PIC16C72-04E/SS - 8-bit MCU 3.5KB EPROM 22 I/O | Microchip
MPN: PIC16C72-04E/SS ✗ Cuối đờiPIC16C72-04E/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and peripheral interfaces. Within the broader taxonomy, the PIC16C72 belongs to the 8-bit microcontroller category, then to the RISC (Reduced Instruction Set Computer) microcontrollers family, then to the mid-range PIC16Cxx series, and finally to power management and embedded control semiconductors. Microcontrollers are the workhorses of embedded electronics, providing deterministic real-time response at low cost and low power.
Key differentiating features of the PIC16C72-04E/SS include its OTP (One-Time Programmable) EPROM program memory, which allows rapid prototyping and small-to-medium production runs; an integrated 8-bit A/D converter with multiple input channels that eliminates the need for an external ADC IC; an asynchronous serial port (USART/SCI) for communication with PCs, sensors, or other MCUs; and a 22 I/O count with programmable weak pull-ups that reduce BOM cost by eliminating external resistors.
Architecturally, the PIC16C72 uses a Harvard RISC core with a 14-bit instruction word, allowing most instructions to execute in a single cycle. The CMOS process technology yields very low power consumption, making the device suitable for battery-powered or energy-harvesting applications. The integrated peripherals (A/D, USART, timers, capture/compare/PWM) eliminate the need for many external components.
Typical applications include industrial control and sensor interfacing, automotive body electronics, appliance control, low-cost data acquisition, embedded instrumentation, and consumer electronics. The wide operating voltage (2.5 V to 5.5 V) and broad temperature range (-40C to +125C) make it well-suited for harsh-environment and battery-powered systems.
A key design consideration is the EPROM-based program memory: once programmed, the PIC16C72 cannot be electrically erased, so it is best used for production units rather than iterative development. For development cycles, designers should consider the flash-based PIC16F72 (same pinout, same peripherals, in-circuit reprogrammable) as a directly compatible alternative.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet, helping engineers select, source, and design with the PIC16C72-04E/SS more efficiently.
Bộ thay thế dễ dàng lắp đặt cho PIC16C72-04E/SS — 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 PIC16C72-04E/SS (cùng hình factor và footprint) — khác nhau ở Package, ADC, Timers, RoHS Status, Core Architecture.
PIC16C72-04I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F72-I/SS
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Xem tài liệu →PIC16F73-I/SS
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Xem tài liệu →PIC16C72-04E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory | 3.5 KB OTP EPROM |
| Data RAM | 128 bytes |
| Data EEPROM | Not present |
| Tần số xung maksimum | 4 MHz |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 22 |
| ADC | 8-bit, multi-channel |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | Capture / Compare / PWM |
| Serial Interface | USART/SCI (Asynchronous) |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Nhiệt độ hoạt động | -40 C to +125 C (Industrial, "E" suffix) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C72-04E/SS
| Chân 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 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/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM 1 |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 22 | RB1 — PORTB bit 1 |
| Chân 23 | RB2 — PORTB bit 2 |
| Chân 24 | RB3 — PORTB bit 3 |
| Chân 25 | RB4 — PORTB bit 4 |
| Chân 26 | RB5 — PORTB bit 5 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC16C72-04E/SS phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Module, Automotive Body Electronics, Low-Cost Data Acquisition System, Appliance Control Board, Battery-Powered Sensor Node, Embedded Instrumentation Front-End.
Industrial Sensor Interface Module
The PIC16C72-04E/SS fits industrial sensor-interface modules because its integrated 8-bit ADC with multiple input channels directly digitizes analog sensor signals (temperature, pressure, flow) without external ADC hardware, while the USART enables reliable RS-232/RS-485 communication with PLCs or supervisory controllers. At 4 MHz the MCU delivers 4 MIPS, sufficient for digital filtering, calibration, and HART-style protocol framing. With 22 I/O pins, designers can connect multiple sensors plus discrete outputs for relay or solenoid drivers within a single chip. The 2.5 V to 5.5 V range allows direct operation from 24 V industrial bus rails via simple linear regulation, and the extended -40 C to +125 C temperature grade handles factory-floor, outdoor cabinet, and process-plant deployments. Estimated system BOM savings versus discrete ADC + MCU approaches typically reach 30-40 percent.
Được đề xuất
Automotive Body Electronics
The PIC16C72-04E/SS is well-suited to automotive body-electronics modules (window lifters, mirror adjusters, lighting controllers, HVAC blend-door actuators) thanks to its extended -40 C to +125 C temperature grade, integrated 8-bit ADC for sensing motor current and position feedback, and PWM-capable CCP modules for variable-speed motor drive. The 22 I/O count easily accommodates H-bridge enable lines, limit switches, and LIN-bus-style serial interfaces. Operating from 2.5 V to 5.5 V, the part tolerates automotive crank-cold and load-dump events when paired with a TVS-protected 5 V regulator. The OTP EPROM program memory is appropriate for high-volume production where firmware is locked. Estimated quiescent current in sleep is below 1 microampere typical, supporting key-off parasitic-drain budgets on body modules.
Được đề xuất
Low-Cost Data Acquisition System
The PIC16C72-04E/SS serves low-cost multi-channel data-acquisition front-ends because its integrated multi-channel 8-bit ADC, 128-byte RAM, and USART combine into a single-chip digitizer that streams samples to a host PC or display. At 4 MHz the ADC conversion rate supports sub-kHz sampling on multiple channels sequentially, adequate for temperature, voltage, and current logging. The 22 I/O lines allow external multiplexer expansion to 64+ channels for higher-density logging. The wide 2.5 V to 5.5 V supply range supports battery-powered portable loggers (e.g., two AA cells) as well as USB-powered bench instruments. With 3.5 KB EPROM the firmware can include sensor linearization, statistical averaging, and SD-card command framing when paired with an external serial-memory IC.
Được đề xuất
Appliance Control Board
The PIC16C72-04E/SS targets appliance controls (washing machines, dishwashers, microwave ovens, refrigerators) where the integrated ADC reads temperature and water-level sensors, the CCP/PWM outputs drive triac-gate optocouplers or solid-state relays, and the USART interfaces with inverter boards and display modules. The 22 I/O count comfortably handles 7-segment display drive, keypad scanning, and buzzer control alongside the load-driver outputs. The extended -40 C to +125 C grade ensures reliability in oven or compressor-adjacent locations. OTP EPROM is well-matched to appliance production runs of 10k+ units where code-locking is desired. Estimated firmware space at 3.5 KB supports full state-machine control with fault diagnostics, EEPROM emulation in flash-shadow RAM, and serial diagnostic protocols.
Được đề xuất
Battery-Powered Sensor Node
The PIC16C72-04E/SS fits battery-powered wireless sensor nodes because its CMOS RISC core draws microamp-level sleep currents, the integrated ADC handles battery-voltage monitoring and sensor digitization, and the wide 2.5 V to 5.5 V range supports direct operation from 3.6 V lithium-thionyl-chloride or 3.3 V Li-Ion chemistries without boost regulation. The 22 I/O pins accommodate SPI/serial connection to sub-GHz transceivers (e.g., CC1101), external sensor chips, and a low-battery LED indicator. At 4 MHz the MCU wakes, samples, transmits, and returns to sleep within milliseconds, multiplying battery life. The -40 C to +125 C range is essential for outdoor or industrial-environment deployments. Estimated node lifetime with a 2.4 Ah primary cell exceeds 10 years at 1 sample-per-hour duty cycle.
Được đề xuất
Embedded Instrumentation Front-End
The PIC16C72-04E/SS serves as a front-end controller for embedded instrumentation (handheld multimeters, oscilloscope front-ends, signal generators, laboratory data loggers) where its integrated ADC and PWM are paired with external precision op-amps and references to digitize analog signals. The USART streams processed data to a host display or PC interface. The 22 I/O count accommodates rotary-encoder inputs, button matrices, LCD segment drive, and trigger logic. The extended temperature grade supports outdoor and laboratory-environment operation. With 3.5 KB EPROM the firmware fits auto-ranging algorithms, RMS calculation, peak detection, and USB-CDC command handling when paired with a USB-to-serial bridge IC. Estimated measurement throughput supports update rates above 10 samples per second on multiple channels.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C72-04E/SS — 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 | PIC16C72-04I/SS | PIC16F72-I/SS | PIC16F73-I/SS |
|---|---|---|---|---|
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB Flash | 4 KB Flash |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 192 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| ADC | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels |
| I/O Pins | 22 | 22 | 22 | 22 |
| Operating Temperature | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
Bảo phân biệt quan trọng
- Extended temperature grade for harsh-environment deployment (vsPIC16C72-04I/SS)
- EPROM-based lockable firmware for production cost optimization (vsPIC16F72-I/SS)
- Same SSOP-28 footprint as PIC16F72 for development-to-production migration (vsPIC16C72-04/SO (SOIC-28 variant))
Ghi chú thiết kế
The PIC16C72-04E/SS operates from 2.5 V to 5.5 V; estimate the supply current at 4 MHz active mode as approximately 2 mA typical (per datasheet DC characteristics). In sleep mode the part draws less than 1 microampere typical, which is critical for battery-backed designs. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20), with a 10 microfarad bulk capacitor on the supply rail. For noisy industrial environments add a ferrite bead in series with VDD and a TVS diode for transient protection.
The PIC16C72-04E/SS uses OTP EPROM (One-Time Programmable) memory that cannot be electrically erased - once programmed, the part is locked. This makes the PIC16C72 family unsuitable for iterative development; prototypes should use the PIC16F72 (flash-based, same pinout) instead. Configuration bits (fuses) such as the watchdog timer, oscillator mode, and code protection must be set correctly at programming time; incorrect configuration bits can brick the device. The MCLR pin (pin 1) requires a proper reset circuit (10 kohm pull-up to VDD plus 100 nF to ground) for reliable operation.
For the 28-pin SSOP package, route the analog signals (RA0-RA5) away from digital switching traces to minimize ADC noise coupling. Place a ground plane on the layer beneath the MCU and connect all VSS pins (8 and 19) directly to the ground plane with short, wide traces. The oscillator traces (OSC1/OSC2) should be as short as possible and surrounded by ground pour. The MCLR trace should be kept short and routed away from high-current switching nodes to prevent false resets.
The SSOP-28 package has a thermal resistance (theta JA) of approximately 90 C/W. Estimated: at 4 MHz active mode and 5 V supply, the MCU draws approximately 2 mA, dissipating roughly 10 mW. At 25 C ambient, junction temperature rise is only 0.9 C - well within safe limits. In sleep mode at 1 microampere typical, dissipation is negligible. Thermal management is rarely a concern for this part at its low operating power; however, in enclosed high-temperature environments (>85 C ambient), verify junction temperature stays below 125 C maximum.
Thông tin tuân thủ
PIC16C72-04E/SS is a legacy EPROM-based MCU marked obsolete by Microchip. Specific RoHS / REACH compliance status not provided in the verified web data; treat as unknown until confirmed from the manufacturer product page or lot-specific documentation.
