ZiLOG Z8 User Manual page 119

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ZiLOG
OPEN-DRAIN
P20 OE
SPI EN
P20 IN
or
SPI DI
OPEN-DRAIN
Standard
P27 OUT
SPI DO
SPI DO
Standard
P27 OE
SPI Active
SCON
P27 IN
UM001601-0803
R ≈ 500 KΩ
SPI
SPI
0 SOI D0 Enable
D2
1 P27 OUT
*SPI must be enabled with D0
R ≈ 500 KΩ
Figure 9-16. SPI Data In/Out Configuration
Z8 Microcontrollers
Serial I/O
P20
PIN
Auto Latch
P27
PIN
Auto Latch
9-13

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