HM9264B Series
64 k SRAM (8-kword
8-bit)
ADE-203-618C (Z)
Rev. 3.0
Nov. 1997
Description
The Hitachi HM9264B is 64k-bit static RAM organized 8-kword
8-bit. It realizes higher performance
and low power consumption by 1.5
m CMOS process technology. The device, packaged in 450 mil
SOP (foot print pitch width), 600 mil plastic DIP, is available for high density mounting.
Features
High speed
Fast access time: 85/100 ns (max)
Low power
Standby: 10
W (typ)
Operation: 15 mW (typ) (f = 1 MHz)
Single 5 V supply
Completely static memory
No clock or timing strobe required
Equal access and cycle times
Common data input and output
Three state output
Directly TTL compatible
All inputs and outputs
Battery backup operation capability
Note:
HM9264B series can't be applied for Aerospace, Aircraft, Nucleus Plants, Main Flame
Computers, Medical Life-support System, and Automobile Engine Control and Industrial
machines. (e.g. Communication Hubs, NC, and others.)
Ordering Information
Type No.
Access time
Package
HM9264BLFP-8L
HM9264BLFP-10L
85 ns
100 ns
450-mil, 28-pin plastic SOP(FP-28DA)
HM9264BLP-8L
HM9264BLP-10L
85 ns
100 ns
600-mil, 28-pin plastic DIP (DP-28)
HM9264B Series
Function Table
WE
CS1
CS2
OE
Mode
V
CC
current
I/O pin
Ref. cycle
H
Not selected (power down)
I
SB
, I
SB1
High-Z
--
L
Not selected (power down)
I
SB
, I
SB1
High-Z
--
H
L
H
H
Output disable
I
CC
High-Z
--
H
L
H
L
Read
I
CC
Dout
Read cycle (1)(3)
L
L
H
H
Write
I
CC
Din
Write cycle (1)
L
L
H
L
Write
I
CC
Din
Write cycle (2)
Note:
: H or L
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Power supply voltage
*1
V
CC
0.5 to +7.0
V
Terminal voltage
*1
V
T
0.5
*2
to V
CC
+ 0.3
*3
V
Power dissipation
P
T
1.0
W
Operating temperature
Topr
0 to + 70
C
Storage temperature
Tstg
55 to +125
C
Storage temperature under bias
Tbias
10 to +85
C
Notes: 1. Relative to V
SS
2. V
T
min: 3.0 V for pulse half-width
50 ns
3. Maximum voltage is 7.0 V
Recommended DC Operating Conditions (Ta = 0 to +70
C)
Parameter
Symbol
Min
Typ
Max
Unit
Supply voltage
V
CC
4.5
5.0
5.5
V
V
SS
0
0
0
V
Input high voltage
V
IH
2.2
--
V
CC
+ 0.3
V
Input low voltage
V
IL
0.3
*1
--
0.8
V
Note:
1. V
IL
min: 3.0 V for pulse half-width
50 ns
HM9264B Series
DC Characteristics (Ta = 0 to +70
C, V
CC
= 5 V
10%, V
SS
= 0 V)
Parameter
Symbol Min
Typ
*1
Max Unit
Test conditions
Input leakage current
|I
LI
|
--
--
2
A
Vin = V
SS
to V
CC
Output leakage current
|I
LO
|
--
--
2
A
CS1
= V
IH
or CS2 = V
IL
or
OE
= V
IH
or
WE
= V
IL
, V
I/O
= V
SS
to V
CC
Operating power supply
current
I
CCDC
--
7
15
mA
CS1
= V
IL
, CS2 = V
IH
, I
I/O
= 0 mA
others = V
IH
/V
IL
Average operating power
supply current
I
CC1
--
30
45
mA
Min cycle, duty = 100%,
CS1
= V
IL
, CS2 = V
IH
, I
I/O
= 0 mA
others = V
IH
/V
IL
I
CC2
--
3
5
mA
Cycle time = 1
s, duty = 100%, I
I/O
= 0 mA
CS1
0.2 V, CS2
V
CC
0.2 V,
V
IH
V
CC
0.2 V, V
IL
0.2 V
Standby power supply
current
I
SB
--
1
3
mA
CS1
= V
IH
, CS2 = V
IL
I
SB1
--
2
50
A
CS1
V
CC
0.2 V, CS2
V
CC
0.2 V or
0 V
CS2
0.2 V, 0 V
Vin
Output low voltage
V
OL
--
--
0.4
V
I
OL
= 2.1 mA
Output high voltage
V
OH
2.4
--
--
V
I
OH
= 1.0 mA
Notes: 1. Typical values are at V
CC
= 5.0 V, Ta = +25
C and not guaranteed.
Capacitance (Ta = 25
C, f = 1.0 MHz)
Parameter
Symbol
Min
Typ
Max
Unit
Test conditions
Input capacitance
*1
Cin
--
--
5
pF
Vin = 0 V
Input/output capacitance
*1
C
I/O
--
--
7
pF
V
I/O
= 0 V
Note:
1. This parameter is sampled and not 100% tested.
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