參數(shù)資料
型號： SAA5297AH
廠商： NXP Semiconductors N.V.
英文描述： Economy teletext and TV microcontrollers
中文描述： 經(jīng)濟(jì)圖文電視和電視微控制器
文件頁數(shù)： 14/68頁
文件大小： 612K
代理商： SAA5297AH
1
1
P
P
E
S
7.4
Microcontroller interfacing
The 80C51 communicates with the peripheral functions using Special Function Registers (SFRs) which are addressed as RAM locations. The registers
in the teletext decoder appear as normal SFRs in the microcontroller memory map, but are written to using an internal serial bus. The SFR map is given
in Table 10.
7.4.1
S
PECIAL
F
UNCTION
R
EGISTER MAP
Table 10
Special Function Register map; note 1
SYMBOL
NAME
DIRECT
ADDR.
(HEX)
BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION
RESET
VALUE
(HEX)
7
6
5
4
3
2
1
0
ACC
(2)
Accumulator
E0
E7
F7
E6
F6
E5
F5
E4
F4
E3
F3
E2
F2
E1
F1
E0
F0
00
B
(2)
B register
F0
00
DPTR
Data Pointer
(2 bytes)
High byte
Low byte
Interrupt
Enable
DPH
DPL
IE
(2)(3)
83
82
A8
00
00
00
AF
EA
87
97
A7
B7
AE
ES1
86
96
A6
B6
ARD
AD
ES2
85
95
A5
B5
AC
*
84
94
A4
B4
*
AB
ET1
83
93
A3
B3
GF1
AA
EX1
82
92
A2
B2
GF0
A9
ET0
81
91
A1
B1
A8
EX0
80
90
A0
B0
P0
(2)
Port 0
80
FF
P1
(2)
Port 1
90
FF
P2
(2)
Port 2
A0
FF
P3
(2)(3)
Port 3
B0
FF
PCON
(3)
Power Control
87
10
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