IDT7028 Integrated Device Technology, IDT7028 Datasheet - Page 7

• Manufacturer Part Number: IDT7028
• Description: 64k X16 Dual-port Ram
• Manufacturer: Integrated Device Technology

AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage
NOTES:
1. Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2).
2. This parameter is guaranted by device characterization, but is not production tested.
3. To access RAM, CE= V
4. The specification for t
READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
t
t
t
RC
AA
ACE
AOE
OH
LZ
HZ
PU
PD
SOP
SAA
WC
EW
AW
AS
WP
WR
DW
HZ
DH
WZ
OW
SWRD
SPS
IDT7028L
High-Speed 64K x 16 Dual-Port Static RAM
Symbol
Symbol
and temperature, the actual t
Read Cycle Time
Chip Enable Access Time
Output Enable Access Time
Output Hold from Address Change
Output Low-Z Time
Output High-Z Time
Chip Enable to Power Up Time
Chip Disable to Power Down Time
Semaphore Flag Update Pulse (OE or SEM)
Semaphore Address Access Time
Chip Enable to End-of-Write
Data Valid to End-of-Write
Output High-Z Time
Data Hold Time
Output Active from End-of-Write
Address Access Time
Write Cycle Time
Address Valid to End-of-Write
Address Set-up Time
Write Pulse Width
Write Recovery Time
Write Enable to Output in High-Z
SEM Flag Write to Read Time
SEM Flag Contention Window
DH
must be met by the device supplying write data to the RAM under all operating conditions. Although t
IL
and SEM = V
(4)
DH
(1,2)
will always be smaller than the actual t
(1,2)
(1,2)
(3)
(4)
IH
(3)
. To access semaphore, CE = V
(2)
(1,2,4)
(1,2)
(2)
Parameter
Parameter
OW
IH
.
6.42
and SEM = V
7
IL
. Either condition must be valid for the entire t
Industrial and Commercial Temperature Ranges
Min.
Min.
____
____
____
____
____
____
____
____
Com'l Only
15
10
Com'l Only
15
12
12
12
10
3
3
0
0
0
0
0
5
5
7028L15
7028L15
DH
Max.
Max.
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
15
15
10
10
15
15
10
10
and t
OW
values will vary over voltage
Min.
Min.
Com'l & Ind
____
____
____
____
____
____
Com'l & Ind
____
____
20
20
10
15
15
15
15
3
3
0
0
0
0
0
5
5
7028L20
7028L20
EW
time.
Max.
Max.
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
20
20
20
20
12
10
10
10
4836 tbl 12
4836 tbl 13
Unit
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