K4G323222A Datasheet, PDF (47/49 Pages) Samsung semiconductor – 32Mbit SGRAM

K4G323222A
CMOS SGRAM
FUNCTION TRUTH TABLE(TABLE 1, Continued)
Current
State
Write
Read with
Auto
Precharge
Write with
Auto
Precharge
Precharging
Block
Write
Recovering
Row
Activating
Refreshing
CS RAS CAS WE DSF BA
L
L
H
H
X
BA
L
L
H
L
L
BA
L
L
H
L
H
X
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
H
X
X
L
H
H
L
X
X
L
H
L
H
X
BA
L
H
L
L
X
BA
L
L
H
X
X
BA
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
H
X
X
L
H
H
L
X
X
L
H
L
H
X
BA
L
H
L
L
X
BA
L
L
H
X
X
BA
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
H
X
X
L
H
H
L
X
X
L
H
L
X
X
BA
L
L
H
H
X
BA
L
L
H
L
X
BA
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
H
X
X
L
H
H
L
X
X
L
H
L
X
X
BA
L
L
H
H
X
BA
L
L
H
L
X
BA
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
H
X
X
L
H
H
L
X
X
L
H
L
X
X
BA
L
L
H
H
X
BA
L
L
H
L
X
BA
L
L
L
X
X
X
H
X
X
X
X
X
L
H
H
X
X
X
L
H
L
X
X
X
L
L
H
X
X
X
L
L
L
X
X
X
ADDR
ACTION
RA
PA
X
X
X
X
X
CA,AP
CA,AP
RA,PA
X
X
X
X
CA,AP
CA,AP
RA,PA
X
X
X
X
CA,AP
RA
PA
X
X
X
X
CA,AP
RA
PA
X
X
X
X
CA,AP
RA
PA
X
X
X
X
X
X
ILLEGAL
Term Burst : Precharge timing for Writes
ILLEGAL
ILLEGAL
NOP(Continue Burst to End --> Precharge)
NOP(Continue Burst to End --> Precharge)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Continue Burst to End --> Precharge)
NOP(Continue Burst to End --> Precharge)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP --> Idle after tRP
NOP --> Idle after tRP
ILLEGAL
ILLEGAL
ILLEGAL
NOP --> Idle after tRP
ILLEGAL
NOP --> Row Active after tBWC
NOP --> Row Active after tBWC
ILLEGAL
ILLEGAL
ILLEGAL
Term Block Write : Precharge timing for Block Write
ILLEGAL
NOP --> Row Active after tRCD
NOP --> Row Active after tRCD
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP --> Idle after tRC
NOP --> Idle after tRC
ILLEGAL
ILLEGAL
ILLEGAL
NOTE
2
3
2
2
2
2
2
2
2
2
2
4
2
2
2
2
2
2
2
2
Rev. 1.3 (Dec. 2000)
- 47