Samsung DVD-812 Service Manual page 10

2-1-3 DIC2 (KM416C254D ; CMOS 4M DRAM)
WE
CASL
CASH
9
D0
D1
D2
D3
D4
D5
D6
D7
D8
9
RAS
PIN NO.
16~19, 22~26
14
28
29
13
27
2~5, 7~10, 31~34, 36~39
1, 6, 20
21, 35, 40
11, 12, 15, 30
Samsung Electronics
CAS
NO.2 CLOCK
GENERATOR
COLUMN
ADDRESS
BUFFER
REFRESH
CONTROLLER
REFRESH
COUNTER
9
ROW.
9
ADDRESS
BUFFERS(9)
NO.1CLOCK
GENERATOR
SYM.
A0~A8
RAS
CASH
CASL
WE
OE
I/O0~I/O15
Vcc
Vss
NC
CONTROL
LOGIC
COLUMN
9
DECODER
512
SENSE AMPLIFIERS
VO GATING
512x512x16
512 MEMORY
ARRAY
TYPE
Input Address Input
Input Row Address Strobe
Input Column Address Strobe/Upper Byte Control
Input Column Address Strobe/Lower Byte Control
Input Write Enable
Input Output Enable
Input/Output Data Input/Output
Supply Power, 5V
Ground Ground
- No Connect
DATA-IN BUFFER
DATA-OUT
BUFFER
16
8 8
512x16
DESCRITION
Reference Information
IO0
16
IO15
OE
Vcc
Vss
2-3