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ZGP323H Datasheet(PDF) 39 Page - Zilog, Inc.

Part No. ZGP323H
Description  Programmable input glitch filter for pulse reception
Download  107 Pages
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Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
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ZGP323H Datasheet(HTML) 39 Page - Zilog, Inc.

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ZGP323H
Product Specification
PS023803-0305
Functional Description
31
Figure 17. Register Pointer—Detail
Stack
The internal register file is used for the stack. An 8-bit Stack Pointer SPL (R255) is
used for the internal stack that resides in the general-purpose registers (R4–
R239). SPH (R254) can be used as a general-purpose register.
R7 R6 R5 R4 R3 R2 R1 R
The upper nibble of the register file address
provided by the register pointer specifies the
active working-register group.
Specified Working
Register Group
Register Group 1
Register Group 0
I/O Ports
R253
The lower nibble of the
register file address provided
by the instruction points to
the specified register.
* RP = 00: Selects Register Bank 0, Working Register Group 0
R15 to R0
R15 to R4 *
R3 to R0 *
FF
F0
EF
E0
DF
D0
40
3F
30
2F
20
1F
10
0F
00
Register Group 2


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