參數(shù)資料
型號(hào): SDA 5255
廠商: SIEMENS AG
英文描述: TVTEXT 8-Bit Microcontroller(ROM-Versions )(TV視頻的8位微控制器(含ROM 型 ))
中文描述: TVTEXT 8位微控制器(ROM的版本)(電視視頻的8位微控制器(含光盤型))
文件頁數(shù): 13/143頁
文件大?。?/td> 1050K
代理商: SDA 5255
SDA 525x
Semiconductor Group
13
1998-04-08
V
DD
V
SS
11, 37
10, 35
5, 6,
37, 38
2, 3,
35, 36
13, 51
12, 50
2, 43
1, 42
S
S
Power supply voltage
Ground (0 V)
R
G
B
BLAN
COR
47
48
49
50
51
19
20
21
22
23
45
46
47
48
49
37
38
39
40
41
O
O
O
O
O
Red colour signal output
Green colour signal output
Blue colour signal output
Blanking output
Contrast Reduction output
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
52
1
44
36
43
42
41
40
24
25
15
4
14
13
10
9
3
2
80
79
78
77
76
75
76
75
74
73
72
71
70
69
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
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
input/timer 0 gate control input
- INT1 (P3.3): interrupt 1
input/timer 1 gate control input
- T0 (P3.4): counter 0 input
- T1 (P3.5): counter 1 input
- RXD(P3.6): serial port receive
line
- TXT(P3.7): serial port transmit
line
Attention: P3.6 must not be kept to
‘0’ during reset, otherwise a special
test mode will be activated.
Table 1
Pin Functions (ROM- and ROMless-Version)
(cont’d)
Symbol
Pin No.
P-SDIP-
52-1
Pin No.
P-MQFP-
64-1
Pin No.
P-MQFP-
80-1
Pin No.
P-LCC-84-
2
Input (I)
Output (O)
Supply (S)
Function
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