oscillator input |
| Chân 14 | OSC2 — Oscillator output |
| Chân 15 | RC0 — PORTC bit 0 (digital I/O, Timer2 clock input) |
| Chân 16 | RC1 — PORTC bit 1 (digital I/O, CCP1 input/output) |
| Chân 17 | RC2 — PORTC bit 2 (digital I/O, CCP1 output) |
| Chân 18 | RC3 — PORTC bit 3 (digital I/O, SPI/I2C clock) |
| Chân 19 | RD0 — PORTD bit 0 (digital I/O, PSP data) |
| Chân 20 | RD1 — PORTD bit 1 (digital I/O, PSP data) |
| Chân 21 | RD2 — PORTD bit 2 (digital I/O, PSP data) |
| Chân 22 | RD3 — PORTD bit 3 (digital I/O, PSP data) |
| Chân 23 | RC4 — PORTC bit 4 (digital I/O, SPI/I2C data) |
| Chân 24 | RC5 — PORTC bit 5 (digital I/O, SPI data out) |
| Chân 25 | RC6 — PORTC bit 6 (digital I/O, USART TX) |
| Chân 26 | RC7 — PORTC bit 7 (digital I/O, USART RX) |
| Chân 27 | RD4 — PORTD bit 4 (digital I/O, PSP data) |
| Chân 28 | RD5 — PORTD bit 5 (digital I/O, PSP data) |
| Chân 29 | RD6 — PORTD bit 6 (digital I/O, PSP data) |
| Chân 30 | RD7 — PORTD bit 7 (digital I/O, PSP data) |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RB0 — PORTB bit 0 (digital I/O, external interrupt) |
| Chân 34 | RB1 — PORTB bit 1 (digital I/O) |
| Chân 35 | RB2 — PORTB bit 2 (digital I/O) |
| Chân 36 | RB3 — PORTB bit 3 (digital I/O) |
| Chân 37 | RB4 — PORTB bit 4 (digital I/O, interrupt-on-change) |
| Chân 38 | RB5 — PORTB bit 5 (digital I/O, interrupt-on-change) |
| Chân 39 | RB6 — PORTB bit 6 (digital I/O, interrupt-on-change, ICSP clock) |
| Chân 40 | RB7 — PORTB bit 7 (digital I/O, interrupt-on-change, ICSP data) |
Ứng dụng tiêu biểu
PIC16C65B-04/P phù hợp cho 6 Áp dụngs: Industrial Control Systems, Motor Control and PWM Drive, Instrumentation and Data Acquisition, Legacy Embedded System Maintenance, Educational and Development Platforms, Security and Access Control Devices.
Industrial Control Systems
The PIC16C65B-04/P fits industrial control front-ends thanks to its 22 I/O pins driving relays and sensors, 4 MIPS deterministic execution for real-time control loops, and 7 KB OTP securing proprietary control algorithms against reverse engineering. With USART and CCP peripherals it can manage motor-control PWM and sensor feedback simultaneously. The 4.0-5.5V supply matches 5V industrial rails directly, eliminating level shifters.
Được đề xuất
Motor Control and PWM Drive
The PIC16C65B-04/P drives small DC and stepper motors using its Capture/Compare/PWM (CCP) module generating precise PWM signals at up to 4 MHz instruction rate. The 200 ns cycle provides fine-grained duty-cycle resolution for smooth torque control. Timer2 sets the PWM period while the CCP handles compare events, freeing the CPU for feedback loop calculation. The 22 I/O lines support quadrature encoder inputs and H-bridge enable signals.
Được đề xuất
Instrumentation and Data Acquisition
The PIC16C65B-04/P serves as a data-acquisition controller with its USART for serial data uplink, Timer1 16-bit capture for precise event timestamping, and 22 digital I/O lines for multiplexer control. With 7 KB OTP and 192 bytes RAM, the MCU can buffer moderate sample sets before transmission. The 4 MIPS throughput handles sensor polling at hundreds of Hz without processor bottleneck.
Được đề xuất
Legacy Embedded System Maintenance
The PIC16C65B-04/P is the OEM-specified replacement for maintaining installed-base equipment originally designed around PIC16C65B silicon. Its identical pinout and OTP security preserves backward compatibility with deployed firmware. The 40-pin PDIP simplifies field replacement without board rework, and Microchip's active lifecycle status confirms continued availability for long-life industrial and aerospace sustainment programs.
Được đề xuất
Educational and Development Platforms
The PIC16C65B-04/P in 40-pin PDIP is widely used in university embedded-systems curricula thanks to its through-hole mounting on breadboards and standard 0.600-inch pin spacing. The 35-instruction RISC set is approachable for first-time MCU learners, and the documented peripheral set (Timers, USART, CCP) covers core embedded concepts. OTP programming teaches production deployment discipline in academic lab settings.
Được đề xuất
Security and Access Control Devices
The PIC16C65B-04/P's OTP memory provides inherent security against firmware extraction once programmed, making it suitable for access-control panels, alarm systems, and electronic locks where code must resist tampering. The 22 I/O lines interface with keypads, magnetic-stripe readers, and relay outputs, while the USART enables logging to a central controller. OTP bit security prevents cloning of the access-control algorithm.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65B-04/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 | PIC16C65B-04I/P | PIC16C65B-20/P | PIC16C65B-10/P | PIC16C65A-20/P | PIC16F877A-I/P |
|---|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 14 KB Flash |
| Max Clock Speed | 4 MHz | 4 MHz | 20 MHz | 10 MHz | 20 MHz | 20 MHz |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 368 bytes |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C (industrial) |
| Memory Type | OTP | OTP | OTP | OTP | OTP | Flash (reprogrammable) |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 33 |
Bảo phân biệt quan trọng
- Industrial temperature grade option available in identical footprint (vsPIC16C65B-04I/P)
- Multiple speed grades on identical silicon (vsPIC16C65B-10/P, PIC16C65B-20/P)
- Direct Flash-based migration path with same pinout (vsPIC16F877A-I/P)
Ghi chú thiết kế
The PIC16C65B-04/P operates from 4.0 V to 5.5 V and requires both VDD pins (11 and 32) tied together and both VSS pins (12 and 31) tied to ground. According to the Microchip datasheet, decoupling must include a 0.1 uF ceramic capacitor placed within 6 mm of each VDD pin, plus a bulk 10 uF tantalum or aluminum electrolytic on the supply rail. Brown-out detection is not available on this part; use an external voltage supervisor (e.g., MCP100 or MCP130) for failsafe reset if the application can experience supply droop below 4.0 V.
The 40-pin PDIP package uses 0.600-inch row spacing with 0.100-inch pin pitch, compatible with standard 40-pin DIP sockets and breadboards. According to the datasheet, the oscillator pins (OSC1/OSC2) should be kept short and shielded from high-current switching traces to minimize EMI coupling. Place a ground plane under the crystal and load capacitors; route MCLR with a short trace and add a 10 kohm pull-up to VDD per datasheet recommendations for reliable reset behavior.
OTP programming requires a device programmer (e.g., MPLAB PM3) and cannot be erased after programming. According to Microchip, the -04 speed grade is rated at 4 MHz maximum, so configuring the oscillator for 10 MHz or 20 MHz will violate AC timing specs and may cause unreliable execution. For development cycles, use the JW (windowed ceramic) variant or migrate to PIC16F877A-I/P for Flash reprogrammability. The parallel slave port (PORTD/PORTE) requires TRIS configuration in software before use; forgetting this is a common cause of bus contention.
The PIC16C65B-04/P in PDIP-40 has a thermal resistance (theta_JA) of approximately 50 C/W in still air. At maximum operating current (~30 mA active, 5 mA sleep) and 5 V supply, power dissipation is 150 mW worst case, producing a 7.5 C junction temperature rise. The commercial 0-70C rating is comfortable for typical industrial enclosures. For sealed enclosures above 60 C ambient, derate to the industrial -04I/P variant or add a small clip-on heatsink on the DIP body.
Thông tin tuân thủ
RoHS/REACH compliance status not explicitly stated in verified web data. PIC16C65B-04/P is not AEC-Q100 qualified (industrial -04I/P variant exists for harsher environments). Conflict-minerals compliance inferred from Microchip's published CMRT declarations.
