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HM628512BI Datasheet
Recommendation HM628512BI Datasheet
Part HM628512BI
Description 4 M SRAM (512-kword x 8-bit)
Feature HM628512BI; HM628512BI Series 4 M SRAM (512-kword × 8-bit) ADE-203-935C (Z) Rev. 2.0 Aug. 24, 1999 Description .
Manufacture Hitachi Semiconductor
Datasheet
Download HM628512BI Datasheet




Hitachi Semiconductor HM628512BI
HM628512BI Series
4 M SRAM (512-kword × 8-bit)
ADE-203-935C (Z)
Rev. 2.0
Aug. 24, 1999
Description
The Hitachi HM628512BI is a 4-Mbit static RAM organized 512-kword × 8-bit. HM628512BI Series has
realized higher density, higher performance and low power consumption by employing Hi-CMOS process
technology. The HM628512BI Series offers low power standby power dissipation; therefore, it is suitable for
battery backup systems. It has packaged in 32-pin SOP, 32-pin TSOP II and 32-pin DIP.
Features
Single 5 V supply
Access time: 70/85 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
Operating temperature: –40 to +85˚C



Hitachi Semiconductor HM628512BI
HM628512BI Series
Ordering Information
Type No.
HM628512BLPI-7
HM628512BLPI-8
HM628512BLFPI-7
HM628512BLFPI-8
HM628512BLTTI-7
HM628512BLTTI-8
HM628512BLRRI-7
HM628512BLRRI-8
Access time
70 ns
85 ns
70 ns
85 ns
70 ns
85 ns
70 ns
85 ns
Package
600-mil 32-pin plastic DIP (DP-32)
525-mil 32-pin plastic SOP (FP-32D)
400-mil 32-pin plastic TSOP II (TTP-32D)
400-mil 32-pin plastic TSOP II reverse (TTP-32DR)
2



Hitachi Semiconductor HM628512BI
Pin Arrangement
HM628512BI Series
HM628512BLPI Series
HM628512BLFPI Series
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 A15
30 A17
29 WE
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CS
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
(Top view)
Pin Description
Pin name
A0 to A18
I/O0 to I/O7
CS
OE
WE
VCC
VSS
Function
Address input
Data input/output
Chip select
Output enable
Write enable
Power supply
Ground
HM628512BLTTI Series
A18 1
A16 2
A14 3
A12 4
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
I/O0 13
I/O1 14
I/O2 15
VSS 16
(Top view)
32 VCC
31 A15
30 A17
29 WE
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CS
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
VCC 32
A15 31
A17 30
WE 29
A13 28
A8 27
A9 26
A11 25
OE 24
A10 23
CS 22
I/O7 21
I/O6 20
I/O5 19
I/O4 18
I/O3 17
HM628512BLRRI Series
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
(Top view)
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
3







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