PIC18F4525T-I/ML - 48KB Flash, 40MHz 8-bit MCU TQFP-44 | Microchip
부품 번호: PIC18F4525T-I/ML ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $9.45 | $9.45 |
| 10 | $8.55 | $85.50 |
| 100 | $7.42 | $742.00 |
| 500 | $6.61 | $3,305.00 |
| 1,000 | $5.8 | $5,800.00 |
PIC18F4525T-I/ML 개요
A PIC18 microcontroller is a 16-bit instruction-word, 8-bit data-path MCU built around an enhanced Harvard architecture, combining separate program and data buses with a RISC instruction set. PIC18 devices sit in the hierarchy: PIC18 family -> PIC microcontrollers -> 8-bit microcontrollers -> microcontrollers (MCUs) -> semiconductors. Within Microchip's lineup, the PIC18F family is the mainstream "high performance" tier, positioned above PIC16F and below the 16-bit dsPIC and 32-bit PIC32 families. nanoWatt Technology (a Microchip trademark) refers to dynamic power-management modes that lower active and sleep current for battery-aware designs.
Key features of the PIC18F4525 include 256 bytes of EEPROM, two 8-bit and three 16-bit timers, two analog comparators, a USART, an MSSP (Master Synchronous Serial Port) configurable for SPI or I2C, two capture/compare/PWM modules, and nanoWatt power management. The 10-bit ADC provides up to 13 input channels depending on package, supporting industrial sensor interfacing at modest conversion rates.
Typical applications include industrial automation controllers, motor control front-ends (using PWM and timers), automotive body and chassis subsystems (non-safety), consumer appliances, HVAC control boards, USB-to-UART bridging (with on-chip USART), and sensor hubs requiring analog and digital I/O. The wide 4.2 V to 5.5 V supply range and 40 MHz throughput position it well for 5 V-tolerant industrial designs. The industrial temperature grade of -40 C to +85 C (I-suffix) supports uncontrolled environments, and the TQFP-44 footprint with exposed pad simplifies PCB layout for thermal dissipation and ground integrity. The "T" suffix denotes tape-and-reel packaging for high-volume assembly. When designing, engineers should match Vdd decoupling (100 nF + 10 uF recommended) and reserve MCLR pin handling for in-circuit serial programming and reset robustness.
드롭인 대체품: PIC18F4525T-I/ML — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18F4525T-I/ML (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature, Program Memory (Flash), Capture/Compare/PWM, Maximum CPU Speed.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18F4525T-I/PT
✅ 드롭인✓ 재고 있음
$5.95 / 개
데이터시트 보기 →PIC18F4525-I/ML
✅ 드롭인✓ 재고 있음
$5.02 / 개
데이터시트 보기 →PIC18F4525T-E/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F4520-I/ML
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F4620T-I/ML
✅ 드롭인✓ 재고 있음
$3.78 / 개
데이터시트 보기 →PIC18F4523T-I/ML
✅ 드롭인✓ 재고 있음
$4.41 / 개
데이터시트 보기 →PIC18F4525T-I/ML 최대 정격 & 전기적 특성
| Device Family | PIC18F |
| Core | 8-bit PIC18 RISC (Harvard) |
| Program Memory Type | Enhanced Flash |
| Program Memory Size | 48 KB |
| Data RAM | 3,968 bytes (3968 B) |
| EEPROM | 256 bytes |
| Maximum Clock Speed | 40 MHz |
| Supply Voltage (Vdd) | 4.2 V to 5.5 V |
| I/O Pins | 36 |
| 패키지 | TQFP-44 (ML) - QFN-EP |
| ADC | 10-bit, up to 13 channels |
| Timers | 2 x 8-bit + 3 x 16-bit |
| PWM Modules | 2 (CCP) |
| Communication Interfaces | USART (1), MSSP - SPI/I2C (1) |
| Analog Comparators | 2 |
| 동작 온도 | -40 C to +85 C (Industrial) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Packaging Form | Tape and Reel (T-suffix) |
PIC18F4525T-I/ML 핀 구성
| 핀 1 | MCLR/RE3 — Master Clear (reset) input or digital I/O RE3 |
| 핀 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| 핀 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| 핀 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| 핀 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| 핀 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 핀 7 | RA5/AN4/SS/LVDIN — PORTA bit 5 / analog input 4 / SPI slave select / LVD input |
| 핀 8 | Vss — Ground |
| 핀 9 | OSC1/CLKI/RA7 — Oscillator input / external clock input / PORTA bit 7 |
| 핀 10 | OSC2/CLKO/RA6 — Oscillator output / clock output / PORTA bit 6 |
| 핀 11 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output / Timer1/3 clock input |
| 핀 12 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| 핀 13 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| 핀 14 | RC3/SCL/SCK — PORTC bit 3 / I2C clock / SPI clock |
| 핀 15 | RC4/SDA/SDI — PORTC bit 4 / I2C data / SPI data in |
| 핀 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| 핀 17 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| 핀 18 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| 핀 19 | Vss — Ground |
| 핀 20 | VDD — Positive supply voltage |
| 핀 21 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / PWM fault input |
| 핀 22 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| 핀 23 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| 핀 24 | RB3/INT3/CCP2 — PORTB bit 3 / external interrupt 3 / CCP2 |
| 핀 25 | RB4 — PORTB bit 4 (interrupt-on-change) |
| 핀 26 | RB5 — PORTB bit 5 (interrupt-on-change) |
| 핀 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 핀 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| 핀 29 | Vss — Ground |
| 핀 30 | VDD — Positive supply voltage |
| 핀 31 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| 핀 32 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| 핀 33 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| 핀 34 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| 핀 35 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| 핀 36 | RD5/PSP5/P1B — PORTD bit 5 / PSP bit 5 / PWM1 output B |
| 핀 37 | RD6/PSP6/P1C — PORTD bit 6 / PSP bit 6 / PWM1 output C |
| 핀 38 | RD7/PSP7/P1D — PORTD bit 7 / PSP bit 7 / PWM1 output D |
| 핀 39 | Vss — Ground |
| 핀 40 | VDD — Positive supply voltage |
| 핀 41 | RE0/RD — PORTE bit 0 / parallel slave port read |
| 핀 42 | RE1/WR — PORTE bit 1 / parallel slave port write |
| 핀 43 | RE2/CS — PORTE bit 2 / parallel slave port chip select |
| 핀 44 | EP — Exposed thermal pad (must be soldered to PCB ground plane) |
일반적인 애플리케이션
PIC18F4525T-I/ML 적합 용도: 6 애플리케이션s: Industrial Automation Controllers, Automotive Body Electronics (Non-Safety), Consumer Appliances and HVAC Control, USB-to-UART Bridge / Serial Adapter, Sensor Hub / Data Acquisition Front-End, Motor Control / PWM Front-End.
Industrial Automation Controllers
The PIC18F4525T-I/ML is well suited for industrial automation controllers thanks to its 40 MHz core delivering 10 MIPS throughput, 36 digital I/O pins, and a 10-bit ADC with up to 13 analog channels. In motor-control and PLC-style I/O boards, it reads sensor inputs, drives relays and contactors, and orchestrates PID loops using the two CCP/PWM channels. The 48 KB Flash and 3,968 bytes of RAM support the application code, state machines, and Modbus RTU stacks; the on-chip USART and MSSP enable RS-485 and I2C field-bus connectivity. The 4.2 V to 5.5 V supply range interfaces directly with 5 V industrial logic, and the -40 C to +85 C industrial temperature grade tolerates factory-floor ambient swings. Best practice: decouple Vdd with 100 nF + 10 uF near the IC, place the exposed pad on a continuous ground copper pour, and reserve MCLR through a 10 kohm pull-up for in-circuit serial programming during factory bring-up.
추천
Automotive Body Electronics (Non-Safety)
The PIC18F4525T-I/ML is a strong fit for automotive body-electronics modules where AEC-Q100 is not required, including interior lighting controllers, HVAC panel drivers, seat controllers, and accessory switching. The 36 I/O pins handle multiplexed LED drivers and switch matrices; the two CCP/PWM channels generate dimming signals with hardware precision. The on-chip 10-bit ADC reads thermistors, position sensors, and current-sense amplifiers for closed-loop control. Although this part targets industrial -40 C to +85 C operation, Microchip offers the PIC18F4525T-E/ML "E" grade for extended -40 C to +125 C temperature under-hood locations. The 40 MHz core provides real-time response for CAN-style messaging over MCP2515 plus USART, and the 48 KB Flash supports OBD-style diagnostics and service routines.
추천
Consumer Appliances and HVAC Control
White-goods appliances such as washing machines, dishwashers, refrigerators, and HVAC thermostats benefit from the PIC18F4525T-I/ML's combination of 48 KB Flash, 3,968 bytes of RAM, and on-chip EEPROM for storing user preferences. The PIC18 core's deterministic 4T instruction cycle and 10 MIPS throughput at 40 MHz give responsive user-interface handling for keypad scanning, LCD multiplexing, and rotary-encoder decoding via the timers. The 10-bit ADC reads thermistor and humidity-sensor inputs for closed-loop temperature control, while the two CCP/PWM channels drive TRIAC or MOSFET gate drivers for compressor, blower, and heater regulation. The MSSP (SPI or I2C) interfaces with EEPROM, RTC, and display drivers over a single two-wire bus, reducing pin consumption and PCB area.
추천
USB-to-UART Bridge / Serial Adapter
The PIC18F4525T-I/ML is frequently used in low-cost USB-to-UART bridge designs paired with the Microchip MCP2200 or MCP2221 USB-to-UART bridge ICs, or implemented in software using the MSSP peripheral. The 40 MHz core delivers reliable bit-banged USB-LS at 12 Mbps with adequate timing margin when paired with the on-chip USART and timers. The 48 KB Flash fits the USB stack, HID class, or CDC ACM class firmware comfortably, and the 3,968 bytes of RAM handle endpoint buffers and protocol state machines. The 36 I/O pins expose handshake signals (RTS/CTS/DTR/DSR) plus status LEDs, while 256 bytes of EEPROM store VID/PID, serial number, and configuration. The 4.2 V to 5.5 V supply aligns with USB VBUS levels.
추천
Sensor Hub / Data Acquisition Front-End
Data-acquisition front-ends for industrial sensor hubs and portable instrumentation leverage the PIC18F4525T-I/ML's 10-bit ADC, 36 I/O, and dual CCP/PWM channels for stimulus generation. The 10-bit resolution is sufficient for thermistor, strain-gauge, and LDR sensor readout at sub-1 mV precision, while the 13 ADC channels multiplex multiple sensor inputs sequentially. The MSSP/SPI bus connects to external 16/24-bit sigma-delta ADCs for higher-resolution upgrade paths, and the USART streams data to a host processor or Bluetooth module. The 48 KB Flash supports calibration tables and DSP-style digital filtering in firmware. The 256-byte EEPROM stores calibration coefficients persistently, and nanoWatt Technology reduces idle current for battery-powered sensor hubs.
추천
Motor Control / PWM Front-End
Small motor-control and stepper-driver boards use the PIC18F4525T-I/ML as a logic front-end, with the on-chip CCP/PWM channels generating center-aligned PWM at up to 40 MHz peripheral clock resolution. The 10 MIPS throughput executes commutation tables and FOC algorithms in real time for brushed DC, BLDC, and stepper motors up to several hundred watts. The 36 I/O pins handle Hall-sensor inputs, encoder feedback, fault inputs, and gate-driver controls. The two analog comparators provide hardware overcurrent protection with sub-microsecond response. The 48 KB Flash and 3,968 bytes of RAM fit small motor-control state machines without external memory, and the 4.2 V to 5.5 V supply is compatible with most gate-driver ICs and 5 V logic. nanoWatt Technology reduces standby current during motor idle.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18F4525T-I/ML — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18F4525T-I/PT | PIC18F4525-I/ML | PIC18F4525T-E/ML | PIC18F4520-I/ML | PIC18F4620T-I/ML | PIC18F4523T-I/ML |
|---|---|---|---|---|---|---|---|
| Package | TQFP-44 (ML) | TQFP-44 (PT) - same 44-pin TQFP | TQFP-44 (ML) - same | TQFP-44 (ML) - same | TQFP-44 (ML) - same | TQFP-44 (ML) - same | TQFP-44 (ML) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 48 KB | 48 KB | 48 KB | 48 KB | 32 KB | 64 KB | 32 KB |
| Data RAM | 3,968 bytes | 3,968 bytes | 3,968 bytes | 3,968 bytes | 1,536 bytes | 3,968 bytes | 3,968 bytes |
| Max Clock Speed | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit (12-bit variant on 4523) |
주요 차별점
- Largest memory variant in PIC18F452x pin-compatible family (vs PIC18F4523T-I/ML)
- Drop-in migration to 64 KB Flash for growth (vs PIC18F4620T-I/ML)
- Cost-down migration when less memory is sufficient (vs PIC18F4520-I/ML)
- Extended-temperature sibling available on identical footprint (vs PIC18F4525T-E/ML)
설계 노트
Decouple each Vdd pin (pins 11, 32, 40) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a shared 10 uF bulk capacitor on the same node. The exposed thermal pad (pin 44) MUST be soldered to a continuous ground copper pour (typically 8 thermal vias to the inner ground plane) to achieve the rated thermal performance. Keep crystal traces (OSC1/OSC2) short and guarded with a ground trace to minimize EMI and ensure stable 40 MHz operation.
Estimate: with all 36 I/O pins sourcing 20 mA (worst-case), total supply current can approach 200 mA plus core current; design Vdd traces for at least 250 mA. Enable the nanoWatt Technology sleep modes (Idle, Sleep) when the application is idle - Sleep current drops to microampere levels with the RTCC, WDT, or external interrupt wake sources. Use the brown-out reset (BOR) feature to disable operation below 4.2 V to avoid Flash corruption during supply droops.
Common pitfalls: (1) The MCLR pin requires a 10 kohm pull-up to Vdd; floating MCLR leads to erratic reset behavior. (2) In-Circuit Serial Programming (ICSP) pins RB6/PGC and RB7/PGD must be accessible on the PCB for field firmware updates; do not wire them to outputs that conflict with the programming tool. (3) The analog reference VREF+/VREF- should be bypassed with 100 nF + 10 uF capacitors when used in ADC precision applications; do not leave these pins floating if unused. (4) Configuration bits must be set for the chosen oscillator mode (HS for high-frequency crystal, RC for cost-sensitive) before code execution.
When using the MSSP peripheral in SPI mode at higher clock rates, keep MOSI/MISO/SCK traces under 50 mm and route them over a continuous ground plane to avoid reflections. Series resistors of 33 ohm at the source end dampen ringing. For I2C, the SDA/SCL lines require 4.7 kohm pull-ups (Fast mode) or 2.2 kohm pull-ups (Fast-mode Plus) - undersized pull-ups cause rise-time violations at 400 kHz.
규정 준수 정보
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F4525T-E/ML for extended automotive temperature range. Microchip parts comply with REACH SVHC declaration obligations.
