MOSEL VITELIC
1
V62C51864
8K X 8 STATIC RAM
PRELIMINARY
V62C51864 Rev. 2.1 June 1998
Features
s
High-speed: 35, 70 ns
s
Ultra low DC operating current of 5mA (max.)
s
Low Power Dissipation:
TTL Standby: 2 mA (Max.)
CMOS Standby: 15
m
A (Max.)
s
Fully static operation
s
All inputs and outputs directly compatible
s
Three state outputs
s
Ultra low data retention current (V
CC
= 2V)
s
Single 5V
10% Power Supply
s
Packages
28-pin 600 mil PDIP
28-pin 330 mil SOP (450 mil pin-to-pin)
Description
The V62C51864 is a 65,536-bit static random
access memory organized as 8,192 words by 8
bits. It is built with MOSEL VITELIC's high
performance CMOS process. Inputs and three-
state outputs are TTL compatible and allow for
direct interfacing with common system bus
structures.
Device Usage Chart
Operating
Temperature
Range
Package Outline
Access Time (ns)
Power
Temperature
Mark
P
F
35
70
L
LL
0
C to 70
C
Blank
40
C to +85
C
I
Functional Block Diagram
Row
Decoder
512 x 128
Memory Array
Input
Data
Circuit
Column I/O
Column Decoder
Control
Circuit
V
CC
GND
A
0
51864 01
A
8
I/O
0
I/O
7
CE
2
OE
WE
CE
1
A
9
A
12
2
V62C51864 Rev. 2.1 June 1998
MOSEL VITELIC
V62C51864
Pin Descriptions
A
0
A
12
Address Inputs
These 13 address inputs select one of the 8,192 x
8-bit words in the RAM.
CE
1
, CE
2
Chip Enable Inputs
CE
1
is active LOW and CE
2
is active HIGH. Both
chip enables must be active to read from or write to
the device. If either chip enable is not active, the
device is deselected and is in a standby power
mode. The I/O pins will be in the high-impedance
state when deselected.
OE
Output Enable Input
The Output Enable input is active LOW. When OE
is LOW with CE
1
LOW, CE
2
HIGH, and WE HIGH,
data of the selected memory location will be
available on the I/O pins. When OE is HIGH, the I/O
pins will be in the high impedance state.
WE
Write Enable Input
An active LOW input, WE input controls read and
write operations. When CE
1
and WE inputs are
both LOW with CE
2
HIGH, the data present on the
I/O pins will be written into the selected memory
location.
I/O
0
I/O
7
Data Input/Output Ports
These 8 bidirectional ports are used to read data
from and write data into the RAM.
V
CC
Power Supply
GND
Ground
Pin Configuration
28-Pin Plastic DIP/SOP
Top View
V
CC
A
8
A
9
A
11
A
10
OE
I/O
0
I/O
1
I/O
2
GND
A
0
A
1
A
2
A
3
A
4
A
5
I/O
7
I/O
6
I/O
5
I/O
4
51864 02
CE
2
WE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
NC
A
12
A
6
A
7
I/O
3
CE
1
MOSEL VITELIC
V62C51864
3
V62C51864 Rev. 2.1 June 1998
Part Number Information
Absolute Maximum Ratings
(1)
NOTE:
1.
Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Symbol
Parameter
Commercial
Industrial
Units
V
CC
Supply Voltage
-0.5 to +7
-0.5 to +7
V
V
N
Input Voltage
-0.5 to +7
-0.5 to +7
V
V
DQ
Input/Output Voltage Applied
V
CC
+ 0.5
V
CC
+ 0.5
V
T
BIAS
Temperature Under Bias
-10 to +125
-65 to +135
C
T
STG
Storage Temperature
-55 to +125
-65 to +150
C
SRAM
FAMILY
C = CMOS PROCESS
62 = STANDARD
51 = 5V
OPERATING
VOLTAGE
64K
ORGANIZATION
PKG
SPEED
51864 05
PWR.
62
C
8
51
64
MOSEL-VITELIC
MANUFACTURED
V
8 = 8-bit
35 ns
70 ns
TEMP.
BLANK = 0
C to 70
C
I = -40
C to +85
C
L = LOW POWER
LL = DOUBLE LOW POWER
P = 600 mil PDIP
F = 330 mil SOP (450 mil pin-to-pin)
DENSITY
Capacitance*
T
A
= 25
C, f = 1.0MHz
NOTE:
* This parameter is guaranteed and not tested.
Truth Table
NOTE:
X = Don't Care, L = LOW, H = HIGH
Symbol
Parameter Conditions
Max.
Unit
C
IN
Input Capacitance
V
IN
= 0V
6
pF
C
OUT
Output Capacitance
V
I/O
= 0V
8
pF
Mode
CE
1
CE
2
OE
WE
I/O
Operation
Standby
H
X
X
X
High Z
Standby
X
L
X
X
High Z
Output Disable
L
H
H
H
High Z
Read
L
H
L
H
D
OUT
Write
L
H
X
L
D
IN
4
V62C51864 Rev. 2.1 June 1998
MOSEL VITELIC
V62C51864
DC Electrical Characteristics
(over all temperature ranges, V
CC
= 5V
10%)
NOTES:
1.
These are absolute values with respect to device ground and all overshoots due to system or tester noise are included.
2.
V
IL
(Min.) = -3.0V for pulse width < 20ns.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Units
V
IL
Input LOW Voltage
(1,2)
-0.5
--
0.8
V
V
IH
Input HIGH Voltage
(1)
2.2
--
6
V
I
IL
Input Leakage Current
V
CC
= Max, V
IN
= 0V to V
CC
-5
--
5
m
A
I
OL
Output Leakage Current
V
CC
= Max, CE = V
IH
, V
OUT
= 0V to V
CC
-5
--
5
m
A
V
OL
Output LOW Voltage
V
CC
= Min, I
OL
= 2.1mA
--
--
0.4
V
V
OH
Output HIGH Voltage
V
CC
= Min, I
OH
= -1mA
2.4
--
--
V
Symbol
Parameter
Power Com.
(4)
Ind.
(4)
Units
I
CC
Operating Power Supply Current, CE
1
= V
IL
, CE
2
= V
IH
,
Output Open, V
CC
= Max., f = 0
READ
5
6
mA
WRITE
0
50
I
CC1
Average Operating Current, CE
1
= V
IL
, CE
2
= V
IH
, Output Open,
V
CC
= Max., f = f
MAX
(3)
60
70
mA
I
SB
TTL Standby Current
CE
1
V
IH
, CE
2
V
IL
, V
CC
= Max.
L
3
4
mA
LL
2
3
I
SB1
CMOS Standby Current, CE
1
V
CC
0.2V, CE
2
0.2V,
V
IN
V
CC
0.2V or V
IN
0.2V, V
CC
= Max.
L
60
70
m
A
LL
15
30
3.
f
MAX
= 1/t
RC
.
4.
Maximum values.
AC Test Conditions
AC Test Loads and Waveforms
Key to Switching Waveforms
Input Pulse Levels
0 to 3V
Input Rise and Fall Times
5 ns
Timing Reference Levels
1.5V
Output Load
see below
+5V
1800
990
* Includes scope and jig capacitance
I/O Pins
C
L
= 30 pF*
51864 06
WAVEFORM
INPUTS
OUTPUTS
MUST BE
STEADY
WILL BE
STEADY
MAY CHANGE
FROM H TO L
WILL BE
CHANGING
FROM H TO L
MAY CHANGE
FROM L TO H
WILL BE
CHANGING
FROM L TO H
DON'T CARE:
ANY CHANGE
PERMITTED
CHANGING:
STATE
UNKNOWN
DOES NOT
APPLY
CENTER
LINE IS HIGH
IMPEDANCE
"OFF" STATE
MOSEL VITELIC
V62C51864
5
V62C51864 Rev. 2.1 June 1998
Data Retention Characteristics
NOTES:
1.
t
RC
= Read Cycle Time
2.
T
A
= +25
C.
Low V
CC
Data Retention Waveform (1) (CE
1
Controlled)
Low V
CC
Data Retention Waveform (2) (CE
2
Controlled)
Symbol
Parameter
Power
Min.
Typ.
(2)
Max.
Units
V
DR
V
CC
for Data Retention
CE
1
V
CC
0.2V, CE
2
0.2V,
V
IN
V
CC
0.2V, or V
IN
0.2V
2.0
--
5.5
V
I
CCDR
Data Retention Current
CE
1
V
DR
0.2V, CE
2
0.2V,
V
IN
V
CC
0.2V, or V
IN
0.2V
Com'l
L
--
0.5
50
m
A
LL
--
0.5
10
Ind.
L
--
--
70
LL
--
--
20
t
CDR
Chip Deselect to Data Retention Time
0
--
--
ns
t
R
Operation Recovery Time (see Retention Waveform)
t
RC
(1)
--
--
ns
V
CC
51864 14
Data Retention Mode
CE
1
V
CC
0.2V
CE
1
2.2V
2.2V
4.5V
t
CDR
t
R
V
DR
2V
4.5V
V
CC
51864 15
Data Retention Mode
CE
2
0.2V
CE
2
2.2V
2.2V
4.5V
t
CDR
t
R
V
DR
2V
4.5V
6
V62C51864 Rev. 2.1 June 1998
MOSEL VITELIC
V62C51864
AC Electrical Characteristics
(over all temperature ranges)
Read Cycle
Write Cycle
Parameter
Name
Parameter
-35
-70
Unit
Min.
Max.
Min.
Max.
t
RC
Read Cycle Time
35
--
70
--
ns
t
AA
Address Access Time
--
35
--
70
ns
t
ACS1
Chip Enable Access Time
--
35
--
70
ns
t
ACS2
Chip Enable Access Time
--
35
--
70
ns
t
OE
Output Enable to Output Valid
--
15
--
30
ns
t
CLZ1
Chip Enable to Output in Low Z
5
--
5
--
ns
t
CLZ2
Chip Enable to Output in Low Z
5
--
5
--
ns
t
OLZ
Output Enable to Output in Low Z
5
--
5
--
ns
t
CHZ
Chip Disable to Output in High Z
0
20
0
20
ns
t
OHZ
Output Disable to Output in High Z
0
20
0
20
ns
t
OH
Output Hold from Address Change
5
--
5
--
ns
Parameter
Name
Parameter
-35
-70
Unit
Min.
Max.
Min.
Max.
t
WC
Write Cycle Time
35
--
70
--
ns
t
CW
Chip Enable to End of Write
35
--
70
--
ns
t
AS
Address Setup Time
0
--
0
--
ns
t
AW
Address Valid to End of Write
35
--
70
--
ns
t
WP
Write Pulse Width
25
--
50
--
ns
t
WR
Write Recovery Time
0
--
0
--
ns
t
WHZ
Write to Output High-Z
0
20
0
25
ns
t
DW
Data Setup to End of Write
25
--
30
--
ns
t
DH
Data Hold from End of Write
0
--
0
--
ns
t
OW
Output Active from End of Write
5
--
5
--
ns
MOSEL VITELIC
V62C51864
7
V62C51864 Rev. 2.1 June 1998
Switching Waveforms (Read Cycle)
Read Cycle 1
(1, 2)
Read Cycle 2
(1, 2, 4)
Read Cycle 3
(1, 3, 4)
NOTES:
1.
WE = V
IH
.
2.
CE
1
= V
IL
and CE
2
= V
IH
.
3.
Address valid prior to or coincident with CE
1
transition LOW and/or CE
2
transition HIGH.
4.
OE = V
IL
.
5.
Transition is measured
500mV from steady state with C
L
= 5pF. This parameter is guaranteed and not 100% tested.
ADDRESS
51864 11
OE
I/O
t
RC
t
AA
t
OE
t
OLZ
t
OH
t
OHZ
(5)
ADDRESS
I/O
51864 09
t
RC
t
AA
t
OH
t
OH
51864 10
I/O
ADDRESS
CE
1
CE
2
t
ACS1
t
ACS2
t
CLZ1
(5)
t
CLZ2
(5)
t
CHZ
(5)
8
V62C51864 Rev. 2.1 June 1998
MOSEL VITELIC
V62C51864
Switching Waveforms (Write Cycle)
Write Cycle 1 (WE Controlled)
(4)
Write Cycle 2 (CE Controlled)
(4)
NOTES:
1.
The internal write time of the memory is defined by the overlap of CE
1
and CE
2
active and WE low. Both signals must be active to
initiate and any one signal can terminate a write by going inactive. The data input setup and hold timing should be referenced to
the second transition edge of the signal that terminates the write.
2.
t
WR
is measured from the earlier of CE
1
or WE going HIGH, or CE
2
going LOW at the end of the write cycle.
3.
During this period, I/O pins are in the output state so that the input signals of opposite phase to the outputs must not be applied.
4.
OE = V
IL
or V
IH
. However it is recommended to keep OE
at V
IH
during write cycle to avoid bus contention.
5.
If CE
1
is LOW and CE
2
is HIGH during this period, I/O pins are in the output state. Then the data input signals of opposite phase
to the outputs must not be applied to them.
6. t
CW
is measured from CE
1
going LOW or CE
2
going HIGH to the end of write.
ADDRESS
OUTPUT
INPUT
CE
1
CE
2
WE
51864 12
t
WC
t
CW
(6)
t
CW
(6)
t
DW
t
DH
t
AW
t
WR
(2)
t
WHZ
t
WP
(1)
t
AS
ADDRESS
OUTPUT
High-Z
INPUT
CE
1
CE
2
WE
51864 13
t
WC
t
DW
t
DH
t
AW
t
CW
(6)
t
CW
(6)
t
WR
(2)
t
AS
(4)
(5)
MOSEL VITELIC
V62C51864
9
V62C51864 Rev. 2.1 June 1998
Package Diagrams
28-pin 600 mil Plastic DIP
28-pin 330 mil SOP
15
MAX
0.543
0.010
[13.79
0.254]
INDEX
0.062 [1.57] MAX
0.100 [2.54] TYP.
0.018
0.003
[0.457
0.076]
0.060 +0.020
0.022
0.152 +0.508
0.559
0.195 [4.95] MAX
0.118 [3.00] MIN
0.020 [0.508] MIN
1.407
+0.008
0.012
35.56
+0.203
0.305
0.600 [15.24] TYP
0.010
0.002
[0.254
0.51]
0.991
+0.508
0.559
0.039
+0.020
0.022
Units in inches [mm]
0.465
0.012
[11.81
0.305]
0.008 [0.203]
0.402
0.012
[10.21
0.203]
0.713 [18.11] TYP
0.050 [1.27] TYP
0.018
0.004
[0.457
0.102]
0.006
0.002
[0.152
0.051]
INDEX
0.339
0.008
[8.61
0.203]
"A"
0 MIN
(STAND OFF)
0.031
0.008
[0.787
0.203]
0.112 [0.285] MAX
0.024 [0.610]
0.008 [0.203] MAX
0.027 [0.686] MAX
View "A"
0.098
0.005
[2.49
0.127]
Units in inches [mm]
MOSEL VITELIC
WORLDWIDE OFFICES
V62C51864
Copyright 1998, MOSEL VITELIC Inc.
6/98
Printed in U.S.A.
MOSEL VITELIC
3910 N. First Street, San Jose, CA 95134-1501 Ph: (408) 433-6000 Fax: (408) 433-0952 Tlx: 371-9461
The information in this document is subject to change without
notice.
MOSEL VITELIC makes no commitment to update or keep cur-
rent the information contained in this document. No part of this
document may be copied or reproduced in any form or by any
means without the prior written consent of MOSEL-VITELIC.
MOSEL VITELIC subjects its products to normal quality control
sampling techniques which are intended to provide an assurance
of high quality products suitable for usual commercial applica-
tions. MOSEL VITELIC does not do testing appropriate to provide
100% product quality assurance and does not assume any liabil-
ity for consequential or incidental arising from any use of its prod-
ucts. If such products are to be used in applications in which
personal injury might occur from failure, purchaser must do its
own quality assurance testing appropriate to such applications.
U.S.A.
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SAN JOSE, CA 95134
PHONE: 408-433-6000
FAX: 408-433-0185
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