PIC18F452-I/L - 8-bit 40MHz 32KB Flash MCU | Microchip 44-PLCC
Артикул: PIC18F452-I/L ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $10.23 | $10,23 |
| 10 | $9.45 | $94,50 |
| 100 | $8.55 | $855,00 |
| 500 | $7.62 | $3.810,00 |
| 1.000 | $6.85 | $6.850,00 |
PIC18F452-I/L Обзор
A microcontroller is a single-chip computer that combines a CPU, memory, and programmable peripherals. The PIC18F452 belongs to the 8-bit MCU class within the broader microcontroller hierarchy (8-bit MCU -> MCU -> embedded processor -> semiconductor). Its enhanced PIC18 core offers 77 single-word instructions and C-compiler-friendly architecture, making it popular for both educational and industrial designs.
Key features include eight channels of 10-bit analog-to-digital conversion, two capture/compare/PWM modules, an MSSP configurable as SPI or I2C, a USART, an ICD (in-circuit debugger) interface, and self-programming flash. Operating voltage spans 4.2 V to 5.5 V, and the device supports nanoWatt power management for low-power applications.
The architecture is a Harvard-type RISC design with a 16-bit instruction word and an 8-bit data path, allowing 100 ns instruction execution at 40 MHz. The wide operating range and rich peripheral set make it suitable for industrial automation, motor control, sensor conditioning, and consumer products requiring deterministic real-time response without an external DSP.
Typical applications include industrial control panels, HVAC systems, motor-control boards, USB-to-serial bridges with an external interface IC, and instrumentation front-ends. Designers value the PIC18F452 for upward code compatibility with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX devices.
A key design consideration is the operating voltage: the 'I' suffix denotes an industrial temperature range of -40 C to +85 C and 4.2 V to 5.5 V supply. Designers migrating to the 'LF' variant must account for the 2.0 V to 5.5 V extended range.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, supporting faster BOM decisions and supply-chain risk mitigation for the PIC18F452-I/L.
Аналоги без доработки для PIC18F452-I/L — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC18F452-I/L (тот же форм-фактор и посадочное место) — отличается по Package, Operating Temperature, Timers, Mounting Type, Core Architecture.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC18F452-E/L
✅ Прямая замена✓ В наличии
$8.4 / шт.
Открыть даташит →PIC18F452T-I/L
✅ Прямая замена✓ В наличии
$3.88 / шт.
Открыть даташит →PIC18F448-I/L
✅ Прямая замена✓ В наличии
$11.5 / шт.
Открыть даташит →PIC18F458-I/L
✅ Прямая замена✓ В наличии
$4.79 / шт.
Открыть даташит →PIC18F442-I/L
✅ Прямая замена✓ В наличии
$3.75 / шт.
Открыть даташит →PIC18F452-I/L Максимальные параметры и электрические характеристики
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Максимальная тактовая частота | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data SRAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 34 |
| Напряжение питания | 4.2 V to 5.5 V |
| Диапазон рабочих температур | -40 C to +85 C (Industrial) |
| Analog-to-Digital Converter | 10-bit, 8 channels |
| Capture/Compare/PWM Modules | 2 CCP |
| Serial Interfaces | MSSP (SPI / I2C), USART |
| Timers | 1 x 8-bit, 3 x 16-bit |
| Корпус | 44-pin PLCC (16.59 x 16.59 mm) |
| Тип монтажа | Surface Mount (PLCC socket compatible) |
| Instruction Set | 77 single-word instructions |
| Self-Programming / ICD | Yes |
| Power-Saving Modes | nanoWatt technology |
Конфигурация выводов PIC18F452-I/L
| Контакт 1 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Контакт 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Контакт 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 4 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Контакт 5 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator output |
| Контакт 6 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator input |
| Контакт 7 | VSS — Ground reference |
| Контакт 8 | VDD — Positive supply (5 V) |
| Контакт 9 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Контакт 10 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Контакт 11 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Контакт 12 | RB3/CCP2 — PORTB bit 3 / CCP2 output |
| Контакт 13 | RB4 — PORTB bit 4 |
| Контакт 14 | RB5/PGM — PORTB bit 5 / LVP programming |
| Контакт 15 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Контакт 16 | RB7/PGD — PORTB bit 7 / ICSP data |
| Контакт 17 | VSS — Ground reference |
| Контакт 18 | VDD — Positive supply (5 V) |
| Контакт 19 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator |
| Контакт 20 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| Контакт 21 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Контакт 22 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Контакт 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Контакт 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Контакт 27 | VSS — Ground reference |
| Контакт 28 | VDD — Positive supply (5 V) |
| Контакт 29 | RD0/PSP0 — PORTD bit 0 / Parallel slave port 0 |
| Контакт 30 | RD1/PSP1 — PORTD bit 1 / Parallel slave port 1 |
| Контакт 31 | RD2/PSP2 — PORTD bit 2 / Parallel slave port 2 |
| Контакт 32 | RD3/PSP3 — PORTD bit 3 / Parallel slave port 3 |
| Контакт 33 | RD4/PSP4 — PORTD bit 4 / Parallel slave port 4 |
| Контакт 34 | RD5/PSP5 — PORTD bit 5 / Parallel slave port 5 |
| Контакт 35 | RD6/PSP6 — PORTD bit 6 / Parallel slave port 6 |
| Контакт 36 | RD7/PSP7 — PORTD bit 7 / Parallel slave port 7 |
| Контакт 37 | VSS — Ground reference |
| Контакт 38 | VDD — Positive supply (5 V) |
| Контакт 39 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Контакт 40 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Контакт 41 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Контакт 42 | VSS — Ground reference |
| Контакт 43 | VDD — Positive supply (5 V) |
| Контакт 44 | MCLR/VPP — Master clear reset / Programming voltage |
Типичное применение
PIC18F452-I/L подходит для 6 применениеs: Industrial Control Panels, HVAC Climate Control Boards, Motor Control Drive Boards, Instrumentation Front-Ends, USB-to-Serial Bridge Bridges, Consumer Appliance Controllers.
Industrial Control Panels
The PIC18F452-I/L is widely deployed in industrial control panels where its 34 I/O pins, 8 channels of 10-bit ADC, and 4.2-5.5 V supply range align directly with 24 V-sourced 5 V industrial rails. The 10 MIPS throughput supports real-time polling of sensor inputs, debounce logic, and PWM-driven relay or indicator outputs. Its 256-byte EEPROM stores calibration constants that survive power-cycle events, while self-programming flash enables field firmware updates without removing the MCU from the panel.
Рекомендуется
HVAC Climate Control Boards
HVAC controller boards leverage the PIC18F452-I/L's 8-channel ADC to read multiple temperature and pressure sensors simultaneously, while its two CCP modules generate PWM signals for fan-speed control and damper actuation. The 32 KB flash accommodates lookup-table-based climate curves and scheduling algorithms, and the nanoWatt power-saving modes reduce standby consumption in thermostat-style products operating from a 5 V wall adapter.
Рекомендуется
Motor Control Drive Boards
The PIC18F452-I/L drives small brushless DC and stepper motor boards via its two CCP/PWM channels, complemented by three 16-bit timers for quadrature encoder feedback and commutation sequencing. Its 40 MHz operation yields 100 ns instruction execution, enabling deterministic commutation loops at typical 20 kHz PWM frequencies without software jitter. The 5 V supply aligns directly with logic-level gate drivers commonly used in low-voltage motion subsystems.
Рекомендуется
Instrumentation Front-Ends
Bench-top instrumentation uses the PIC18F452-I/L as a controller for signal conditioning, range selection, and display driving. The 10-bit ADC provides 1024-step resolution suitable for digital multimeters and panel meters, while the MSSP peripheral interfaces with serial ADCs or DACs that demand higher precision. The 1536-byte SRAM supports circular buffers for waveform capture or data-logging applications in test equipment.
Рекомендуется
USB-to-Serial Bridge Bridges
When paired with an external USB-serial interface IC such as the FT232R or MCP2200, the PIC18F452-I/L functions as the protocol conversion controller for legacy RS-232 equipment. Its USART module handles asynchronous serial communication, while flash-resident command interpreters expose the bridge to host PCs. The 32 KB flash holds USB-class descriptor templates and any vendor-specific command sets required by the legacy peripheral.
Рекомендуется
Consumer Appliance Controllers
Small kitchen and white-goods appliances embed the PIC18F452-I/L for user-interface multiplexing, sensor reading, and actuator PWM. Its 34 I/O pins drive 7-segment displays, keypad matrices, and indicator LEDs, while the ADC monitors thermistors, level sensors, and current-sensing shunts. The industrial temperature grade supports under-cabinet installation where ambient temperatures can approach 80 C during operation.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC18F452-I/L — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC18F452-E/L | PIC18F452T-I/L | PIC18F448-I/L | PIC18F458-I/L | PIC18F442-I/L |
|---|---|---|---|---|---|---|
| Package | 44-PLCC (16.59x16.59 mm) | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same | 44-PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | PIC18 (8-bit) | PIC18 (8-bit) | PIC18 (8-bit) | PIC18 (8-bit) | PIC18 (8-bit) | PIC18 (8-bit) |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 48 KB | 16 KB |
| Data SRAM | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 2560 bytes | 768 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CAN Peripheral | No | No | No | Yes (CAN 2.0B) | Yes (CAN 2.0B) | No |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Ключевые отличия
- Industrial temperature grade with widest Microchip distributor availability (против PIC18F452-E/L)
- Adds CAN 2.0B peripheral for networked industrial designs (против PIC18F448-I/L)
- Larger flash and SRAM headroom with same 44-PLCC footprint (против PIC18F458-I/L)
Заметки по проектированию
The PIC18F452-I/L requires a stable 5 V supply between 4.2 V and 5.5 V. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (pins 8, 18, 28, 38, 43), plus a bulk 10 uF tantalum or ceramic capacitor at the regulator output. During nanoWatt sleep modes, VDD must remain within specification to preserve SRAM contents and EEPROM write integrity.
For 40 MHz operation, use a 10 MHz crystal with the on-chip 4x PLL enabled via the OSCCON register. The HS oscillator mode supports 4 MHz to 25 MHz fundamental crystals; combine with PLL for full 40 MHz. Without PLL, an external 40 MHz clock source must be supplied to OSC1. The 22 pF load capacitors on OSC1/OSC2 should be sized per crystal manufacturer recommendations.
In-Circuit Debugging (ICD) uses pins PGC (RB6) and PGD (RB7). Series resistors (typically 4.7 kOhm) between the debugger and the target are recommended for production boards to isolate the ICSP signals from application circuitry. The MCLR/VPP pin must be pulled high through a resistor (typically 10 kOhm) and accessible for programming voltage during debug sessions.
Estimated: At 40 MHz with all peripherals active, the PIC18F452-I/L typically draws 25-35 mA; in nanoWatt sleep mode this drops to under 5 uA. Always verify MCLR is decoupled with a 100 nF capacitor to prevent spurious resets during supply transients. PORTD pins configured as the Parallel Slave Port must have their TRISD bits set correctly or unexpected bus contention can occur when interfacing external memory.
Информация о соответствии
RoHS and REACH compliance per Microchip product declaration. PLCC package is lead-free. AEC-Q100 not applicable for industrial-grade MCU. MSL-3 moisture sensitivity per JEDEC J-STD-020.
