PIC18F4550 Flash 40-pin 32kB 48MHz Microcontroller (Microchip)
Specifications
- 40-pin Low Power Microcontroller
- Flash Program Memory: 32 kbytes
- EEPROM Data Memory: 256 bytes
- SRAM Data Memory: 2048 bytes
- I/O Pins: 35
- Timers: One 8-bit / Three 16-Bit
- A/D Converter: 10-bit Thirteen Channels
- PWM: 10-bit Two Modules
- Enhanced USART: Addressable with RS-485, RS-232 and LIN Support
- MSSP: SPI and I²C Master and Slave Support
- External Oscillator: up to 48MHz
- Internal Oscillator: 8MHz
Feature
Power Management
Feature
s
- Run: CPU on, Peripherals on
Idle: CPU off, Peripherals on
Sleep: CPU off, Peripherals off
Idle mode Currents Down to 5.8 μA Typical
Sleep mode Current Down to 0.1 μA Typical
Timer1 Oscillator: 1.1 μA, 32 kHz, 2V
Watchdog Timer: 2.1 μA,32 kHz, 2V Typical
Two-Speed Oscillator Start-up
Flexible Oscillator Structure:
- Four Crystal modes, up to 48 MHz
Internal Oscillator Block:
- 8 user-selectable frequencies, from 31 kHz to 8 MHz
User-tunable to compensate for frequency drift
Secondary Oscillator using Timer1 @ 32 kHz
Fail-Safe Clock Monitor:
- Allows for safe shutdown if peripheral clock stops
Peripheral Highlights:
- High-Current Sink/Source 25 mA/25 mA
Three Programmable External Interrupts
Four Input Change Interrupts
Up to 2 Capture/Compare/PWM (CCP) modules, one with Auto-Shutdown (28-pin devices)
Enhanced Capture/Compare/PWM (ECCP) module (40/44-pin devices only):
- One, two or four PWM outputs
Selectable polarity
Programmable dead time
Auto-shutdown and auto-restart
Peripheral Highlights (Continued):
- Master Synchronous Serial Port (MSSP) module Supporting 3-Wire SPI (all 4 modes) and I2C™ Master and Slave modes
Enhanced Addressable USART module:
- Supports RS-485, RS-232 and LIN/J2602
RS-232 operation using internal oscillator block (no external crystal required)
Auto-wake-up on Start bit
Auto-Baud Detect
10-Bit, up to 13-Channel Analog-to-Digital (A/D)
Converter module:
- Auto-acquisition capability
Conversion available during Sleep
Dual Analog Comparators with Input Multiplexing
Programmable 16-Level High/Low-Voltage
Detection (HLVD) module:
- Supports interrupt on High/Low-Voltage Detection
Special Microcontroller
Feature
s:
- C Compiler Optimized Architecture:
- Optional extended instruction set designed to optimize re-entrant code
100,000 Erase/Write Cycle Enhanced Flash Program Memory Typical
1,000,000 Erase/Write Cycle Data EEPROM Memory Typical
Flash/Data EEPROM Retention: 100 Years Typical
Self-Programmable under Software Control
Priority Levels for Interrupts
8 x 8 Single-Cycle Hardware Multiplier
Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
Single-Supply 5V In-Circuit Serial Programming™ (ICSP™) via Two Pins
In-Circuit Debug (ICD) via Two Pins
Wide Operating Voltage Range: 2.0V to 5.5V
Programmable Brown-out Reset (BOR) with Software Enable Option
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