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IC BLOCK DIAGRAM & DESCRIPTION
U0803 41LV16256-35T(DRAM)
OE
27
WE
13
CAS
LCAS
29
CLOCK
CAS
GENERATOR
UCAS
28
RAS
RAS
14
CLOCK
GENERATOR
REFRESH
COUNTER
ADDRESS
BUFFERS
16~19,
A0-A8
22~26
U0902,U0903 B1117N(REGULATOR)
8-Pin Sur face M ount
8-Pin Sur face M ount
8-Pin Sur face M ount
8-Pin Sur face M ount
SOT - 223
SOT - 223
ADJ
ADJ
IN
IN
1
1
1
1
8
8
8
8
Tab V
Tab V
NC
NC
2
2
2
2
7
7
7
7
IN
IN
3
3
3
3
6
6
6
6
OUT
OUT
IN
IN
OUT
OUT
4
4
4
4
5
5
5
5
N.C.
N.C.
Adj/GND
Adj/GND
Top View
Top View
Top View
Top View
Fr ont View
Fr ont View
U0901 FS8860(REGULATOR)
IN
Shutdown
Logic
1.25V
Bandgap
Reference
WE
OE
CONTROL
CONTROL
LOGICS
LOGIC
DATA I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
MEMORY ARRAY
262,144 x 16
SOT -223
SOT -223
SOT -223-5
SOT -223-5
Ta b V
V
V
V
OUT
OUT
OUT
OUT
#1 Se nse
OUT
OUT
#2 Adj/GND
#2 Adj/GND
#3 O
#3 O UT
#4 C ont rol
#5 V
#5 V
OUT
OUT
IN
IN
1
1
2
2
3
3
4
4
5
5
Front View
Front View
Current Limit
Thermal
Protection
R1
R2
IC102 SFH615A-3(OP. SENSOR)
Anode
Cathode
2~5,
7~10,
I/O0-
31~34,
I/O15
36~39
TO-252
1
2
3
IN
IN
ADJ/GN
V
V
OUT
IN
Front
IC101 KA5M02659(POWER SW)
OUT
GND
- 12 -
Collector
1
4
3
Emitter
2
V
V
V
5
5
V
V
V
4
4
OUTPUT
OUTPUT
3
3
ADJ/GND.
ADJ/GND.
2
2
SENSE
SENSE
1
1
TO-263-5 Package
TO-263-5 Package
POWER
POWER
POWER
CONTROL
CONTROL
CONTROL
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