Z8E001
Z8Plus OTP Microcontroller
ZiLOG
RESET PIN OPERATION (Continued)
Table 4. Control and Peripheral Registers (Continued)
Bits
Register (HEX) Register Name 7 6 5 4 3 2 1
D7
Port B Special
0000000
Function
D6
Port B Directional 0 0 0 0 0 0 0
Control
D5
Port B Output
UUUUUUU
D4
Port B Input
UUUUUUU
D3
Port A Special
0000000
Function
D2
Port A Directional 0 0 0 0 0 0 0
Control
D1
Port A Output
UUUUUUU
D0
Port A Input
UUUUUUU
CF
Reserved
CE
Reserved
CD
T1VAL
UUUUUUU
CC
T0VAL
UUUUUUU
CB
T3VAL
UUUUUUU
CA
T2VAL
UUUUUUU
C9
T3AR
UUUUUUU
C8
T2AR
UUUUUUU
C7
T1ARHI
UUUUUUU
C6
T0ARHI
UUUUUUU
C5
T1ARLO
UUUUUUU
C4
T0ARLO
UUUUUUU
C3
WDTHI
1111111
C2
WDTLO
1111111
C1
TCTLHI
1111100
C0
TCTLLO
0000000
Note: *The SMR and WDT flags are set indicating the source of the RESET.
0 Comments
0 Deactivates all port special functions
after RESET
0 Defines all bits as inputs in PortB
after RESET
U Output register not affected by
RESET
U Current sample of the input pin
following RESET
0 Deactivates all port special functions
after RESET
0 Defines all bits as inputs in PortA
after RESET
U Output register not affected by
RESET
U Current sample of the input pin
following RESET
U
U
U
U
U
U
U
U
U
U
1
1
0 WDT Enabled in HALT Mode, WDT
timeout at maximum value, STOP
Mode disabled
0 All standard timers are disabled
16
PRELIMINARY
DS001101-Z8X0400