PIC18F13K50 Data sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifPIC18F13K50/14K50 20-Pin USB Flash Microcontrollers with nanoWatt Technology (4/23/2009)High Performance PIC18 Core
C Compiler optimized architecture
Self-programmable under software control
Support for Interrupt Priority Levels
8x8 Single-Cycle Hardware Multiplier
Enhanced Watchdog Timer with a programmable period
Full Speed Universal Serial Bus Interface
USB v2.0 compliant interface
Supports both Low Speed and Full Speed operation
Supports Control, Interrupt, Isochronous and Bulk transfer
Up to 16 Endpoints (or up to 8 bidirectional)
Automatic detection of physical connection to USB host
256-byte Dual Access RAM
Flexible Clocking Options
Can be internally clocked up to 48MHz
Fully tunable Internal Oscillator
-Supplies frequencies from 31KHz to 16MHz
-Can be user-adjusted for frequency drift
Internal 4x Phase Lock Loop (PLL)
-Can be used with External or Internal Oscillators
Fail-safe Clock Monitor
-Allows for safe shutdown during oscillator failure
Advanced PIC® Microcontroller Peripherals
Dual Capture/Compare/PWM interfaces
-Up to 5 PWM Outputs
-Programmable dead time, auto shutdown/restart
Master I2C/SPI Interface
-Supports all modes of 3-wire SPI
-I2C™Compatible Master and Slave modes with address masking
Enhanced Addressable USART Module
-Supports RS-485, RS-232, and LIN 2.0
10-bit, 9-channel ADC Module
-Can acquire & convert samples automatically
-Can operate in sleep mode
mTouch(TM) compatible Analog Comparators w/ SR Latch
-Rail to Rail operation
-Independent input multiplexing
Robust GPIO with 25mA sink/source current
Programmable On-chip Voltage Reference
-Can be used with Comparators or ADC
Operating Environment Versatility
1.8 to 5.6V Operating Range
Software Programmable Brown-out Reset feature
Four power-managed operating modes
Two-speed clock startup option
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