HANBit
HMN2M8D
POWER-DOWN/POWER-UP CYCLE
(T
A
= T
OPR,
V
CC
=5V)
PARAMETER
V
CC
slew, 4.75 to 4.25V
V
CC
slew, 4.75 to V
SO
V
CC
slew, V
SO
to V
PFD
(max)
SYMBOL
t
PF
t
FS
t
PU
Time during which SRAM
is write-protected after V
CC
passes V
PFD
on power-up.
T
A
= 25℃
Delay after Vcc slews down
past V
PFD
before SRAM is
Write-protected.
CONDITIONS
MIN
300
10
0
TYP.
-
-
-
MAX
-
-
-
UNIT
㎲
㎲
㎲
Chip enable recovery time
Data-retention time in
Absence of V
CC
t
CER
40
80
120
ms
t
DR
5
-
-
years
Write-protect time
t
WPT
40
100
150
㎲
TIMING WAVEFORM
- Read Cycle No.1 (Address Access)*
1,2
t
RC
Address
t
ACC
t
OH
D
OUT
Previous Data Valid
Data Valid
- Read Cycle No.2 (/CE Access)
*1,3,4
/CE
t
ACE
t
CLZ
D
OUT
High-Z
t
RC
t
CHZ
High-Z
URL : www.hbe.co.kr
Rev. 1.0 (May, 2002)
6
HANBit Electronics Co.,Ltd