SDA5252 SIEMENS [Siemens Semiconductor Group], SDA5252 Datasheet - Page 13

• Manufacturer Part Number: SDA5252
• Description: TVTEXT 8-Bit Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Table 1
Pin Functions (ROM- and ROMless-Version) (cont’d)
Symbol Pin No.
V
V
R
G
B
BLAN
COR
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
Semiconductor Group
DD
SS
P-SDIP-
52-1
11, 37
10, 35
47
48
49
50
51
52
1
44
36
43
42
41
40
Pin No.
P-MQFP-
64-1
5, 6,
37, 38
2, 3,
35, 36
19
20
21
22
23
24
25
15
4
14
13
10
9
Pin No.
P-MQFP-
80-1
13, 51
12, 50
45
46
47
48
49
3
2
80
79
78
77
76
75
Pin No.
P-LCC-84-
2
2, 43
1, 42
37
38
39
40
41
76
75
74
73
72
71
70
69
13
Input (I)
Output (O)
Supply (S)
S
S
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Function
Power supply voltage
Ground (0 V)
Red colour signal output
Green colour signal output
Blue colour signal output
Blanking output
Contrast Reduction output
Port 3 is an 8-bit bidirectional I/O
port with internal pullup resistors.
Port 3 pins that have 1s written to
them are pulled high by the internal
pullup resistors and in that state can
be used as inputs.
It also contains the interrupt, timer
and serial port input pins. The
output latch corresponding to a
secondary function must be
programmed to a one (1) for that
function to operate.
The secondary functions are
assigned to the pins of port 3 as
follows:
- INT0 (P3.2): interrupt 0
- INT1 (P3.3): interrupt 1
- T0 (P3.4): counter 0 input
- T1 (P3.5): counter 1 input
- RXD(P3.6): serial port receive
- TXT(P3.7): serial port transmit
Attention: P3.6 must not be kept to
‘0’ during reset, otherwise a special
test mode will be activated.
input/timer 0 gate control input
input/timer 1 gate control input
line
line
SDA 525x
1998-04-08