k4s161622e Samsung Semiconductor, Inc., k4s161622e Datasheet - Page 22
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k4s161622e
Manufacturer Part Number
k4s161622e
Description
1m X 16 Sdram
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K4S161622E.pdf
(42 pages)
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K4S161622E
FUNCTION TRUTH TABLE (TABLE 1)
Precharge
Precharge
Read with
Write with
charging
Current
Active
Read
IDLE
Write
State
Auto
Auto
Row
Pre-
CS
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS
X
H
H
H
X
H
H
H
H
X
H
H
H
H
X
H
H
H
H
X
H
H
H
X
H
H
H
X
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CAS
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
X
L
L
L
X
L
L
L
X
L
L
L
X
L
L
L
X
L
L
X
L
L
X
L
WE
X
H
X
H
H
X
H
H
H
X
X
H
H
H
X
X
H
H
H
X
X
H
X
X
X
X
H
X
X
X
X
H
X
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
OP code
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
BA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CA, A
CA, A
CA, A
CA, A
CA, A
CA, A
CA, A
CA, A
CA, A
RA, RA
RA, RA
OP code
A
A
A
A
A
ADDR
10
10
10
10
10
RA
RA
RA
RA
CA
RA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
/AP
/AP
/AP
/AP
/AP
10
10
10
10
10
10
10
10
10
/AP
/AP
/AP
/AP
/AP
/AP
/AP
/AP
/AP
10
10
NOP
NOP
ILLEGAL
ILLEGAL
Row (& Bank) Active ; Latch RA
NOP
Auto Refresh or Self Refresh
Mode Register Access
NOP
NOP
ILLEGAL
Begin Read ; latch CA ; determine AP
Begin Write ; latch CA ; determine AP
ILLEGAL
Precharge
ILLEGAL
NOP (Continue Burst to End --> Row Active)
NOP (Continue Burst to End --> Row Active)
Term burst --> Row active
Term burst, New Read, Determine AP
Term burst, New Write, Determine AP
ILLEGAL
Term burst, Precharge timing for Reads
ILLEGAL
NOP (Continue Burst to End --> Row Active)
NOP (Continue Burst to End --> Row Active)
Term burst --> Row active
Term burst, New read, Determine AP
Term burst, New Write, Determine AP
ILLEGAL
Term burst, precharge timing for Writes
ILLEGAL
NOP (Continue Burst to End --> Precharge)
NOP (Continue Burst to End --> Precharge)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Continue Burst to End --> Precharge)
NOP (Continue Burst to End --> Precharge)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP --> Idle after t
NOP --> Idle after t
ILLEGAL
ILLEGAL
ILLEGAL
NOP --> Idle after t
RP
RP
RP
L
ACTION
CMOS SDRAM
Rev 1.1 Jan '03
Note
2
2
4
5
5
2
2
3
2
3
3
2
3
2
2
2
2
2
4