LH540235M-20 SHARP [Sharp Electrionic Components], LH540235M-20 Datasheet - Page 9

• Manufacturer Part Number: LH540235M-20
• Description: 2048 x 18 / 4096 x 18 Synchronous FIFOs
• Manufacturer: SHARP [Sharp Electrionic Components]

BOLD ITALIC = Enhanced Operating Mode
2048 x 18/4096 x 18 Synchronous FIFOs
AC ELECTRICAL CHARACTERISTICS
NOTES:
1. Pulse widths less than the stated minimum values may cause incorrect operation.
2. Values are guaranteed by design; not currently tested.
3. These times also apply to the Programmable-Almost-Full and Half-Full flags when they are synchronized to WCLK.
4. These times also apply to the Half-Full and Programmable-Almost-Empty flags when they are synchronized to RCLK.
SYMBOL
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CC
A
CLK
CLKH
CLKL
DS
DH
ENS
ENH
RS
RSS
RSR
RSF
OLZ
OE
OHZ
WFF
REF
PAF
PAE
HF
XO
XI
XIS
SKEW1
SKEW2
PAFS
PAES
HFS
Clock Cycle Frequency
Data Access Time
Clock Cycle Time
Clock HIGH Time
Clock LOW Time
Data Setup Time
Data Hold Time
Enable Setup Time
Enable Hold Time
Reset Pulse Width
Reset Setup Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z
Output Enable to Output Valid
Output Enable to Output in High-Z
Write Clock to Full Flag
Read Clock to Empty Flag
Clock to Programmable Almost-Full Flag (IDT-Compatible
Operating Mode)
Clock to Programmable Almost-Empty Flag (IDT-Compatible
Operating Mode)
Clock to Half-Full Flag (IDT-Compatible Operating Mode)
Clock to Programmable Almost-Full Flag (Enhanced
Operating Mode)
Clock to Programmable Almost-Empty Flag (Enhanced
Operating Mode)
Clock to Half-Full Flag (Enhanced Operating Mode)
Clock to Expansion-Out
Expansion-In Pulse Width
Expansion-In Setup Time
Skew Time Between Read Clock and Write Clock for Full Flag
Skew Time Between Write Clock and Read Clock for Empty Flag
2
1
2
PARAMETER
2
2
Rev. B, 8/8/96
3
4
MIN.
20
20
12
12
2
8
8
5
2
5
2
0
1
8
8
9
9
–20
MAX.
50
12
30
12
12
14
14
14
14
14
14
12
9
9
MIN.
25
10
10
25
15
15
11
11
3
6
2
6
2
0
1
9
9
–25
MAX.
35
40
15
12
12
15
15
17
17
17
17
17
17
15
LH540235/45
MIN.
35
14
14
35
20
20
13
14
16
16
3
7
2
7
2
0
1
-35
MAX.
28.6
20
40
15
15
20
20
23
23
23
23
23
23
20
9