Port b control registers – Zilog Z8PE002 User Manual
Page 41
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Z8PE002
ZiLOG
Z8Plus OTP Microcontroller
DS008700-Z8X0799
P R E L I M I N A R Y
41
PORT B CONTROL REGISTERS
Figure 38. Port B Input Value Register
Figure 39. Port B Output Value Register
Figure 40. Port B Directional Control Register
D7
D6
D5
D4
D3
D2
D1
D0
Register 0D4H
PTBIN
Port B Bit n current input value
Reserved (must be 0)
(only updated for pins in input mode)
D7
D6
D5
D4
D3
D2
D1
D0
Register 0D5H
PTBOUT
Port B Bit n current output value
Reserved (must be 0)
D7
D6
D5
D4
D3
D2
D1
D0
Register 0D6H
PTBDIR
Reserved (must be 0)
1 = Bit n set as output
0 = Bit n set as input
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