PIC16C65B-04I/P - 8-Bit 4MHz 7KB OTP MCU 40-PDIP | Microchip
MPN: PIC16C65B-04I/P ✓ Hoạt độngPIC16C65B-04I/P Tóm tắt
Background: A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and integrated peripherals. PIC microcontrollers from Microchip employ a Harvard RISC architecture with separate program and data buses, which allows single-cycle instruction execution (except program branches, which take two cycles). The PIC16C mid-range family — the lineage to which the PIC16C65B belongs — provides a low-cost entry point with a 14-bit instruction word, 35 single-word instructions, and a peripheral-rich architecture that targets embedded control applications from appliance timers to industrial sensor interfaces.
Key features of the PIC16C65B-04I/P include its OTP EPROM-based program memory (one-time programmable, ideal for mature production designs), a wide operating voltage range from 2.5V to 6.0V, low-power consumption (typical 15 uA at 5V/4 MHz and 1 uA at 3V/32 kHz), a high-performance RISC CPU with only 35 instructions to learn, and a fully static design that allows clock frequencies down to DC. The 4 MHz maximum clock speed makes this part the lowest-speed member of the PIC16C65B family (compared to 10 MHz and 20 MHz variants) and is typically selected for cost-sensitive, low-speed control loops.
Typical applications for the PIC16C65B-04I/P include industrial sensor conditioning front-ends, appliance controllers (washing machines, microwave ovens, HVAC), automotive body electronics (non-safety subsystems), instrumentation with analog sensor inputs, and legacy embedded designs that require OTP memory and a parallel slave port for inter-MCU communication. The integrated 8-bit ADC simplifies designs that read potentiometers, temperature sensors, or analog transducers directly.
When designing with the PIC16C65B-04I/P, note that OTP memory is one-time-programmable and cannot be erased; for prototyping and field-upgradable designs consider a Flash-based PIC16F6x or PIC18F equivalent in the same PDIP-40 footprint. Industrial temperature rating (-40C to +85C) is suitable for outdoor enclosures and factory environments. Always confirm oscillator configuration and watchdog timer settings in MPLAB before committing to OTP programming.
This page synthesizes distributor pricing, drop-in alternatives in the same 40-PDIP package, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65B-04I/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-04I/P (cùng hình factor và footprint) — khác nhau ở Timers, Program Memory Type, Package, Mounting Type, Program Memory Size.
PIC16C65B-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04E/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65AT-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04I/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C Mid-Range 8-bit RISC |
| Program Memory Size | 7 KB (4K x 14) OTP EPROM |
| RAM Size | 192 bytes |
| CPU Speed | 4 MHz maximum |
| Supply Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 33 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Serial Interfaces | 1x SSP (SPI/I2C), 1x USART |
| Parallel Slave Port | Yes (8-bit) |
| ADC | 8-channel, 8-bit |
| Hộp | 40-pin PDIP (0.600 in, 15.24 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Instruction Cycle | 1 cycle (4 clocks), 2 cycles for branches |
| Kiểu lắp đặt | Through-hole (PDIP) |
| Cấp MSL | Not applicable (through-hole) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16C65B-04I/P
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| Chân 5 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI Slave Select |
| Chân 7 | RE0/RD/AN5 — Port E bit 0 / Parallel Slave Port read / Analog input 5 |
| Chân 8 | RE1/WR/AN6 — Port E bit 1 / Parallel Slave Port write / Analog input 6 |
| Chân 9 | RE2/CS/AN7 — Port E bit 2 / Parallel Slave Port CS / Analog input 7 |
| Chân 10 | VDD — Positive supply voltage (2.5V to 6.0V) |
| Chân 11 | VSS — Ground reference |
| Chân 12 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 13 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 14 | MCLR/VPP — Master clear (reset) / programming voltage input |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 I/O |
| Chân 17 | RC2/CCP1 — Port C bit 2 / CCP1 I/O |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SSP SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port data bit 0 |
| Chân 20 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port data bit 1 |
| Chân 21 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port data bit 2 |
| Chân 22 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port data bit 3 |
| Chân 23 | RC4/SDI/SDA — Port C bit 4 / SSP SPI data in / I2C data |
| Chân 24 | RC5/SDO — Port C bit 5 / SSP SPI data out |
| Chân 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Chân 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port data bit 4 |
| Chân 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port data bit 5 |
| Chân 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port data bit 6 |
| Chân 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port data bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage (2.5V to 6.0V) |
| Chân 33 | RB0/INT — Port B bit 0 / External interrupt input |
| Chân 34 | RB1 — Port B bit 1 |
| Chân 35 | RB2 — Port B bit 2 |
| Chân 36 | RB3 — Port B bit 3 |
| Chân 37 | RB4 — Port B bit 4 |
| Chân 38 | RB5 — Port B bit 5 |
| Chân 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — Port B bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC16C65B-04I/P phù hợp cho 6 Áp dụngs: Industrial Sensor Conditioning, Appliance Control (Washing Machine / Microwave / HVAC), Automotive Body Electronics (Non-Safety), Test and Measurement Instrumentation, Legacy Embedded Designs / Parallel-Port Inter-MCU, Power Management and Battery Monitoring.
Industrial Sensor Conditioning
The PIC16C65B-04I/P fits industrial sensor-conditioning front-ends because its 8-channel 8-bit ADC handles up to 8 analog transducers (thermistors, strain gauges, pressure sensors) while the 33 I/O pins drive status LEDs and digital isolators. With 7KB OTP for calibration tables and linearization curves, plus industrial -40C to +85C rating for factory-floor operation, the part simplifies PLC analog-input modules. At 4 MHz the CPU performs a full ADC read and filter loop in under 100 microseconds, fast enough for 1 kHz sensor sampling.
Được đề xuất
Appliance Control (Washing Machine / Microwave / HVAC)
White-goods controllers are a classic application for the PIC16C65B-04I/P, where its OTP memory suits mature high-volume production, the integrated USART connects to inverter boards, and the PWM modules drive motor triac control. The 33 I/O pins handle keypad scanning, 7-segment display multiplexing, and relay drivers from a single MCU. Industrial temperature rating supports unheated laundry-room or garage installations. At 4 MHz, scan loops and debounce routines run well within the few-millisecond response budget of user-interface updates.
Được đề xuất
Automotive Body Electronics (Non-Safety)
Non-safety body-electronics modules such as seat controllers, mirror adjusters, and HVAC blend doors can use the PIC16C65B-04I/P at 4 MHz to manage multiple analog inputs (position potentiometers) and PWM outputs (motor drivers). The SSP peripheral supports SPI communication with dashboard master MCUs, and the parallel slave port enables high-throughput data exchange with cluster processors. Industrial -40C to +85C rating covers cabin environments; for under-hood modules consider PIC16C65B-04E/P with extended temperature.
Được đề xuất
Test and Measurement Instrumentation
Bench-top instruments benefit from the PIC16C65B-04I/P's 8-bit ADC (for direct measurement of analog front-ends), USART (for SCPI command parsing from a host PC), and 33 I/O pins (for front-panel button matrix and rotary encoder inputs). The 7KB OTP stores calibration constants, instrument state-machine code, and serial protocols. Low 15 uA active current at 5V/4 MHz keeps thermal budget manageable in enclosed instrument cases, while the parallel slave port enables shared-bus architectures with a DSP or FPGA co-processor.
Được đề xuất
Legacy Embedded Designs / Parallel-Port Inter-MCU
Designs that use the PIC16C65B-04I/P's 8-bit parallel slave port for inter-MCU data exchange — a pattern common in 1990s industrial controllers — can continue using this part for maintenance and refurbishment of legacy equipment. Two PIC16C65B chips can exchange a full byte in one instruction cycle over the parallel port, enabling shared-memory or mailbox architectures between a host controller and a co-processor. Industrial temperature rating suits factory retrofit environments.
Được đề xuất
Power Management and Battery Monitoring
Battery monitoring boards use the PIC16C65B-04I/P's 8-channel ADC to sample cell voltages, charge current, and temperature sensors, while the CCP/PWM modules drive balancing FETs in multi-cell battery packs. The 4 MHz clock supports periodic ADC sweeps every few milliseconds with the MCU sleeping between conversions for low average current draw. OTP memory holds cell-chemistry lookup tables (Li-ion, NiMH, lead-acid) and protection thresholds that never change in production.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65B-04I/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-04/P | PIC16C65B-04E/P | PIC16C65B-04E/PQ | PIC16C65A-04I/P | PIC16C65AT-04I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-PDIP (0.600 in) | 40-PDIP (0.600 in) - same | 40-PDIP (0.600 in) - same | 40-PDIP (0.600 in) - same | 40-PDIP (0.600 in) - same | 40-PDIP carrier - same |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 8-ch 8-bit | 8-ch 8-bit | 8-ch 8-bit | 8-ch 8-bit | 8-ch 8-bit | 8-ch 8-bit |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Bảo phân biệt quan trọng
- Extended temperature range option in same footprint (vsPIC16C65B-04E/P)
- Industrial temperature rating vs commercial (vsPIC16C65B-04/P)
- Tape-and-reel carrier variant for high-volume assembly (vsPIC16C65AT-04I/PT)
Ghi chú thiết kế
OTP (One-Time-Programmable) EPROM memory cannot be erased after programming. Unlike Flash-based PIC16F variants, code bugs locked into OTP cannot be fixed without replacing the chip. Always validate firmware on a Flash-equipped PIC16F65-04I/P (pin-compatible) or PIC18F45K22 substitute before committing the final firmware to OTP parts for production.
The PIC16C65B-04I/P typically draws 15 uA at 5V/4 MHz and 1 uA at 3V/32 kHz per the datasheet. For battery-powered designs using sleep mode, ensure the watchdog timer and brown-out reset are configured correctly to avoid extra current draw. Decoupling VDD with 100 nF ceramic close to pins 11 and 32 (both VSS/VDD pairs) plus 10 uF bulk at the regulator output prevents ADC reference noise from corrupting analog readings.
Place the decoupling capacitor within 5 mm of VDD/VSS pins and keep the crystal oscillator traces short (under 10 mm) and surrounded by a ground pour to reduce EMI pickup. Analog inputs (RA0-RA5, RE0-RE2) should be routed away from the digital switching lines on ports RD and RC to minimize ADC crosstalk. If using the parallel slave port, ensure data-strobe timing matches the master MCU's setup/hold requirements in the datasheet timing diagrams.
Estimated: at 4 MHz and 5V supply, the PIC16C65B-04I/P dissipates approximately 25 mW (5 mA typical active current). The 40-pin PDIP package has theta_JA around 50 C/W, giving a junction-temperature rise of only 1.25 C above ambient at full active load. Thermal management is not a concern in this package, but verify in-system by measuring VDD current during peak ADC + PWM activity to confirm the design margin.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product declaration. Not AEC-Q100 qualified — choose PIC16C65B-04E/PQ or dedicated automotive PIC MCUs for AEC-Q100 applications. Lead-free PDIP package per Microchip manufacturing standards.
