HM62256A Series
HM62256A Series
Function Table
WE
CS
OE
Mode
VCC current
I/O pin
Ref. cycle
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
X
H
X
Not selected
ISB, ISB1
High-Z
โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
H
L
H
Output disable
ICC
High-Z
โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
H
L
L
Read
ICC
Dout
Read cycle (1)โ(3)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
L
L
H
Write
ICC
Din
Write cycle (1)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
L
L
L
Write
ICC
Din
Write cycle (2)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Note: X: H or L
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Voltage on any pin relative to VSS
VT
โ0.5*1 to +7.0
V
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Power dissipation
PT
1.0
W
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Operating temperature
Topr
0 to +70
ยฐC
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Storage temperature
Tstg
โ55 to +125
ยฐC
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Storage temperature under bias
Tbias
โ10 to +85
ยฐC
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Note: 1. VT min = โ3.0 V for pulse half-width โค 50 ns
Recommended DC Operating Conditions (Ta = 0 to +70ยฐC)
Parameter
Symbol
Min
Typ
Max
Unit
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Supply voltage
VCC
4.5
5.0
5.5
V
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
VSS
0
0
0
V
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Input high (logic 1) voltage
VIH
2.2
โ
6.0
V
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Input low (logic 0) voltage
VIL
โ0.5*1
โ
0.8
V
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
Note: 1. VIL min = โ3.0 V for pulse half-width โค 50 ns
4