RAM controller for CD player
BU9348K
Description
The BU9348K is an IC incorporating function that
can protect pop noise electrically by using DRAM
together for CD players. This IC is available for four
types of DRAM. Four shockproof mode(4bit, 5bit,
6bit, non-compression) and through mode can be
selected.
Dimension (Unit : mm)
14.0
鹵
0.3
10.0
鹵
0.2
33
23
14.0
鹵
0.3
10.0
鹵
0.2
34
44
1
11
22
12
Features
1) Available for 4 types of DRAM
(16MDRAM, 4MDRAMx2, 4MDRAM, 1MDRAM)
2) Four shockproof mode(4bit, 5bit, 6bit, non-compression)
and through mode selectable
3) Available for x4 speed(Max.)
4) Built-in digital attenuator and soft mute function
5) Built-in extended I/O function
2.15
鹵
0.1
0.05
0.15
鹵
0.1
0.8
0.35
鹵
0.1
QFP44
Applications
Portable CD players
Absolute Maximum Ratings (Ta=25藲C)
Parameter
Supply voltage
Power dissipation
Operating temperature range
Storage temperature range
鈭桪erating
: 5mW/藲C for operation above Ta=25藲C
Symbol
Vcc
Pd
Topr
Tstg
Limits
-0.3 ~
4.5
鈭?/div>
500
-25
-55
~
~
+75
+125
Unit
V
mW
藲C
藲C
Recommended Operating Conditions (Ta=25藲C)
Parameter
Symbol
V
CC
Min.
2.7
Supply voltage
Typ.
3.0
Max.
3.6
Unit
V
1.2
0.15
1
2
