BU9348K Rohm Semiconductor, BU9348K Datasheet
BU9348K
Manufacturer Part Number
BU9348K
Description
IC DRAM CONTROLLER QFP44
Manufacturer
Rohm Semiconductor
Datasheet
1.BU9348K.pdf
(2 pages)
Specifications of BU9348K
Controller Type
Dynamic RAM (DRAM)
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-25°C ~ 75°C
Package / Case
44-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BU9348K
Manufacturer:
PHILIPS
Quantity:
1 186
Part Number:
BU9348K
Manufacturer:
ROHM/罗姆
Quantity:
20 000
∗Derating : 5mW/˚C for operation above Ta=25˚C
Supply voltage
Supply voltage
Power dissipation
Operating temperature range
Storage temperature range
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.
Features
1) Available for 4 types of DRAM
2) Four shockproof mode(4bit, 5bit, 6bit, non-compression)
3) Available for x4 speed(Max.)
4) Built-in digital attenuator and soft mute function
5) Built-in extended I/O function
Applications
Portable CD players
Recommended Operating Conditions (Ta=25˚C)
Absolute Maximum Ratings (Ta=25˚C)
(16MDRAM, 4MDRAMx2, 4MDRAM, 1MDRAM)
and through mode selectable
Parameter
Parameter
RAM controller for CD player
Symbol
Symbol
Topr
Tstg
Vcc
V
Pd
CC
BU9348K
Min.
2.7
-0.3 ~
-25
-55
Limits
Typ.
500
3.0
~
~
∗
+125
4.5
+75
Max.
3.6
Dimension (Unit : mm)
Unit
Unit
mW
˚C
˚C
V
V
34
44
0.8
14.0 ± 0.3
10.0 ± 0.2
33
1
QFP44
23
0.35 ± 0.1
11
22
12
0.15 ± 0.1
0.15
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BU9348K Summary of contents
Page 1
... RAM controller for CD player Description The BU9348K 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. Features 1) Available for 4 types of DRAM ...
Page 2
... Current consumption (Through mode) Block diagram CD-DSP Ta=25˚C, V Symbol Min. Typ 8 1.8 DD DRAM YSRDATA YLRCK YSCK YFLAG YFCLK BU9348K YBLKCK ZSRDATA ZLRCK ZSCK Micro controller =3.0V) CC Max. Unit Conditions Shock proof mode Through mode 5.0 UC1~UC5 CLK(16.9344MHz) NRESET YDMUTE ...