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W90N745CD Datasheet, PDF (10/422 Pages) Winbond – 16/32-bit ARM microcontroller | |||
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W90N745CD/W90N745CDG
⢠Supports 7 bit addressing mode
⢠Software mode I2C
Universal Serial Interface (USI)
⢠1-channel USI
⢠Support USI (Microwire/SPI) master mode
⢠Full duplex synchronous serial data transfer
⢠Variable length of transfer word up to 32 bits
⢠Provide burst mode operation, transmit/receive can be executed up to four times in one transfer
⢠MSB or LSB first data transfer
⢠Rx and Tx on both rising or falling edge of serial clock independently
⢠Two slave/device select lines
⢠Fully static synchronous design with one clock domain
2-Channel AC97/I²S Audio Codec Host Interface
⢠AHB master port and an AHB slave port are offered in audio controller.
⢠Always 8-beat incrementing burst
⢠Always bus lock when 8-beat incrementing burst
⢠When reach middle and end address of destination address, a DMA_IRQ is requested to CPU
automatically
KeyPad Scan Interface
⢠Scan up to 16 rows by 8 columns with an external 4 to 16 decoder and 4x8 array without auxiliary
component
⢠Programmable debounce time
⢠One or two keys scan with interrupt and three keys reset function.
⢠Wakeup CPU from IDEL/Power Down mode
PS2 Host Interface
⢠APB slave consisted of PS2 protocol.
⢠Connect IBM keyboard or bar-code reader through PS2 interface.
⢠Provide hardware scan code to ASCII translation
Publication Release Date: September 22, 2006
-5-
Revision A2
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