SDA9253 Datasheet, PDF (8/25 Pages) Siemens Semiconductor Group – 2.6 MBit Dynamic Sequential Access Memory for Television Applications (TV-SAM)

SDA 9253
Pin Definitions and Functions
Pin No. Symbol
34
33
16
15
51
58
26
44
43
11
12
62
59
23
45
46
3
4
60
52
53
54
55
7, 13, 19,
30, 36, 42
8, 14, 20,
29, 35, 41
24, 56
25, 57
61
SQA0
.
.
SQA11
SCA
RA
OEA
SQB0
.
.
SQB11
SCB
RB
OEB
SDC0
.
.
SDC11
WT
SAR
SAC
SCAD
RE
V_DD2
V_SS2
V_DD1
V_SS1
OPM
Input (I)
Output (O)
O
O
O
O
I
I
I
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
Function
Serial data output for port A
Serial clock input for port A
Read transfer control input (latch A to shift register A)
Output enable input for port A
Serial data output for port B
Serial clock input for port B and C
Read transfer control input (latch B to shift register B)
Output enable input for port B
Serial data input for port C
Write transfer control input (shift register C to latch C)
Serial row address input
Serial column address and mode control input
Serial address clock input
RAM-enable input (also latches the addresses)
Data output power supply (+ 5 V)
Data output power supply (GND)
Memory power supply (+ 5 V), must be connected to V_DD2
Memory power supply (GND), must be connected to V_SS2
Test function (for factory use only)
Semiconductor Group
8
1998-01-30