Specifications

33
DV-505, DVL-909, DV-S9
SRM2B256SLMX70 (DVDM ASSY : IC502)
• 256 K SRAM (For Mechanism Control IC)
•
Block Diagram
•
Pin Function
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
Address Buffer
A0
A1
A2
A3
A4
9
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
20
CS
512
64×8
Line
Decoder
Memory-Cell
Array
512×64×8
6
8
Row
Decoder
64
Row Gate
Control
Logic
Control
Logic
I/O Buffer
22
OE
27
11
WE
Vss
I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8
V
DD
CS
OE,WE
1214 18 13 15 16 17 18 19
.oNemaNniPnoitcnuF.oNemaNniPnoitcnuF
141A
tupnisserddA
514O/I
tuptuo/tupniataD
221A615O/I
37A716O/I
46A817O/I
55A918O/I
64A02
SC
tcelespihC
73A1201AtupnisserddA
82A22
EO
elbanetuptuO
91A3211A
tupnisserddA
010A429A
111O/I
tuptuo/tupniataD
528A
212O/I6231A
313O/I72
EW
elbaneetirW
41SSV)V0(DNG82DDV)V5.5ot7.2(ylppusrewoP