Specifications
WM_PRJ_Q2501_PTS_001 – 003
March 2004
© 2003 All rights reserved
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2.9.2.7 SPI Bus
Signal Pin I/O I/O type Level Comment
SPI_IO 28 I/O CMOS
2.8 V / 3X
VIL
≤
0.3 VCC*
VIH
≥
0.7 VCC*
VOL
≤
0.1V
VOH
≥
2.7 V
Multiplexed with
SDA
SPI_CLK 30 O CMOS
2.8 V / 3X
VOL
≤
0.1V
VOH
≥
2.7 V
Duty cycle=50 %
External pull-up
resistor required.
Multiplexed with
SCL
SPI_EN 48 O CMOS
2.8 V / 3X
VOL
≤
0.1V
VOH
≥
2.7 V
Multiplexed with
GPO3
SPI_AUX 46 O CMOS
2.8 V / 3X
VOL
≤
0.1V
VOH
≥
2.7 V
Multiplexed with
GPO0
*VCC = 2.8 V
2.9.2.8 2-wire Bus
Signal Pin I/O I/O type Level Comment
SDA 28 I/O CMOS
2.8 V / 3X
VIL
≤
0.3 VCC*
VIH
≥
0.7 VCC*
VOL
≤
0.1V
VOH
≥
2.7 V
Multiplexed with
SPI_IO
SCL 30 O CMOS
2.8 V / 3X
VOL
≤
0.1V
VOH
≥
2.7 V
Duty cycle=50 %
External pull-up
resistor required.
Multiplexed with
SPI_CLK
*VCC = 2.8 V