z86d73 ZiLOG Semiconductor, z86d73 Datasheet - Page 38
z86d73
Manufacturer Part Number
z86d73
Description
40/44/48-pin Low-voltage
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z86D73.pdf
(92 pages)
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PS019402-1103
Stack
Note:
The Z86D73 internal register file is used for the stack. An 8-bit Stack Pointer
(R255) is used for the internal stack that resides in the general-purpose registers
(R4–R239). SPH is used as a general-purpose register only when using internal
stacks.
Table 10. Expanded Register Group D
(D)0Ch
(D)0Bh
(D)0Ah
(D)09h
(D)08h
(D)07h
(D)06h
(D)05h
(D)04h
(D)03h
(D)02h
(D)01h
(D)00h
When SPH is used as a general-purpose register and Port 0 is
in address mode, the contents of SPH are loaded into Port 0
whenever the internal stack is accessed
P
LVD
HI8
LO8
HI16
LO16
TC16H
TC16L
TC8H
TC8L
Reserved
CTR2
CTR1
CTR0
R
E
L
I
M
I
N
A
40/44/48-Pin Low-Voltage IR OTP
R
Y
Z86D73
32
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