HM628512B Series
4 M SRAM (512-kword
×
8-bit)
ADE-203-903D (Z)
Rev. 3.0
Aug. 24, 1999
Description
The Hitachi HM628512B is a 4-Mbit static RAM organized 512-kword
×
8-bit. It realizes higher density,
higher performance and low power consumption by employing 0.35
µm
Hi-CMOS process technology. The
device, packaged in a 525-mil SOP (foot print pitch width) or 400-mil TSOP TYPE II or 600-mil plastic DIP,
is available for high density mounting. The HM628512B is suitable for battery backup system.
Features
•
Single 5 V supply
•
Access time: 55/70 ns (max)
•
Power dissipation
Active: 50 mW/MHz (typ)
Standby: 10
µW
(typ)
•
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
HM628512B Series
Ordering Information
Type No.
HM628512BLP-5
HM628512BLP-7
HM628512BLP-5SL
HM628512BLP-7SL
HM628512BLP-5UL
HM628512BLP-7UL
HM628512BLFP-5
HM628512BLFP-7
HM628512BLFP-5SL
HM628512BLFP-7SL
HM628512BLFP-5UL
HM628512BLFP-7UL
HM628512BLTT-5
HM628512BLTT-7
HM628512BLTT-5SL
HM628512BLTT-7SL
HM628512BLTT-5UL
HM628512BLTT-7UL
HM628512BLRR-5
HM628512BLRR-7
HM628512BLRR-5SL
HM628512BLRR-7SL
HM628512BLRR-5UL
HM628512BLRR-7UL
Access time
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
55 ns
70 ns
400-mil 32-pin plastic TSOP II reverse (TTP-32DR)
400-mil 32-pin plastic TSOP II (TTP-32D)
525-mil 32-pin plastic SOP (FP-32D)
Package
600-mil 32-pin plastic DIP (DP-32)
2
HM628512B Series
Function Table
WE
×
H
H
L
L
CS
H
L
L
L
L
OE
×
H
L
H
L
Mode
Not selected
Output disable
Read
Write
Write
V
CC
current
I
SB
, I
SB1
I
CC
I
CC
I
CC
I
CC
Dout pin
High-Z
High-Z
Dout
Din
Din
Ref. cycle
—
—
Read cycle
Write cycle (1)
Write cycle (2)
Note:
×:
H or L
Absolute Maximum Ratings
Parameter
Power supply voltage
Voltage on any pin relative to V
SS
Power dissipation
Operating temperature
Storage temperature
Storage temperature 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
–20 to +70
–55 to +125
–20 to +85
Unit
V
V
W
°C
°C
°C
Notes: 1. –3.0 V for pulse half-width
≤
30 ns
2. Maximum voltage is 7.0 V
Recommended DC Operating Conditions
(Ta = –20 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
–0.3
*1
Typ
5.0
0
—
—
Max
5.5
0
V
CC
+ 0.3
0.8
Unit
V
V
V
V
1. –3.0 V for pulse half-width
≤
30 ns
5
编程基础
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