HT62L256-28SOP-A HOLTEK [Holtek Semiconductor Inc], HT62L256-28SOP-A Datasheet - Page 3

• Manufacturer Part Number: HT62L256-28SOP-A
• Description: CMOS 32Kx8 Low Power SRAM
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

A.C. Characteristics
Note:
Rev. 0.00
t
t
t
t
t
t
t
t
t
Read cycle
Write cycle
t
t
t
t
t
t
t
t
t
t
RC
AA
ACS
AOE
CLZ*
OLZ
CHZ
OHZ
OH
WC
CW
AS
AW
WP
WR
WHZ
DW
DH
OW
Symbol
*
*
*
1. A write cycle occurs during the overlap of a low CS and a low WE
2. OE may be both high and low in a write cycle
3. t
4. t
5. t
6. t
7. When the I/O pins are in data output mode, they should not be forced with inverse signals
AS
WP
WR
WHZ
Read Cycle Time
Address Access Time
Chip Selection Access Time
Output Enable to Valid Outputs
Chip Selection to Output in Low-Z
Output Enabled to Output in Low-Z
Chip Deselected to Output in High-Z
Output Disable to Output in High-Z
Output Hold from Address Change
Write Cycle Time
Chip Selection to End of Write
Address Setup Time
Address Valid to End of Write
Write Pulse Width
Write Recovery Time
Write to Output in High Z
Data Valid to End of Write
Data Hold from End of Write
Output Active from End of Write
, t
is specified from CS or WE, whichever occurs last
is an overlap time of a low CS and a low WE
is specified by the time when DATA OUT is floating and not defined by the output level
DW
and t
DH
are specified from CS or WE, whichever occurs first
Parameter
Preliminary
3
Min.
70
10
10
70
60
60
50
30
5
0
0
0
5
Typ.
Ta=25 C, V
Max.
70
70
35
25
25
20
August 15, 2002
HT62L256
DD
=3.0V 10%
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns