PIC18F452-I/L - 8-bit 40MHz 32KB Flash MCU | Microchip 44-PLCC
MPN: PIC18F452-I/L ✓ AktifPIC18F452-I/L Ringkasan
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.
Alternatif penggantian untuk PIC18F452-I/L — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC18F452-I/L (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, Timers, Mounting Type, Core Architecture.
PIC18F452-E/L
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F452T-I/L
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F448-I/L
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F458-I/L
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F442-I/L
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F452-I/L Rating Maksimal & Karakteristik Listrik
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Frekuensi Bawah Maximum | 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 |
| Tegangan Pemuat | 4.2 V to 5.5 V |
| Rentang Suhu Kerja | -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 |
| Paket | 44-pin PLCC (16.59 x 16.59 mm) |
| Tipe Mounting | Surface Mount (PLCC socket compatible) |
| Instruction Set | 77 single-word instructions |
| Self-Programming / ICD | Yes |
| Power-Saving Modes | nanoWatt technology |
Konfigurasi Pin PIC18F452-I/L
| Pin produk 1 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Pin produk 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Pin produk 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin produk 4 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pin produk 5 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator output |
| Pin produk 6 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator input |
| Pin produk 7 | VSS — Ground reference |
| Pin produk 8 | VDD — Positive supply (5 V) |
| Pin produk 9 | RB0/INT0 — PORTB bit 0 / External interrupt 0 |
| Pin produk 10 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| Pin produk 11 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| Pin produk 12 | RB3/CCP2 — PORTB bit 3 / CCP2 output |
| Pin produk 13 | RB4 — PORTB bit 4 |
| Pin produk 14 | RB5/PGM — PORTB bit 5 / LVP programming |
| Pin produk 15 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin produk 16 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin produk 17 | VSS — Ground reference |
| Pin produk 18 | VDD — Positive supply (5 V) |
| Pin produk 19 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator |
| Pin produk 20 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| Pin produk 21 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Pin produk 22 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin produk 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin produk 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin produk 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pin produk 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pin produk 27 | VSS — Ground reference |
| Pin produk 28 | VDD — Positive supply (5 V) |
| Pin produk 29 | RD0/PSP0 — PORTD bit 0 / Parallel slave port 0 |
| Pin produk 30 | RD1/PSP1 — PORTD bit 1 / Parallel slave port 1 |
| Pin produk 31 | RD2/PSP2 — PORTD bit 2 / Parallel slave port 2 |
| Pin produk 32 | RD3/PSP3 — PORTD bit 3 / Parallel slave port 3 |
| Pin produk 33 | RD4/PSP4 — PORTD bit 4 / Parallel slave port 4 |
| Pin produk 34 | RD5/PSP5 — PORTD bit 5 / Parallel slave port 5 |
| Pin produk 35 | RD6/PSP6 — PORTD bit 6 / Parallel slave port 6 |
| Pin produk 36 | RD7/PSP7 — PORTD bit 7 / Parallel slave port 7 |
| Pin produk 37 | VSS — Ground reference |
| Pin produk 38 | VDD — Positive supply (5 V) |
| Pin produk 39 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Pin produk 40 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Pin produk 41 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Pin produk 42 | VSS — Ground reference |
| Pin produk 43 | VDD — Positive supply (5 V) |
| Pin produk 44 | MCLR/VPP — Master clear reset / Programming voltage |
Aplikasi Umum
PIC18F452-I/L cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC18F452-I/L — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Industrial temperature grade with widest Microchip distributor availability (vsPIC18F452-E/L)
- Adds CAN 2.0B peripheral for networked industrial designs (vsPIC18F448-I/L)
- Larger flash and SRAM headroom with same 44-PLCC footprint (vsPIC18F458-I/L)
Catatan Desain
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.
Informasi Konformitas
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.
