Z86E30 Zilog., Z86E30 Datasheet - Page 35

• Manufacturer Part Number: Z86E30
• Description: Z8 4K OTP Microcontroller
• Manufacturer: Zilog.

Zilog
DS97Z8X0500
EF
70
6F
10
FF
F0
80
60
5F
50
4F
40
3F
30
2F
20
1F
0F
00
7F
The upper nibble of the register file address
provided by the register pointer specifies
the active working-register group.
* Expanded Register Group (0) is selected
in this figure by handling bits D3 to D0 as
"0" in Register R253 (RP).
r7 r6 r5 r4
Register Group 1
Register Group F
Specified Working
Register Group 0
Figure 25. Register Pointer
Register Group
P R E L I M I N A R Y
I/O Ports
r3 r2 r1 r0
R253
(Register Pointer)
Note: Registers 80H
through EFH are
available in the Z86C30
only.
The lower nibble
of the register
file address
provided by the
instruction points
to the specified
register.
R15 to R0
R15 to R4*
R3 to R0*
Z8 4K OTP Microcontroller
Z86E30/E31/E40
35
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