
Z8 Microcontrollers
Address Space
ZiLOG
UM001600-Z8X0599
2-9
Working Register Group 0 in ERF Bank 0 consists of the
registers for Z8 General-Purpose Registers and ports. Ta-
ble 2-6 shows the registers within this group.
Working Register Group 0 in ERF Bank F consists of the
control registers for STOP mode, WDT, and port control.
Table 2-7 shows the registers within this group.
The functions and applications of the control and peripher-
al registers are described in subsequent sections of this
manual.
Table 2-6. Expanded Register File Bank 0,
WR Group 0
Register
Function
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
General-Purpose Register
Port 3
Port 2
Port 1
Port 0
Working
Register
R15
R14
R13
R12
R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
Register
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
Table 2-7. Expanded Register File Bank F,
WR Group 0
Register
Function
WDTMR
Reserved
Reserved
Reserved
SMR
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PCON
Working
Register
R15
R14
R13
R12
R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
Register
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0