FEAST Fast Ethernet Controller for PCMCIA and Generic 16-Bit Applications
APPLICATION NOTE
The following is the list of potential SRAMs and suppliers for the LAN91C110 Rev B. These SRAMs meet all timing
requirements for LAN91C110 Rev B. But any other SRAM that meets the specification will also work with the
LAN91C110 Rev B.
Min ≥ 3ns Max≤15ns Min≤25ns Max≤12ns Max≤8ns Min≤12ns Min≤12ns Min≤15ns
Manufacturer
Part #
t51 Data
Hold after Address
Address Valid to
Change Data Valid
t38
R/W
Output
nROE
Address
Data
Setup to
End of
Write
5
Write
Pulse
Width
Cycle
Enable to Disable to Valid to
Output
Valid
5
Output in
High Z
5
End of
Write
9
ISSI
ISSI
ISSI
IS61C3216-10
IS61C3216-12
IS61C3216-15
3
3
3
10
12
15
10
12
15
7
8
5
7
6
7
10
11
6
7
10
Alliance
Alliance
AS7C256-12
AS7C256-15
3
3
12
15
12
15
5
6
3
4
8
10
6
8
8
9
Winbond
Winbond
24257AJ-10
24257AJ-12
3
3
10
12
10
12
5
6
5
6
9
10
6
7
9
10
Cypress
Cypress
Cypress
CY7C199-10VC
CY7C199-12VC
CY7C199-15VC
3
3
3
10
12
15
10
12
15
5
5
7
5
5
7
7
9
10
5
8
9
7
8
9
Cypress
Cypress
Cypress
CY7C1021-10
CY7C1021-12
CY7C1021-15
3
3
3
10
12
15
10
12
15
5
6
7
5
6
7
7
5
6
8
7
8
8
10
10
IDT
IDT71016S12
4
12
12
7
6
9
7
9
IDT
IDT71016S15
4
15
15
8
6
10
8
10
IDT
IDT71256SA12
3
12
12
6
6
9
6
8
IDT
SamSung
SamSung
IDT71256SA15
K6E0808C1E-C10
K6E0808C1E-C12
3
3
3
15
10
12
15
10
12
7
5
6
6
5
6
10
7
5
6
10
8
8
9
9
SamSung
K6E0808C1E-C15
3
15
15
7
7
10
7
10
SMSC DS – LAN91C110 REV. B
Page 52
Rev. 09/05/02
SMSC [ SMSC CORPORATION ]
