K7N161831B(2005) Ver la hoja de datos (PDF) - Samsung
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K7N161831B Datasheet PDF : 24 Pages
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K7N163631B
K7N161831B
Preliminary
512Kx36 & 1Mx18 Pipelined NtRAMTM
TRUTH TABLES
SYNCHRONOUS TRUTH TABLE
CS1 CS2 CS2 ADV WE BWx OE CKE CLK
H
X
X
L
X
X
X
L
↑
ADDRESS ACCESSED
N/A
X
L
X
L
X
X
X
L
↑
N/A
X
X
H
L
X
X
X
L
↑
N/A
X
X
X
H
X
X
X
L
↑
N/A
L
H
L
L
H
X
L
L
↑
External Address
X
X
X
H
X
X
L
L
↑
L
H
L
L
H
X
H
L
↑
X
X
X
H
X
X
H
L
↑
L
H
L
L
L
L
X
L
↑
Next Address
External Address
Next Address
External Address
X
X
X
H
X
L
X
L
↑
L
H
L
L
L
H
X
L
↑
X
X
X
H
X
H
X
L
↑
Next Address
N/A
Next Address
X
X
X
X
X
X
X
H
↑
Current Address
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).
Operation
Not Selected
Not Selected
Not Selected
Not Selected Continue
Begin Burst Read Cycle
Continue Burst Read Cycle
NOP/Dummy Read
Dummy Read
Begin Burst Write Cycle
Continue Burst Write Cycle
NOP/Write Abort
Write Abort
Ignore Clock
WRITE TRUTH TABLE(x36)
WE
BWa
BWb
BWc
BWd
H
X
X
X
X
L
L
H
H
H
L
H
L
H
H
L
H
H
L
H
L
H
H
H
L
L
L
L
L
L
L
H
H
H
H
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(↑).
WRITE TRUTH TABLE(x18)
WE
BWa
BWb
H
X
X
L
L
H
L
H
L
L
L
L
L
H
H
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(↑).
OPERATION
READ
WRITE BYTE a
WRITE BYTE b
WRITE BYTE c
WRITE BYTE d
WRITE ALL BYTEs
WRITE ABORT/NOP
OPERATION
READ
WRITE BYTE a
WRITE BYTE b
WRITE ALL BYTEs
WRITE ABORT/NOP
- 10 -
Jan. 2005
Rev 0.4
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