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Operation Frequency 
 6MHz crystal oscillation with internal 48MHz PLL. 
 Internal RC oscillator 48MHz +/- 0.3% in USB mode 
 STOP mode 

On-Chip Memory 
 8k x 14 internal program FLASH 
 Internal 160 Bytes RAM at F-plane and two 64Bytes RAM at R-plane 
USB interface 
 Compliance with the Universal Serial Bus specification v2.0 Full Speed 
 Built-in USB Transceiver, 3.3V regulator. 
 Support USB Suspend /Resume and Remote Wakeup function 
 Endpoint 0: Control SETUP/IN/OUT transfer (each 8 bytes) 
 Endpoint 1: INTERRUPT IN transfer (8 bytes) 
 Endpoint 2: INTERRUPT IN transfer (8 bytes) 
 Endpoint 3: BULK-IN transfer with Ping-Pong feature (2*64 bytes) 
 Endpoint 4: BULK-OUT transfer with Ping-Pong feature (2*64 bytes) 
Timer 
 Timer0 is 8-bit with 8-bit prescaler, Counter/Reload/Interrupt function 
 Timer1 is 8-bit counter. 
 Watchdog Timer clocked by built-in RC oscillator 
 Wakeup Timer clocked by built-in RC oscillator 
PWM: 
 Support Pulse Width Modulation (PWM) function with 8-bit resolution. 
Reset Controller 
 Power On Reset, Watch-Dog Timer, USB Plug-out Reset 
SPI interface 
 Support Mode0, 1, 2, 3 
 Master only 
 Clock rate up to 6Mbps. 
 Read/Write DMA mode 
I80 Interface 
 Compatible with 8-bit parallel interface 
 Read/Write DMA mode 

Touch Key 
 5 channel touch pad 
I/O Ports 
 Max. 36 GPIOs to flexible application 
LQFP48/ Die Form

     USB Standard Keyboard with auto-run function 
 USB RF 2.4G Keyboard for PC 
 USB IR Remote control with LCD Display for TV 
 USB Touch pad function for keyboard