PIC16LC72AT-04I/SO - 8-bit 4MHz MCU, 3.5KB OTP, 28-SOIC | Microchip
부품 번호: PIC16LC72AT-04I/SO ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.65 | $2,650.00 |
PIC16LC72AT-04I/SO 개요
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and programmable peripherals. The PIC16C/LC family uses a Harvard-architecture RISC core optimized for embedded control: 35 single-word instructions, all single-cycle except program branches which take two cycles. The "LC" suffix denotes the low-voltage CMOS variant supporting 3.3V operation, while the "A" suffix denotes an enhanced silicon revision with improved peripherals.
Key features include a 5-channel 8-bit Analog-to-Digital Converter (ADC), synchronous serial port (SSP) supporting SPI and I2C, USART, two 8-bit timers and one 16-bit timer with capture/compare/PWM, and a watchdog timer with its own on-chip RC oscillator. Power-saving features include selectable oscillator options (RC, LP, XT, HS) and a SLEEP mode. The device operates across the industrial temperature range of -40C to +85C.
This part targets cost-sensitive, moderate-performance embedded applications where deterministic real-time response, low power, and small code footprint matter more than raw MIPS. Compared to flash-based PIC16F parts, OTP requires a one-time programmer and is masked out for production; designers typically prototype on the PIC16F72 equivalent and migrate to PIC16LC72A-04I/SO for volume.
Typical applications include appliance controls, sensor interfaces, low-end motor control (small DC fans, solenoids), battery chargers, simple user-interface panels, and consumer electronics. The on-chip ADC and PWM modules are particularly useful for closed-loop control.
When designing with this device, verify the chosen oscillator mode matches the external crystal or resonator, and reserve the MCLR pin for proper reset behavior unless using internal configurations. Production programming requires a compatible OTP programmer since the part cannot be erased by UV light.
드롭인 대체품: PIC16LC72AT-04I/SO — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC16LC72AT-04I/SO (동일 폼 팩터 및 풋프린트) — 차이점: ADC, Package, Timers, Core Architecture, Operating Temperature.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC16LC72A-04I/SO
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16LC72AT-04I/SS
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16LC72A-04I/SP
✅ 드롭인✓ 재고 있음
$1.62 / 개
데이터시트 보기 →PIC16C72A-04I/SO
✅ 드롭인✓ 재고 있음
$3.5 / 개
데이터시트 보기 →PIC16C72-04/SO
✅ 드롭인✓ 재고 있음
$3.45 / 개
데이터시트 보기 →PIC16LC72AT-04I/SO 최대 정격 & 전기적 특성
| Core Architecture | PIC 16C (8-bit RISC, Harvard) |
| Family | PIC16LC72A |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| Data RAM | 128 bytes |
| 최대 클록 주파수 | 4 MHz |
| Instruction Cycle | 200 ns |
| I/O Pins | 22 |
| ADC | 5 channels, 8-bit |
| Timers | 2 x 8-bit, 1 x 16-bit with CCP |
| Communication | SSP (SPI/I2C), USART |
| 공급 전압 | 2.5 V to 5.5 V |
| 동작 온도 | -40C to +85C (Industrial) |
| 패키지 | 28-SOIC (7.50 mm body width, SMD) |
| 실장 유형 | Surface Mount |
PIC16LC72AT-04I/SO 핀 구성
| 핀 1 | RA5/AN4/MCLR/VPP — PORTA bit 5 / Analog input 4 / Master Clear reset / Programming voltage |
| 핀 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| 핀 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| 핀 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| 핀 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / ADC voltage reference |
| 핀 6 | RA4/T0CKI — PORTA bit 4 / Timer 0 clock input |
| 핀 7 | OSC1/CLKIN — Oscillator input / external clock input |
| 핀 8 | OSC2/CLKOUT — Oscillator output / clock output |
| 핀 9 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| 핀 10 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer 1 oscillator input / CCP2 module |
| 핀 11 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| 핀 12 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 핀 13 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 핀 14 | RC5/SDO — PORTC bit 5 / SPI data out |
| 핀 15 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| 핀 16 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| 핀 17 | RB0/INT — PORTB bit 0 / External interrupt |
| 핀 18 | RB1 — PORTB bit 1 |
| 핀 19 | RB2 — PORTB bit 2 |
| 핀 20 | RB3/PGM — PORTB bit 3 / Low-voltage ICSP programming input |
| 핀 21 | RB4 — PORTB bit 4 |
| 핀 22 | RB5 — PORTB bit 5 |
| 핀 23 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 핀 24 | RB7/PGD — PORTB bit 7 / ICSP data |
| 핀 25 | VSS — Ground reference |
| 핀 26 | VDD — Positive supply voltage |
| 핀 27 | NC — Not connected (no internal bond on 28-SOIC variant) |
| 핀 28 | NC — Not connected (no internal bond on 28-SOIC variant) |
일반적인 애플리케이션
PIC16LC72AT-04I/SO 적합 용도: 7 애플리케이션s: Appliance Control Boards, Battery Chargers, Sensor Interface Modules, Low-End Motor Control, User Interface Panels, Consumer Electronics, Automotive Body Electronics (Non-Safety).
Appliance Control Boards
The PIC16LC72AT-04I/SO is well suited for appliance control panels such as washing machines, dishwashers, and microwave ovens. Its 22 I/O pins drive multiplexed LED or LCD displays and read mechanical keypads, while the 5-channel 8-bit ADC monitors temperature sensors (NTC) and water level switches. The 4 MHz clock and 200 ns instruction cycle provide deterministic response for relay and triac control of heating elements, pumps, and door latches. Industrial -40C to +85C operation tolerates the heat near power components, and the OTP program memory locks firmware at production to prevent field tampering.
추천
Battery Chargers
The PIC16LC72AT-04I/SO controls single- and multi-stage battery chargers for cordless tools, e-bikes, and UPS backup systems. The 16-bit CCP module generates PWM to drive a switching MOSFET at fixed frequency, while the ADC samples charge current (via shunt) and battery voltage for closed-loop CC/CV regulation. The 3.5 KB OTP holds charge profiles for Li-ion, NiMH, and lead-acid chemistries. Low-voltage operation down to 2.5V supports direct connection to single-cell lithium packs without additional LDO regulation, simplifying BOM and improving efficiency.
추천
Sensor Interface Modules
Industrial sensor transmitters for pressure, flow, and humidity benefit from the PIC16LC72AT-04I/SO's integrated ADC, USART, and low-power operation. The 8-bit ADC digitizes bridge sensor or thermistor inputs, while the USART outputs 4-20 mA loop signals via an external DAC or PWM-to-current converter. The 2.5-5.5V supply range enables battery or loop-powered designs, and SLEEP mode with watchdog wake-up extends battery life in remote installations. OTP memory prevents firmware modification in the field.
추천
Low-End Motor Control
Small DC brush motors in fans, pumps, and solenoid valves are controlled by the PIC16LC72AT-04I/SO using its 16-bit CCP PWM output and ADC for closed-loop speed or position feedback. The 4 MHz instruction rate delivers 200 ns loop times suitable for trapezoidal commutation in small BLDC motors or PWM dimming of DC loads. Hall-sensor inputs on PORTB trigger interrupts for rotor position detection. The 28-SOIC package fits compact inline motor housings, and industrial temperature rating supports under-hood automotive and appliance environments.
추천
User Interface Panels
User interface panels for HVAC thermostats, security keypads, and consumer remote controls use the PIC16LC72AT-04I/SO to scan key matrices, drive LED or VFD displays, and handle serial communication. The 22 I/O pins comfortably support a 4x4 key matrix plus a 7-segment or character LCD interface. The USART links the panel to a main controller board, and SLEEP mode with interrupt-on-change extends battery life in wireless remotes. OTP locks the user-interface firmware to prevent cloning of proprietary menu structures.
추천
Consumer Electronics
Cost-sensitive consumer products such as remote controls, toys, small kitchen appliances, and personal care devices leverage the PIC16LC72AT-04I/SO's small footprint, low cost, and integrated peripherals. The on-chip ADC reads battery voltage or simple analog inputs, the PWM drives buzzers or LED brightness, and the SSP port connects to peripheral chips over SPI. The 28-SOIC package is friendly to hand-solder prototypes and reflow production alike. OTP memory at $2.65 per unit at qty 1000 keeps bill-of-materials costs low for high-volume consumer goods.
추천
Automotive Body Electronics (Non-Safety)
Non-safety automotive modules such as interior lighting controllers, seat position memory, and accessory timers use the PIC16LC72AT-04I/SO. The industrial -40C to +85C temperature range tolerates cabin environments, and the integrated ADC monitors switch positions and potentiometers. PWM outputs drive LED strings for ambient lighting, while the USART interfaces with the vehicle body control module. For safety-critical applications, migrate to AEC-Q100 qualified PIC16F variants.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC16LC72AT-04I/SO — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC16LC72A-04I/SO | PIC16LC72AT-04I/SS | PIC16LC72A-04I/SP | PIC16C72A-04I/SO | PIC16C72-04/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SSOP | 28-SPDIP | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 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 | 2.5 V to 5.5 V | 4.5 V to 5.5 V (non-LC) | 4.5 V to 5.5 V (non-LC) |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C (commercial, no -I suffix) |
| Shipping Carrier | Tape & Reel | Tube | Tape & Reel | Tube (DIP) | Tube | Tube |
주요 차별점
- Tape-and-reel carrier for SMT production lines (vs PIC16LC72A-04I/SO)
- Low-voltage LC variant supports 2.5V minimum supply (vs PIC16C72A-04I/SO)
- Smaller SSOP footprint option for space-constrained designs (vs PIC16LC72AT-04I/SS)
설계 노트
The PIC16LC72AT-04I/SO operates from 2.5V to 5.5V on the VDD pin (pin 20) with VSS (pin 21) as ground. Place a 0.1 uF decoupling capacitor as close as possible between VDD and VSS to suppress high-frequency noise. For battery applications drawing more than 50 mA peak, add a 10 uF bulk capacitor near the IC. The LC variant's 2.5V minimum enables direct connection to a single Li-ion cell without an LDO, reducing BOM cost and quiescent current loss.
Place the 28-SOIC footprint with pin 1 indicator matched to the silkscreen dot. Keep crystal or resonator traces (OSC1 pin 7, OSC2 pin 8) short, less than 5 mm if possible, and route them away from high-current switching traces to avoid injecting oscillator noise. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD if not used as a digital input. Use a 100 ns reset pulse width minimum; place any reset capacitor within 5 mm of MCLR.
OTP memory cannot be erased by UV light - once programmed, the device is permanent. Engineers should always prototype with the flash-based PIC16F72-I/SO (same pinout and peripherals) and only migrate to the PIC16LC72A-04I/SO for production. Configuration bits must be set correctly for the oscillator mode; an incorrect LP/XT/HS selection can prevent oscillator startup. Brown-out reset must be enabled in CONFIG to protect against voltage dips below the 2.5V minimum.
When using the ADC, the analog inputs AN0-AN4 share pins with PORTA. Configure unused analog pins as digital outputs to minimize injection current into the ADC sample-and-hold. Use the VREF pin (RA3) only when an external reference is required; otherwise connect A/D reference to VDD. Sample acquisition time is governed by TACQ = (TAMP + TC + TCOEF) per the datasheet; for 4 MHz oscillator, allow at least 20 us acquisition time for 10 kohm source impedance.
규정 준수 정보
RoHS and lead-free compliant per Microchip product page; not AEC-Q100 qualified - choose PIC16F72 automotive variant for vehicle applications. Industrial temperature grade -40C to +85C (I suffix).
