
512Kx36 & 1Mx18 Pipelined N
t
RAM
TM
- 9 -
Rev 1.0
December 1999
K7N161801M
K7N163601M
SYNCHRONOUS TRUTH TABLE
Notes :
1. X means "Don
′
t Care". 2. The rising edge of clock is symbolized by (
↑
).
3. A continue deselect cycle can only be enterd if a deselect cycle is executed first.
4. WRITE = L means Write operation in WRITE TRUTH TABLE.
WRITE = H means Read operation in WRITE TRUTH TABLE.
5. Operation finally depends on status of asynchronous input pins(ZZ and OE).
CS
1
CS
2
CS
2
ADV
WE
BWx
OE
CKE
CLK
ADDRESS ACCESSED
Operation
H
X
X
L
X
X
X
L
↑
↑
↑
↑
↑
↑
↑
↑
↑
N/A
Not Selected
X
L
X
L
X
X
X
L
N/A
Not Selected
X
X
H
L
X
X
X
L
N/A
Not Selected
X
X
X
H
X
X
X
L
N/A
Not Selected Continue
L
H
L
L
H
X
L
L
External Address
Begin Burst Read Cycle
X
X
X
H
X
X
L
L
Next Address
Continue Burst Read Cycle
L
H
L
L
H
X
H
L
External Address
NOP/Dummy Read
X
X
X
H
X
X
H
L
Next Address
Dummy Read
L
H
L
L
L
L
X
L
External Address
Begin Burst Write Cycle
X
X
X
H
X
L
X
L
↑
↑
↑
↑
Next Address
Continue Burst Write Cycle
L
H
L
L
L
H
X
L
N/A
NOP/Write Abort
X
X
X
H
X
H
X
L
Next Address
Write Abort
X
X
X
X
X
X
X
H
Current Address
Ignore Clock
WRITE TRUTH TABLE
(x36)
Notes :
1. X means "Don
′
t Care".
2. All inputs in this table must meet setup and hold time around the rising edge of CLK(
↑
).
WE
BWa
BWb
BWc
BWd
OPERATION
H
X
X
X
X
READ
L
L
H
H
H
WRITE BYTE a
L
H
L
H
H
WRITE BYTE b
L
H
H
L
H
WRITE BYTE c
L
H
H
H
L
WRITE BYTE d
L
L
L
L
L
WRITE ALL BYTEs
L
H
H
H
H
WRITE ABORT/NOP
TRUTH TABLES
WRITE TRUTH TABLE
(x18)
Notes :
1. X means "Don
′
t Care".
2. All inputs in this table must meet setup and hold time around the rising edge of CLK(
↑
).
WE
BWa
BWb
OPERATION
H
X
X
READ
L
L
H
WRITE BYTE a
L
H
L
WRITE BYTE b
L
L
L
WRITE ALL BYTEs
L
H
H
WRITE ABORT/NOP