參數(shù)資料
型號: Z86C36
廠商: ZiLOG, Inc.
英文描述: CMOS Z8 MCU(CMOS Z8系列微控制器)
中文描述: 單片機(jī)的CMOS Z8的CMOS(Z8系列微控制器)
文件頁數(shù): 31/70頁
文件大?。?/td> 1192K
代理商: Z86C36
Z86C34/C35/C36/C44/C45/C46
CMOS Z8 MCUs with ASCI UART
ZiLOG
DS007601-Z8X0499
P R E L I M I N A R Y
31
Register File.
The register file consists of four I/O port reg-
isters, 236 general-purpose registers and 15 control and sta-
tus registers (
R0–R3
,
R4–R239
and
R240–R255
, respective-
ly), plus three system configuration registers in the
expanded register group. The instructions access registers
directly or indirectly through an 8-bit address field. As a re-
sult, a short, 4-bit register address can use the Register
Pointer (Figure 20). In the 4-bit mode, the register file is
divided into 16 working register groups, each occupying 16
Figure 19. Expanded Register File Architecture
7
6
5
4
3
2
1
0
Working Register
Group Pointer
Expanded Register
Group Pointer
%FF
%FO
%7F
%0F
%00
Z8 Reg. File
REGISTER POINTER
% FF
% FE
% FD
% FC
% FB
% FA
% F9
% F8
% F7
% F6
% F5
% F4
% F3
% F2
% F1
% F0
SPL
SPH
RP
FLAGS
IMR
IRQ
IPR
P01M
P3M
P2M
PRE0
T0
PRE1
T1
TMR
0
U
0
0
U
0
0
1
U
U
U
U
0
% (F) 0F
% (F) 0E
% (F) 0D
% (F) 0C
% (F) 0B
% (F) 0A
% (F) 09
% (F) 08
% (F) 07
% (F) 06
% (F) 05
% (F) 04
% (F) 03
% (F) 02
% (F) 01
% (F) 00
WDTMR
SMR
0
U
U
0
U
1
0
1
U
U
U
U
0
0
U
U
0
U
0
0
1
U
U
U
U
0
0
U
U
0
U
0
0
1
U
U
U
U
0
0
U
U
0
U
1
0
1
U
U
U
U
0
0
U
U
0
U
1
0
1
U
U
U
U
0
0
U
U
0
U
0
0
1
U
U
0
U
0
0
U
U
0
U
1
0
1
0
U
0
U
0
U
U
U
0
1
1
0
1
0
0
1
0
0
0
0
0
1
1
1
1
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
REGISTER
EXPANDED REG. GROUP (F)
RESET CONDITION
REGISTER
EXPANDED REG. GROUP(0)
RESET CONDITION
REGISTER
Z8 STANDARD CONTROL REGISTERS
RESET CONDITION
% (0) 03
P3
% (0) 02
P2
% (0) 01
P1
% (0) 00
P0
D7 D6 D5 D4 D3 D2 D1 D0
Reserved
*
*
*
**
Reserved
Reserved
SMR2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PCON
*
*
X
*
1
1
1
1
1
1
1
0
Notes:
U = Unknown
For ROMless Reset condition: “10110110”.
*Will not be reset with a STOP-Mode Recovery.
**Will not be reset with a STOP-Mode Recovery, except bit D0.
Not available on 28-pin packages.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
U
U
U
U
U
U
0
0
*
X
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