W90N745CD/W90N745CDG
Table 5.1 W90N745 Pins Description, continued
PIN NAME
IO TYPE
DESCRIPTION
2
I C/USI
I2C Serial Clock Line 0.
USI Serial Frame.
SCL0 /
SFRM /
IOU
TIMER0 /
GPIO [11]
Timer0 time out output.
General Purpose In/Out port [11].
I2C Serial Data Line 0
SDA0 /
SSPTXD /
TIMER1 /
GPIO [12]
USI Serial Transmit Data
Timer1 time out output
IOU
General Purpose In/Out port [12]
I2C Serial Clock Line 1
SCL1 /
SCLK /
USI Serial Clock
IOU
GPIO [13] /
KPROW [3]
General Purpose In/Out port [13]
Keypad row scan output [3]
I2C Serial Data Line 1
SDA1 /
SSPRXD /
GPIO [14] /
KPROW [2]
USI Serial Receive Data
General Purpose In/Out port [14]
Keypad scan output [2]
IDU
UART0/UART1/UART2
TXD0 /
UART0 Transmit Data.
IOU
IOU
IOU
IOU
GPIO [5]
General Purpose In/Out [5]
RXD0 /
UART0 Receive Data.
GPIO [6]
General Purpose In/Out [6]
TXD1 /
UART1 Transmit Data.
GPIO [7]
General Purpose In/Out [7]
RXD1 /
UART1 Receive Data.
GPIO [8]
General Purpose In/Out [8]
CTS1/
UART1 Clear To Send for Bluetooth application
UART2 Transmit Data supporting SIR IrDA.
PS2 Interface Clock Input/Output
General Purpose In/Out [9]
TXD2(IrDA) /
PS2_CLK /
GPIO [9]
IOU
IOU
RTS1/
UART1 Request To Send for Bluetooth application
UART2 Receive Data supporting SIR IrDA.
PS2 Interface Bi-Directional Data Line.
General Purpose In/Out [10]
RXD2(IrDA) /
PS2_DATA /
GPIO [10]
XDMA
nXDREQ /
GPIO [19] /
nXDACK /
GPIO [18] /
External DMA Request.
IO
IO
General Purpose In/Out [19]
External DMA Acknowledgement.
General Purpose In/Out [18]
- 16 -
WINBOND [ WINBOND ]
