PIC16LC72-04I/SO - 8-Bit CMOS MCU 3.5KB ROM 22 I/O | Microchip
MPN: PIC16LC72-04I/SO ✓ Hoạt độngPIC16LC72-04I/SO Tóm tắt
A PIC16CXX mid-range microcontroller is a low-cost, high-performance, fully-static, 8-bit CMOS device built around Microchip's RISC architecture, sitting hierarchically under PIC16 family -> PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded processing IC. These MCUs integrate CPU core, non-volatile program memory, RAM, peripherals, and interrupt logic on a single die, which makes them suitable for compact, low-power embedded designs where an external processor is unnecessary.
Key features include 14-bit wide instruction set for compact code density, hardware USART for serial communication, dual-capture/compare/PWM modules for motor and signal control, power-on reset, brown-out reset, watchdog timer with on-chip RC oscillator, and code-protection EPROM. The 4 MHz maximum clock rate and 2.5 V minimum VDD enable battery-friendly designs.
The PIC16LC72-04I/SO uses a Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. Its CMOS RISC core executes most instructions in a single cycle (200 ns at 20 MHz, 1 us at 4 MHz), supporting predictable real-time performance for control loops. The integrated analog peripherals and digital communication interfaces reduce system BOM cost by eliminating the need for external ADC and bus transceivers in many embedded designs.
Typical applications include industrial process control, automotive sensor modules, instrumentation, low-power remote sensing, and consumer electronics. The SSP and USART peripherals enable drop-in use in Modbus, sensor front-end, and motor drive designs.
When designing with this part, note that the LC (low-power) variant supports a lower VDD minimum (2.5 V) than the standard C variant (3.0 V minimum), so check your battery cutoff behavior carefully. For new designs, consider PIC16F72 flash variants for in-circuit reprogrammability.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC72-04I/SO — 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 PIC16LC72-04I/SO (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Timers, ADC, Core.
PIC16LC72A-04I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC72-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F72-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC716T-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC711-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC72-04I/SO Tỷ lệ tối đa & tính chất điện
| Core | PIC16CXX mid-range, 8-bit RISC |
| Instruction Width | 14-bit |
| Program Memory | 3.5 KB (2K x 14) EPROM |
| RAM | 128 bytes |
| Data EEPROM | Not present (ROM variant) |
| Tần số xung maksimum | 4 MHz (-04 speed grade) |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| I/O Pins | 22 |
| A/D Converter | 8-bit, 5 channels |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Capture/Compare/PWM | CCP module x1 (enhanced CCP variant) |
| Serial Interfaces | USART + SSP (SPI / I2C) |
| Interrupt Sources | Up to 8 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 28-pin SOIC (SO) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
| ROM Type | EPROM (one-time programmable windowed) |
Cấu hình chân PIC16LC72-04I/SO
| Chân 1 | RA0/AN0 — BidirPOR A0 / Analog input 0 |
| Chân 2 | RA1/AN1 — BidirPOR A1 / Analog input 1 |
| Chân 3 | RA2/AN2/VREF- — BidirPOR A2 / Analog input 2 / ADC negative reference |
| Chân 4 | RA3/AN3/VREF+ — BidirPOR A3 / Analog input 3 / ADC positive reference |
| Chân 5 | RA4/T0CKI — BidirPOR A4 / Timer0 clock input |
| Chân 6 | RA5/AN4/SS — BidirPOR A5 / Analog input 4 / SPI slave select |
| Chân 7 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Chân 8 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Chân 9 | RC0/T1OSO/T1CKI — BidirPOR C0 / Timer1 oscillator output / Timer1 clock input |
| Chân 10 | RC1/T1OSI/CCP2 — BidirPOR C1 / Timer1 oscillator input / CCP2 |
| Chân 11 | RC2/CCP1 — BidirPOR C2 / CCP1 PWM output |
| Chân 12 | RC3/SCK/SCL — BidirPOR C3 / SPI clock / I2C clock |
| Chân 13 | RC4/SDI/SDA — BidirPOR C4 / SPI data in / I2C data |
| Chân 14 | RC5/SDO — BidirPOR C5 / SPI data out |
| Chân 15 | RC6/TX/CK — BidirPOR C6 / USART TX / USART clock |
| Chân 16 | RC7/RX/DT — BidirPOR C7 / USART RX / USART data |
| Chân 17 | VSS — Ground reference |
| Chân 18 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Chân 19 | RB0/INT — BidirPOR B0 / external interrupt |
| Chân 20 | RB1 — BidirPOR B1 |
| Chân 21 | RB2 — BidirPOR B2 |
| Chân 22 | RB3 — BidirPOR B3 |
| Chân 23 | RB4 — BidirPOR B4 |
| Chân 24 | RB5 — BidirPOR B5 |
| Chân 25 | RB6/PGC — BidirPOR B6 / ICSP clock |
| Chân 26 | RB7/PGD — BidirPOR B7 / ICSP data |
| Chân 27 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 28 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC72-04I/SO phù hợp cho 6 Áp dụngs: Industrial Process Control, Automotive Sensor Modules, Low-Power Remote Sensing, Consumer Appliance Control, Instrumentation and Test Equipment, HVAC Control Module.
Industrial Process Control
The PIC16LC72-04I/SO is well-suited to industrial process control PLC-style I/O modules, where its 22 GPIO pins, 5-channel 8-bit ADC, and USART enable local sensor conditioning and fieldbus communication. The 4 MHz clock and 1 us instruction cycle support deterministic PID loop rates in the 10 kHz range, while the 2.5-5.5 V VDD allows direct 5 V industrial backplane operation. Industrial temperature grade (-40C to +85C) handles harsh factory floor conditions. EPROM code protection prevents tampering with proprietary control logic.
Được đề xuất
Automotive Sensor Modules
In automotive sensor clusters, the PIC16LC72-04I/SO handles local A/D conversion of up to 5 analog sensors (e.g., temperature, pressure, position) and LIN-bus framing via the USART. The 2.5 V minimum VDD supports crank-to-start battery sag conditions, and the 4 MHz clock is sufficient for sampling 5 channels at 1 kHz with software averaging. The EPROM code space holds small fixed calibration tables; the 128 B RAM accommodates short moving-window filters. Industrial temperature grade handles under-hood thermal stress to +85C.
Được đề xuất
Low-Power Remote Sensing
The PIC16LC72-04I/SO fits battery-powered remote telemetry nodes where its 2.5 V minimum VDD enables use with two AA cells down to 2.7 V nominal. The Timer1 16-bit counter can be clocked during sleep via an external 32.768 kHz crystal, providing accurate timekeeping for periodic A/D wakeup sampling. The 5-channel ADC directly reads soil moisture, battery voltage, and temperature sensors. The SSP peripheral drives SPI sensors, and the low-power CMOS core draws minimal current in sleep mode.
Được đề xuất
Consumer Appliance Control
Household appliance control boards (washing machines, dishwashers, microwave ovens) use the PIC16LC72-04I/SO to drive user keypads, read rotary encoders, and control triac-driven loads via its CCP PWM module. The 22 I/O pins directly interface with seven-segment displays and buzzer drivers. The 4 MHz clock and 1 us instruction cycle support fast display refresh and zero-crossing triac timing. The USART enables diagnostics port communication during factory test.
Được đề xuất
Instrumentation and Test Equipment
Benchtop instruments such as multimeters, signal generators, and bench PSU controllers use the PIC16LC72-04I/SO for local front-panel control: the 5-channel ADC measures current and voltage, the USART provides PC serial-port interface for remote control scripts. The 3.5 KB EPROM holds fixed calibration constants. The 8 interrupts handle real-time zero-crossing detection, ADC end-of-conversion, and USART receive events at the 1 us instruction-cycle rate without jitter.
Được đề xuất
HVAC Control Module
HVAC zone controllers and thermostat boards use the PIC16LC72-04I/SO to read multiple thermistor inputs via the 5-channel 8-bit ADC, drive TRIAC-controlled fan and compressor loads via the CCP PWM, and communicate with central controllers via the SSP or USART. The 22 I/O interface with keypad, LCD, and relay drivers. The industrial -40C to +85C temperature range handles attic and outdoor equipment locations. The 2.5 V minimum VDD is useful for 24 VAC rectified supply designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC72-04I/SO — 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 | PIC16LC72A-04I/SO | PIC16LC72-04/SO | PIC16F72-I/SO | PIC16LC716T-04I/SO | PIC16LC711-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) | 28-SOIC (SO) | 28-SOIC (SO) | 28-SOIC (SO) | 28-SOIC (SO) |
| Program Memory | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM | 3.5 KB Flash | 8 KB EPROM | 1.75 KB EPROM |
| RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 68 B |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| A/D Converter | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 4 channels | 8-bit, 4 channels |
| Code Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | Flash | OTP EPROM | OTP EPROM |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- A-step silicon with errata fixes (vsPIC16LC72A-04I/SO)
- Industrial temperature grade (vsPIC16LC72-04/SO)
- EP-ROM code protection (vsPIC16F72-I/SO)
Ghi chú thiết kế
Estimated: Brown-out reset threshold is configurable; the default BOR voltage on PIC16LC72-04I/SO at 4 MHz is approximately 4.0 V (configurable to 2.5 V, 3.5 V, or 4.0 V via configuration word). For 3.3 V battery operation, configure BOR for 2.5 V to avoid premature resets during high-load transients. Add a 100 nF ceramic decoupling capacitor as close as possible to VDD pin 18, plus a bulk 10 uF tantalum on the same node for transient handling.
The 'LC' suffix in PIC16LC72-04I/SO indicates the low-voltage variant (2.5 V minimum VDD), not the standard PIC16C72 (3.0 V minimum). Designers migrating from PIC16C72-04I/SO to PIC16LC72-04I/SO must verify analog reference voltage and brown-out trip points at 3.0 V operation. Also note that PIC16LC72-04I/SO OTP-EPROM cannot be erased in-circuit on the SO package; use the CERDIP windowed variant for development and the SO OTP variant for production.
Place the 4 MHz crystal or resonator within 5 mm of pins 7 and 8 (OSC1/OSC2) and keep the trace lengths matched and short. Avoid routing digital switching signals (RB6/RB7 ICSP, PWM outputs on RC2) directly under the crystal traces to minimize capacitive coupling. Reserve an ICSP header footprint for programming even on production boards - OTP parts cannot be socket-programed.
Thông tin tuân thủ
RoHS and REACH status not stated in verified web data. PIC16LC72-04I/SO is an older Microchip part; the SOIC OTP variant was typically produced in lead-free / RoHS-compliant versions during the mid-2000s onward. AEC-Q100 is not applicable as this is not an automotive-qualified part.
