k7a803600b Samsung Semiconductor, Inc., k7a803600b Datasheet - Page 8

• Manufacturer Part Number: k7a803600b
• Description: 256kx36 & 512kx18-bit Synchronous Pipelined Burst Sram
• Manufacturer: Samsung Semiconductor, Inc.

K7A801800B
K7A803600B
TRUTH TABLES
SYNCHRONOUS TRUTH TABLE
NOTE : 1. X means "Don′t Care".
WRITE TRUTH TABLE
Notes : 1. X means "Don′t Care".
WRITE TRUTH TABLE
Notes : 1. X means "Don′t Care".
CS
H
X
H
X
H
X
H
X
H
L
L
L
L
L
L
L
1
GW
GW
H
H
H
H
H
L
2. All inputs in this table must meet setup and hold time around the rising edge of CLK(
3. WRITE = L means Write operation in WRITE TRUTH TABLE.
4. Operation finally depends on status of asynchronous input pins(ZZ and OE).
H
H
H
H
H
H
2. All inputs in this table must meet setup and hold time around the rising edge of CLK(↑).
L
WRITE = H means Read operation in WRITE TRUTH TABLE.
CS
X
X
X
H
H
H
X
X
X
X
X
X
X
X
L
L
2
CS
X
X
H
X
H
X
X
X
X
X
X
X
X
L
L
L
BW
2
BW
H
X
L
L
L
L
H
X
L
L
L
L
L
ADSP ADSC
(x18)
(x36)
X
X
X
H
H
H
X
H
X
H
X
H
X
L
L
L
2. The rising edge of clock is symbolized by ↑.
X
X
X
H
H
H
H
H
H
H
H
L
L
L
L
L
WEa
WEa
X
H
H
X
L
L
H
H
H
X
X
L
L
ADV
X
X
X
X
X
X
X
X
H
H
H
H
L
L
L
L
WRITE
WEb
X
X
X
X
X
X
H
H
H
H
H
L
L
L
L
L
WEb
X
H
H
X
L
L
H
H
H
X
L
L
X
256Kx36 & 512Kx18 Synchronous SRAM
CLK
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
- 8 -
ADDRESS ACCESSED
WEc
X
H
H
H
X
L
L
External Address
External Address
External Address
Current Address
Current Address
Current Address
Current Address
Next Address
Next Address
Next Address
Next Address
N/A
N/A
N/A
N/A
N/A
↑
).
WEd
X
H
H
H
X
L
L
WRITE ALL BYTEs
WRITE ALL BYTEs
WRITE BYTE a
WRITE BYTE b
OPERATION
READ
READ
Continue Burst Read Cycle
Continue Burst Read Cycle
Continue Burst Write Cycle
Continue Burst Write Cycle
Suspend Burst Read Cycle
Suspend Burst Read Cycle
Suspend Burst Write Cycle
Suspend Burst Write Cycle
Begin Burst Read Cycle
Begin Burst Write Cycle
Begin Burst Read Cycle
Rev. 5.0 April 2006
WRITE BYTE c and d
WRITE ALL BYTEs
WRITE ALL BYTEs
WRITE BYTE a
WRITE BYTE b
OPERATION
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
OPERATION
READ
READ