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K4S641632E-TC75 (IC504) :CMOS SDRAM
1.Pin layout
2.Block diagram
CLK
ADD
LCKE
LRAS
CLK
3.Pin functions
Symbol
CLK
CS
CKE
A0~A11
BS0,1
RAS
CAS
WE
LDQM
DQ0~15
Vcc/Vss
Vccq/Vssq
N.C
Bank select
LCBR
LWE
LCAS
Timing register
CKE
CS
RAS
CAS
Description
System clock
Chip select
Clock enable
address
Bank address strobe
Row address strobe
column address strobe
Write enable
Data input/output mask
Data input/output
Power supply/ground
Data output power/ground
Non connect
Data input register
1M x 16
1M x 16
1M x 16
1M x 16
Column decoder
Latency & Burst length
Programming register
LWCBR
WE
L(U)DQM
XV-LTR1
LWE
LDQM
DQI
LDQM
1-27
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