IS61NSCS25672 Datasheet, PDF (21/32 Pages) Integrated Silicon Solution, Inc – RAM 256K x 72, 512K x 36 18Mb Synchronous SRAM

IS61NSCS25672
IS61NSCS51236
ISSI ^®
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
tKHKH
Clock Cycle Time
tKHKL
Clock HIGH Time
tKLKH
Clock LOW Time
tKHCX1⁽²⁾
Clock High to Echo Clock Low-Z
tKHCH
Clock High to Echo Clock High
tCHCL⁽²⁾
Echo Clock High Time
tKLCL
Clock Low to Echo Clock Low
tCLCH⁽²⁾
Echo Clock Low Time
tKHCZ^{(1, 2)}
Clock High to Echo Clock High-Z
tKHQX1⁽¹⁾
Clock High to Output in Low-Z
tKHQV
Clock High to Output Valid
tKHQX
Clock High to Output Invalid
tKHQZ⁽¹⁾
Clock High to Output in High-Z
tCHQV⁽²⁾
Echo Clock High to Output Valid
tCHQX⁽²⁾
Output Invalid to Echo Clock High
tAVKH
Address Valid to Clock High
tKHAX
Clock High to Address Don’t Care
tEVKH
Enable Valid to Clock High
tKHEX
Clock High to Enable Don’t Care
tWVKH
Write Valid to Clock High
tKHWX
Clock High to Write Don’t Care
tBVKH
Byte Write Valid to Clock High
tKHBX
Clock High to Byte Write Don’t Care
tDVKH
Data In Valid to Clock High
tKHDX
Clock High to Data In Don’t Care
tadvVKH
ADV Valid to Clock High
tKHadvX
Clock High to ADV Don’t Care
Notes:
1. Measured at 100 mV from steady state. Not 100% tested.
2. Guaranteed by design. Not 100% tested.
3. For any specific temperature and voltage tKHCZ < tKHCX1.
-333
Min Max
3.0 —
1.2 —
1.2 —
0.5 —
0.5 1.5
tKHKL ±200 ps
0.5 1.5
tKLKH ±200 ps
— 1.5
0.5 —
— 1.6
0.5 —
0.5 1.6
— 0.4
— –0.4
0.6 —
0.4 —
0.6 —
0.4 —
0.6 —
0.4 —
0.6 —
0.4 —
0.6 —
0.4 —
0.6 —
0.4 —
-300
Min Max
3.3 —
1.3 —
1.3 —
0.5 —
0.5 1.7
tKHKL ±200 ps
0.5 1.7
tKLKH ±200 ps
— 1.7
0.5 —
— 1.8
0.5 —
0.5 1.8
— 0.4
— –0.4
0.7 —
0.4 —
0.7 —
0.4 —
0.7 —
0.4 —
0.7 —
0.4 —
0.7 —
0.4 —
0.7 —
0.4 —
-250
Min Max
4.0 —
1.5 —
1.5 —
0.5 —
0.5 2.0
tKHKL ±250 ps
0.5 2.0
tKLKH ±250 ps
— 2.0
0.5 —
— 2.1
0.5 —
0.5 2.1
— 0.5
— –0.5
0.8 —
0.5 —
0.8 —
0.5 —
0.8 —
0.5 —
0.8 —
0.5 —
0.8 —
0.5 —
0.8 —
0.5 —
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Integrated Silicon Solution, Inc. — 1-800-379-4774
21
ADVANCE INFORMATION Rev. 00A
06/19/01