HM62256B Series
Operation Table
WE
×
H
H
L
L
CS
H
L
L
L
L
OE
×
H
L
H
L
Mode
Standby
Output disable
Read
Write
Write
V
CC
current
I
SB
, I
SB1
I
CC
I
CC
I
CC
I
CC
I/O pin
High-Z
High-Z
Dout
Din
Din
Ref. cycle
—
—
Read cycle (1)to (3)
Write cycle (1)
Write cycle (2)
Note:
×:
H or L
Absolute Maximum Ratings
Parameter
Power supply voltage relative to V
SS
Terminal voltage on any pin relative to V
SS
Power dissipation
Operating temperature range
Storage temperature range
Storage temperature range under bias
Symbol
V
CC
V
T
P
T
Topr
Tstg
Tbias
Value
–0.5 to +7.0
–0.5*
1
to V
CC
+0.3*
2
1.0
0 to +70
–55 to +125
–10 to +85
Unit
V
V
W
°C
°C
°C
Notes: 1. V
T
min: –3.0 V for pulse half-width
≤
50 ns
2. Maximum voltage is 7.0 V
DC Operating Conditions
(Ta = 0 to +70°C)
Parameter
Supply voltage
Symbol
V
CC
V
SS
Input high voltage
Input low voltage
Note:
V
IH
V
IL
Min
4.5
0
2.2
–0.5*
1
Typ
5.0
0
—
—
Max
5.5
0
V
CC
+ 0.3
0.8
Unit
V
V
V
V
Notes
1. V
IL
min: –3.0 V for pulse half-width
≤
50 ns
5
HITACHI [ HITACHI SEMICONDUCTOR ]
