Z8673312PSG Datasheet, PDF (54/84 Pages) Zilog, Inc. – CMOS Z8 OTP Microcontrollers

CMOS Z8^® OTP Microcontrollers
Product Specification
50
r7 r6 r5 r4
r3 r2 r1 r0
R232
(Register Pointer)
This upper nibble of the register file addresses
provided by the register pointer specifies
the active working-register group.
FF
F0
EF
80
7F
70
6F
60
5F
50
4F
40
3F
Specified Working
30
Register Group
2F
20
1F
Register Group 1
10
0F
Register Group 0
I/O Ports
00
The lower nibble
of the register
file addresses
provided by the
instruction points
to the specified
register.
R15 to R0
R15 to R4
R3 to R0
* Expanded Register Group (0) is selected
in this figure by handling bits D3 to D0
as “0” in Register R253 (RP).
Figure 25. Register Pointer
PS022901-0508
Electrical Characteristics