saa5290ps NXP Semiconductors, saa5290ps Datasheet - Page 15

• Manufacturer Part Number: saa5290ps
• Description: Economy Teletext And Tv Microcontrollers
• Manufacturer: NXP Semiconductors

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7.4
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
Table 10 Special Function Register map; note 1
ACC
B
DPTR
IE
P0
P1
P2
P3
PCON
SYMBOL
(2)
DPH
DPL
(2)(3)
(2)
(2)
(2)
(2)(3)
(2)
Microcontroller interfacing
(3)
S
PECIAL
Accumulator
B register
Data Pointer
(2 bytes)
Interrupt
Enable
Port 0
Port 1
Port 2
Port 3
Power Control
High byte
Low byte
NAME
F
UNCTION
R
EGISTER MAP
DIRECT
ADDR.
(HEX)
E0
A8
A0
B0
F0
83
82
80
90
87
AF
EA
E7
F7
87
97
A7
B7
7
ARD
ES1
AE
BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION
E6
F6
A6
B6
86
96
6
ES2
AD
E5
A5
B5
F5
85
95
5
AC
E4
F4
84
94
A4
B4
4
(1)
(1)
GF1
ET1
AB
E3
F3
A3
B3
83
93
3
EX1
GF0
AA
E2
F2
A2
B2
82
92
2
ET0
E1
F1
A9
81
91
A1
B1
1
EX0
E0
A8
A0
B0
F0
80
90
0
RESET
VALUE
(HEX)
FF
FF
FF
FF
00
00
00
00
00
10