HM6208H Series
65,536-word
×
4-bit High Speed CMOS Static RAM
Features
•
Single 5 V supply and high density 24-pin package
•
High speed: Access time 25/35/45 ns (max)
•
Low power
Operation: 300 mW (typ)
Standby: 100
µW
(typ)
30
µW
(typ) (L-version)
•
Completely static memory required
No clock or timing strobe required
•
Equal access and cycle time
•
Directly TTL compatible: All inputs and outputs
•
Battery backup operation capability (L-version)
Ordering Information
Type No.
HM6208HP-25
HM6208HP-35
HM6208HP-45
HM6208HLP-25
HM6208HLP-35
HM6208HLP-45
HM6208HJP-25
HM6208HJP-35
HM6208HJP-45
HM6208HLJP-25
HM6208HLJP-35
HM6208HLJP-45
Access Time
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
300-mil, 24-pin SOJ (CP-24D)
Package
300-mil, 24-pin plastic DIP (DP-24NC)
HM6208H Series
Pin Arrangement
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
CS
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
(Top view)
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
A15
A14
A13
A12
A11
A10
I/O1
I/O2
I/O3
I/O4
WE
Pin Description
Pin Name
A0–A15
I/O1–I/O4
CS
WE
V
CC
V
SS
Function
Address
lnput/output
Chip select
Write enable
Power supply
Ground
2
HM6208H Series
Block Diagram
A14
A15
A0
A1
A2
A3
A4
A5
I/O1
I/O2
I/O3
I/O4
A13 A12 A11 A10 A9 A8 A7 A6
Input
data
control
V
CC
Row
decoder
Memory array
256
×
1024
V
SS
Column I/O
Column decoder
CS
WE
Truth Table
CS
H
L
L
WE
×
H
L
Mode
Not selected
Read
Write
V
CC
Current
I
SB
, I
SB1
I
CC
I
CC
I/O Pin
High-Z
Dout
Din
Ref. Cycle
—
Read cycle
Write cycle
Note:
×:
Don’t care.
Absolute Maximum Ratings
Parameter
Voltage on any pin relative to V
SS
Power dissipation
Operating temperature range
Storage temperature range
Storage temperature range under bias
Note:
Symbol
Vin
P
T
Topr
Tstg
Tbias
Value
–0.5
*1
to +7.0
1.0
0 to +70
–55 to +125
–10 to +85
Unit
V
W
°C
°C
°C
1. Vin min = –2.5 V for pulse widths
≤
10 ns.
3
HM6208H Series
Recommended DC Operating Conditions
(Ta = 0 to +70°C)
Parameter
Supply voltage
Symbol
V
CC
V
SS
Input high (logic 1) voltage
Input low (logic 0) voltage
Note:
V
IH
V
IL
Min
4.5
0
2.2
–0.5
*1
Typ
5.0
0
—
—
Max
5.5
0
6.0
0.8
Unit
V
V
V
V
1. V
IL
min = –2.0 V for pulse width
≤
10 ns.
DC Characteristics
(Ta = 0 to +70°C, V
CC
= 5 V
±
10%, V
SS
= 0 V)
HM6208H-25
Parameter
Input leakage current
Output leakage current
Operating power supply
current
Symbol Min
I
LI
I
LO
I
CC
—
—
—
HM6208H-35/45
Typ
*2
Max Unit Test Conditions
—
—
50
2.0
µA
V
CC
= Max
Vin = V
SS
to V
CC
CS
= V
IH
, V
IO
= V
SS
to V
CC
CS
= V
IL,
I
I/O
= 0 mA,
min cycle,
duty = 100%
CS
= V
IL,
I
I/O
= 0 mA,
t cycle = 50 ns,
duty = 100%
CS
= V
IH
, min cycle
CS
≥
V
CC
– 0.2 V,
0 V
≤
Vin < 0.2 V, or
Vin
≥
V
CC
– 0.2 V
Typ
*2
Max Min
—
—
60
2.0
—
10.0 —
120 —
10.0
µA
100 mA
I
CC1
—
40
80
—
40
80
mA
Standby power supply current I
SB
Standby power supply current I
SB1
(1)
I
SB1
*1
Output low voltage
Output high voltage
V
OL
V
OH
—
—
20
0.02
40
2.0
—
—
15
0.02
30
2.0
mA
—
—
2.4
0.006 0.1
*1
—
—
—
0.4
—
—
2.4
0.006 0.1
*1
—
—
0.4
—
V
V
I
OL
= 8 mA
I
OH
= –4.0 mA
Notes: 1. L-version
2. Typical values are at V
CC
= 5.0 V, Ta = +25°C and not guaranteed.
Capacitance
(Ta = 25°C, f = 1 MHz)
*1
Parameter
Input capacitance
Input/output capacitance
Note:
Symbol
Cin
C
I/O
Min
—
—
Max
6
11
Unit
pF
pF
Test Conditions
Vin = 0 V
V
I/O
= 0 V
1. These parameters are sampled and not 100% tested.
4
HM6208H Series
AC Characteristics
(Ta = 0 to +70°C, V
CC
= 5 V
±
10%, unless otherwise noted)
Test Conditions
•
Input pulse levels: V
SS
to 3.0 V
•
Input rise and fall time: 5 ns
•
Input and output timing reference levels: 1.5 V
•
Output load: See figure
Output Load
+5V
480
Ω
+5V
480
Ω
Dout
255
Ω
Dout
255
Ω
30 pF
*1
5 pF
*1
Output load (A)
Output load (B)
(t
HZ,
t
LZ,
t
WZ,
and t
OW
)
Note: 1. Including scope and jig
Read Cycle
HM6208H-25
Parameter
Read cycle time
Address access time
Chip select access time
Output hold from address change
Chip selection to output in low-Z
Chip deselection to output in high-Z
Chip selection to power up time
Chip deselection to power down time
Note:
Symbol Min
t
RC
t
AA
t
ACS
t
OH
t
LZ*1
t
HZ *1
t
PU
t
PD
25
—
—
5
5
0
0
—
Max
—
25
25
—
—
15
—
15
HM6208H-35
Min
35
—
—
5
5
0
0
—
Max
—
35
35
—
—
20
—
25
HM6208H-45
Min
45
—
—
5
5
0
0
—
Max
—
45
45
—
—
20
—
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
1. Transition is measured
±200
mV from steady state voltage with load (B). These parameters are
sampled and not 100% tested.
5
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