PIC18F2431 Data Sheet

enroo_ma

  PIC18F2331/2431/4331/4431 Data Sheet (09/16/2010)


14-Bit Power Control PWM Module:
ï Up to 4 Channels with Complementary Outputs
ï Edge or Center-Aligned Operation
ï Flexible Dead-Band Generator
ï Hardware Fault Protection Inputs
ï Simultaneous Update of Duty Cycle and Period:
- Flexible Special Event Trigger output
Motion Feedback Module:
ï Three Independent Input Capture Channels:
- Flexible operating modes for period and
pulse-width measurement
- Special Hall sensor interface module
- Special Event Trigger output to other modules
ï Quadrature Encoder Interface:
- 2-phase inputs and one index input from encoder
- High and low position tracking with direction
status and change of direction interrupt
- Velocity measurement
High-Speed, 200 ksps 10-Bit A/D Converter:
ï Up to 9 Channels
ï Simultaneous, Two-Channel Sampling
ï Sequential Sampling: 1, 2 or 4 Selected Channels
ï Auto-Conversion Capability
ï 4-Word FIFO with Selectable Interrupt Frequency
ï Selectable External Conversion Triggers
ï Programmable Acquisition Time
Flexible Oscillator Structure:
ï Four Crystal modes up to 40 MHz
ï Two External Clock modes up to 40 MHz
ï Internal Oscillator Block:
- 8 user-selectable frequencies: 31 kHz to 8 MHz
- OSCTUNE can compensate for frequency drift
ï Secondary Oscillator using Timer1 @ 32 kHz
ï Fail-Safe Clock Monitor:
- Allows for safe shutdown of device if clock fails
Power-Managed Modes:
ï Run: CPU on, Peripherals on
ï Idle: CPU off, Peripherals on
ï Sleep: CPU off, Peripherals off
ï Idle mode Currents Down to 5.8 μA, Typical
ï Sleep Current Down to 0.1 μA, Typical
ï Timer1 Oscillator, 1.8 μA, Typical, 32 kHz, 2V
ï Watchdog Timer (WDT), 2.1 μA, typical
ï Oscillator Two-Speed Start-up
Peripheral Highlights:
ï High-Current Sink/Source 25 mA/25 mA
ï Three External Interrupts
ï Two Capture/Compare/PWM (CCP) modules:
- Capture is 16-bit, max. resolution 6.25 ns (TCY/16)
- Compare is 16-bit, max. resolution 100 ns (TCY)
- PWM output: PWM resolution is 1 to 10 bits
ï Enhanced USART module:
- Supports RS-485, RS-232 and LIN 1.2
- Auto-wake-up on Start bit
- Auto-Baud Detect
ï RS-232 Operation using Internal Oscillator Block
(no external crystal required)
Special Microcontroller Features:
ï 100,000 Erase/Write Cycle Enhanced Flash
Program Memory, Typical
ï 1,000,000 Erase/Write Cycle Data EEPROM
Memory, Typical
ï Flash/Data EEPROM Retention: 100 Years
ï Self-Programmable under Software Control
ï Priority Levels for Interrupts
ï 8 x 8 Single-Cycle Hardware Multiplier
ï Extended Watchdog Timer (WDT):
- Programmable period from 41 ms to 131s
ï Single-Supply In-Circuit Serial Programmingô
(ICSPô) via Two Pins
ï In-Circuit Debug (ICD) via Two Pins:
- Drives PWM outputs safely when debugging



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