HIT HM628511HJPI-12, HM628511HJPI-15 Datasheet
HM628511HI Series
4M High Speed SRAM (512-kword × 8-bit)
ADE-203-1035A (Z)
Rev. 1.0
Apr. 15, 1999
Description
The HM628511HI Series is a 4-Mbit high speed static RAM organized 512-k word × 8-bit. It has realized
high speed access time by employing CMOS process (4-transistor + 2-poly resistor memory cell)and high
speed circuit designing technology. It is most appropriate for the application which requires high speed, high
density memory and wide bit width configuration, such as cache and buffer memory in system. It is packaged
in 400-mil 36-pin plastic SOJ.
Features
• Single 5.0 V supply : 5.0 V ± 10 %
• Access time 12 /15 ns (max)
• Completely static memory
No clock or timing strobe required
• Equal access and cycle times
• Directly TTL compatible
All inputs and outputs
• Operating current : 160 / 140 mA (max)
• TTL standby current : 60 / 50 mA (max)
• CMOS standby current : 5 mA (max)
• Center VCC and VSS type pinout
• Temperature range: –40 to 85°C
HM628511HI Series
Ordering Information
Type No. Access time Package
HM628511HJPI-12
HM628511HJPI-15
Pin Arrangement
12 ns
15 ns
400-mil 36-pin plastic SOJ (CP-36D)
HM628511HJPI Series
A0
A1
A2
A3
A4
CS
I/O1
I/O2
V
CC
V
SS
I/O3
I/O4
WE
A5
A6
A7
A8
A9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
(Top View)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
NC
A18
A17
A16
A15
OE
I/O8
I/O7
V
SS
V
CC
I/O6
I/O5
A14
A13
A12
A11
A10
NC
2
Pin Description
Pin name Function
A0 to A18 Address input
I/O1 to I/O8 Data input/output
CS Chip select
OE Output enable
WE Write enable
V
CC
V
SS
Power supply
Ground
NC No connection
Block Diagram
HM628511HI Series
(LSB)
A1
A17
A7
A11
A16
A2
A6
A5
(MSB)
I/O1
.
.
.
I/O8
WE
CS
OE
Row
decoder
CS
Input
data
control
(LSB)
Memory matrix
256 rows × 8 columns ×
256 blocks × 8 bit
(4,194,304 bits)
Column I/O
Column decoder
A10 A8 A9 A12 A13 A14 A0 A18 A15 A3 A4
(MSB)
CS
Internal
voltage
generater
V
CC
V
SS
CS
3
HM628511HI Series
Operation Table
CS OE WE Mode VCC current I/O Ref. cycle
H ××Standby I
L H H Output disable I
L L H Read I
L H L Write I
L L L Write I
, I
SB
SB1
CC
CC
CC
CC
Note: ×: H or L
Absolute Maximum Ratings
Parameter Symbol Value Unit
Supply voltage relative to V
Voltage on any pin relative to V
SS
SS
Power dissipation P
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –55 to +125 °C
Storage temperature under bias Tbias –40 to +85 °C
Notes: 1. VT (min) = –2.0 V for pulse width (under shoot) ≤ 8 ns
2. V
(max) = VCC+2.0 V for pulse width (over shoot) ≤ 8 ns
T
V
CC
V
T
T
High-Z —
High-Z —
Dout Read cycle (1) to (3)
Din Write cycle (1)
Din Write cycle (2)
–0.5 to +7.0 V
–0.5*1 to VCC+0.5*
2
V
1.0 W
Recommended DC Operating Conditions (Ta = –40 to +85°C)
Parameter Symbol Min Typ Max Unit
3
Supply voltage V
Input voltage V
CC
VSS*
IH
V
IL
*
4
Notes: 1. VIL (min) = –2.0 V for pulse width (under shoot) ≤ 8 ns
2. V
(max) = VCC+2.0 V for pulse width (over shoot) ≤ 8 ns
IH
3. The supply voltage with all V
4. The supply voltage with all V
4
4.5 5.0 5.5 V
000V
2.2 — VCC + 0.5*
1
–0.5*
pins must be on the same level.
CC
pins must be on the same level.
SS
— 0.8 V
2
V
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