HM62V16258C Series
4 M SRAM (256-kword
×
16-bit)
ADE-203-1100A (Z)
Preliminary
Rev. 0.1
Oct. 21, 1999
Description
The Hitachi HM62V16258C Series is 4-Mbit static RAM organized 262,144-word
×
16-bit. HM62V16258C
Series has realized higher density, higher performance and low power consumption by employing Hi-CMOS
process technology. It offers low power standby power dissipation; therefore, it is suitable for battery backup
systems. It is packaged in standard 44-pin plastic TSOPII.
Features
•
•
•
Single 2.5 V and 3.0 V supply: 2.2 V to 3.6 V
Fast access time: 55 ns (max)
Power dissipation:
Active: TBD (typ)
Standby: 2.4
µW
(typ)
Completely static memory.
No clock or timing strobe required
Equal access and cycle times
Common data input and output.
Three state output
Battery backup operation.
•
•
•
•
Preliminary: The specification of this device are subject to change without notice. Please contact your
nearest Hitachi’s Sales Dept. regarding specification.
HM62V16258C Series
Operation Table
CS
H
×
L
L
L
L
L
L
L
WE
×
×
H
H
H
L
L
L
H
OE
×
×
L
L
L
×
×
×
H
UB
×
H
L
H
L
L
H
L
×
LB
×
H
L
L
H
L
L
H
×
I/O0 to I/O7
High-Z
High-Z
Dout
Dout
High-Z
Din
Din
High-Z
High-Z
I/O8 to I/O15
High-Z
High-Z
Dout
High-Z
Dout
Din
High-Z
Din
High-Z
Operation
Standby
Standby
Read
Lower byte read
Upper byte read
Write
Lower byte write
Upper byte write
Output disable
Note: H: V
IH
, L: V
IL
,
×:
V
IH
or V
IL
Absolute Maximum Ratings
Parameter
Power supply voltage relative to V
SS
Terminal voltage on any pin relative to V
SS
Power dissipation
Storage temperature range
Storage temperature range under bias
Symbol
V
CC
V
T
P
T
Tstg
Tbias
Value
–0.5 to + 4.6
–0.5*
1
to V
CC
+ 0.3*
2
1.0
–55 to +125
–20 to +85
Unit
V
V
W
°C
°C
Notes: 1. V
T
min: –3.0 V for pulse half-width
≤
30 ns.
2. Maximum voltage is +4.6 V.
DC Operating Conditions
Parameter
Supply voltage
Symbol
V
CC
V
SS
Input high voltage
V
CC
= 2.2 V to 2.7 V V
IH
V
CC
= 2.7 V to 3.6 V V
IH
Input low voltage
V
CC
= 2.2 V to 2.7 V V
IL
V
CC
= 2.7 V to 3.6 V V
IL
Ambient temperature range
Note:
Ta
Min
2.2
0
2.0
2.0
–0.2
–0.3
–20
Typ
2.5/3.0
0
—
—
—
—
—
Max
3.6
0
V
CC
+ 0.3
V
CC
+ 0.3
0.4
0.6
70
Unit
V
V
V
V
V
V
°C
1
1
Note
1. V
IL
min: –3.0 V for pulse half-width
≤
30 ns.
5
stm32/stm8
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