• Very low power consumption :
Vcc = 5.0V C-grade : 35mA (Max.) operating current
I- grade : 40mA (Max.) operating current
0.4uA (Typ.) CMOS standby current
• High speed access time :
-55 55ns (Max.) = 5.0V
-70 70ns (Max.) = 5.0V
• Automatic power down when chip is deselected
• Three state outputs and TTL compatible
• Fully static operation
• Data retention supply voltage as low as 1.5V
• Easy expansion with CE and OE options
DESCRIPTION
The BS62LV2565 is a high performance, very low power CMOS
Static Random Access Memory organized as 32,768 words by 8 bits
and operates from a wide range of 4.5V to 5.5V supply voltage.
Advanced CMOS technology and circuit techniques provide both high
speed and low power features with a typical CMOS standby current of
0.4uA and maximum access time of 55ns in 5V operation.
Easy memory expansion is provided by an active LOW chip
enable (CE), and active LOW output enable (OE) and three-state
output drivers.
The BS62LV2565 has an automatic power down feature, reducing the
power consumption significantly when chip is deselected.
The BS62LV2565 is available in the JEDEC standard 28 pin
330mil Plastic SOP, 300mil Plastic SOJ, 600mil Plastic DIP and
C to +70OC4.5V ~ 5.5V55 / 701.0uA35mA
BS62LV2565JCSOJ-28
BS62LV2565DC
BS62LV2565SISOP-28
BS62LV2565TITSOP-28
BS62LV2565PIPDIP-28
O
-40
C to +85OC4.5V ~ 5.5V55 / 702.0uA40mA
BS62LV2565JISOJ-28
BS62LV2565DI
PIN CONFIGURATIONS
•
1
A14
2
A12
3
A7
4
A6
5
A5
BS62LV2565SC
6
A4
BS62LV2565SI
BS62LV2565PC
7
A3
BS62LV2565PI
8
A2
BS62LV2565JC
BS62LV2565JI
9
A1
10
A0
11
DQ0
12
DQ1
13
DQ2
14
GND
•
1
OE
2
A11
3
A9
4
A8
5
A13
6
WE
VCC
A14
A12
7
8
9
10
A7
11
A6
12
A5
13
A4
14
A3
BS62LV2565TC
BS62LV2565TI
28
VC
C
27
WE
26
A13
25
A8
24
A9
23
A11
22
OE
21
A10
20
CE
19
DQ7
18
DQ6
17
DQ5
16
DQ4
15
DQ3
A10
28
CE
27
DQ7
26
DQ6
25
DQ5
24
DQ4
23
DQ3
22
GND
21
DQ2
20
DQ1
19
DQ0
18
A0
17
A1
16
A2
15
BLOCK DIAGRAM
A5
A6
A7
A12
A14
A13
A8
A9
A11
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CE
WE
OE
Vdd
Gnd
POWER DISSIPATION
STANDBY
CCSB1
(I
, Max)
Address
Input
Buffer
8
8
Control
18
Row
Decoder
Data
Input
Buffer
Data
Output
Buffer
Operating
(ICC, Max)
512
8
8
Address Input Buffer
A4
DICE
DICE
Memory Array
512 x 512
512
Column I/O
Write Driver
Sense Amp
64
Column Decoder
12
A3 A2 A1 A0 A10
PKG
TYPE
Brilliance Semiconductor Inc. reserves the right to modify document contents without notice.
R0201-BS62LV2565
1
Revision 2.2
April 2001
Page 2
BSI
PIN DESCRIPTIONS
NameFunction
BS62LV2565
A0-A14 Address Input
CE Chip Enable Input
WE Write Enable Input
OE Output Enable Input
DQ0-DQ7 Data Input/Output
These 15 address input select one of the 32768 x 8-bit wordsin the RAM
CE is active LOW. Chip enables must be active to read from or write to the device. If
chip enable is not active, the device is deselected and is in a standby power mode.
The DQ pins will be in the high impedance state when the device is deselected.
The write enable input is active LOW and controls read and write operations. With the
chip selected, when WE is HIGH and OE is LOW, output data will be present on the
DQ pins; when WE is LOW, the data present on the DQ pins will be written into the
selected memory location.
The output enable input is active LOW. If the output enable is active while the chip is
selected and the write enable is inactive, data will be present on the DQ pins and they
will be enabled. The DQ pins will be in the high impedance state when OE is inactive.
These 8 bi-directional ports are used to read data from or write data into the RAM.
Ports
Vcc
Gnd
Power Supply
Ground
TRUTH TABLE
MODEWECEOEI/O OPERATIONVcc CURRENT
Not selectedXHXHigh ZI
Output DisabledHLHHigh ZI
ReadHLLD
WriteLLXD
OUT
IN
CCSB
I
I
, I
CCSB1
CC
CC
CC
ABSOLUTE MAXIMUM RATINGS
(1)
SYMBOLPARAMETERRATINGUNITS
TERM
V
BIAS
T
STG
T
T
P
OUT
I
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.
R0201-BS62LV2565
Terminal Voltage with
Respect to GND
Temperature Under Bias-40 to +125
Storage Temperature-60 to +150
Power Dissipation1.0W
DC Output CurrentmA20
-0.5 to +6.0V
OPERATING RANGE
RANGE
O
C
O
C
Commercial0
Industrial-40
CAPACITANCE
SYMBOLPARAMETERCONDITIONSMAX.UNIT
Input
IN
C
C
1. This parameter is guaranteed and not tested.
DQ
Capacitance
Input/Output
Capacitance
2
AMBIENT
TEMPERATURE
O
C to +70
O
(1)
O
C4.5V ~ 5.5V
C to +85
O
C4.5V ~ 5.5V
(TA = 25oC, f = 1.0 MHz)
VIN=0V6pF
I/O
V
=0V8pF
Vcc
Revision 2.2
April 2001
Page 3
BSI
BS62LV2565
DC ELECTRICAL CHARACTERISTICS ( TA = 0
PARAMETER
NAME
IL
V
IH
V
IL
I
IOL Output Leakage Current
VOL Output Low Voltage Vcc = Max, IOL = 2mA
VOH Output High Voltage Vcc = Min, IOH = -1mA
CC
I
CCSB
I
Standby Current-TTL CE = VIH, IDQ = 0mA
CCSB1
I
Standby Current-CMOS
PARAMETER TEST CONDITIONS MIN. TYP.
Guaranteed Input Low
(2)
Voltage
Guaranteed Input High
(2)
Voltage
Input Leakage CurrentVcc = Max, V
Vcc = Max, CE = V
I/O
V
= 0V to Vcc
Operating Power
Supply Current
CE = V
CE Њ Vcc-0.2V,
IN
Њ
V
o
C to + 70oC )
IN
= 0V to Vcc-- -- 1 uA
IH
, or OE = VIH,
IL
, IDQ = 0mA, F = Fmax
Vcc - 0.2V or V
IN
Љ
0.2V
(1)
MAX.
Vcc=5.0V
Vcc=5.0V
-0.5 -- 0.8 V
2.2 -- Vcc+0.2V
-- -- 1 uA
Vcc=5.0V
Vcc=5.0V
(3)
Vcc=5.0V
Vcc=5.0V
Vcc=5.0V
-- -- 0.4 V
2.4 -- -- V
----35
----2
--0.4 1.0
1. Typical characteristics are at TA = 25oC.
2. These are absolute values with respect to device ground and all overshoots due to system or tester notice are included.
3. Fmax = 1/t
DATA RETENTION CHARACTERISTICS ( TA = 0
SYMBOLPAR AMETE RTEST CONDITIONSMIN. TYP.
V
.
RC
o
C to + 70oC )
(1)
MAX.UNITS
DR
Vcc for Data Retention
CE Њ Vcc - 0.2V
V
IN Њ Vcc - 0.2V or VIN Љ 0.2V
1.5----V
UNITS
mA
mA
uA
I
CCDR
t
CDR
t
R
1. Vcc = 1.5V, TA= + 25OC
= Read Cycle Time
2. t
RC
LOW V
DATA RETENTION WAVEFORM (1) ( CE Controlled )
CC
Vcc
CE
R0201-BS62LV2565
Data Retention Current
Chip Deselect to Data
Retention Time
Operation Recovery Time
CE Њ Vcc -0.2V
V
INЊ Vcc - 0.2V or VIN Љ 0.2V
See Retention Waveform
Data Retention Mode
Vcc
VDR 1.5V
t CDR
≥
CE Vcc - 0.2V
3
--0.010.40uA
0----ns
(2)
T
RC
≥
Vcc
----ns
t R
VIHVIH
Revision 2.2
April 2001
Page 4
BSI
BS62LV2565
AC TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output
Timing Reference Level
Vcc/0V
5ns
0.5Vcc
AC TEST LOADS AND WAVEFORMS
5.0V
OUTPUT
INCLUDING
JIG AND
SCOPE
OUTPUT
Vcc
GND
Ω
1928
100PF
Ω
1020
FIGURE 1A
THEVENIN EQUIVALENT
ALL INPUT PULSES
10%
→
90%
←
FIGURE 2
5.0V
OUTPUT
INCLUDING
JIG AND
SCOPE
Ω667
90%
→
10%
←
1928
5PF
FIGURE 1B
1.73V
5ns
AC ELECTRICAL CHARACTERISTICS ( TA = 0
KEY TO SWITCHING WAVEFORMS
Ω
Ω
1020
o
C to + 70oC, Vcc=5V )
WAVEFORMINPUTSOUTPUTS
MUST BE
STEADY
MAY CHANGE
FROM H TO L
MAY CHANGE
FROM L TO H
,
DON T CAR
ANY CHANG
PERMITTED
DOES NOT
APPLY
E:CHANGE :
ESTATE
MUST BE
STEADY
WILL BE
CHANGE
FROM H TO L
WILL BE
CHANGE
FROM L TO H
UNKNOWN
CENTER
LINE IS HIGH
IMPEDANCE
”OFF ”STATE
READ CYCLE
JEDEC
PARAMETER
NAME
t
AVAX
t
AVQV
t
ELQV
t
GLQV
t
ELQX
t
GLQX
t
EHQZ
t
GHQZ
t
AXOX
PARAMETER
NAME
t
RC
t
AA
t
ACS
t
OE
t
CLZ
t
OLZ
t
CHZ
t
OHZ
t
OH
DESCRIPTION
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Enable to Output Valid
Chip Select to Output Low Z
Output Enable to Output in Low Z
Chip Deselect to Output in High Z
Output Disable to Output in High Z
Output Disable to Output Address Change
BS62LV2565-55
MIN. TYP. MAX.
BS62LV2565-70
MIN. TYP. MAX.
UNIT
55----70----ns
----55----70ns
----55----70ns
----25----35ns
10----10----ns
10----10----ns
0--300--35 ns
0--250--30 ns
10----10----ns
R0201-BS62LV2565
4
Revision 2.2
April 2001
Page 5
BSI
SWITCHING WAVEFORMS (READ CYCLE)
READ CYCLE1
ADDRESS
D
(1,2,4)
t AA
t OH
OUT
BS62LV2565
t RC
t OH
READ CYCLE2
CE
D
OUT
READ CYCLE3
ADDRESS
OE
CE
(1,3,4)
(1,4)
t CLZ
t ACS
(5)
t CHZ
(5)
t RC
t AA
t OE
t OH
t OLZ
t OHZ
t CHZ
(5)
(1,5)
t CLZ
t ACS
(5)
D
OUT
NOTES:
1. WE is high in read Cycle.
2. Device is continuously selected when CE = V
3. Address valid prior to or coincident with CE transition low.
4. OE = V
5. Transition is measured 500mV from steady state with CL = 5pF as shown in Figure 1B.
R0201-BS62LV2565
IL .
The parameter is guaranteed but not 100% tested.
IL.
±
5
Revision 2.2
April 2001
Page 6
BSI
BS62LV2565
AC ELECTRICAL CHARACTERISTICS ( TA = 0
WRITE CYCLE
JEDEC
PARAMET ER
NAME
t
AVAX
t
E1LWH
t
AVW L
t
AVW H
t
WLWH
t
WHAX
t
WLOZ
t
DVWH
t
WHDX
t
GHOZ
t
WHQX
PARAM ETER
NAME
t
WC
t
CW
t
AS
t
AW
t
WP
t
WR
t
WHZ
t
DW
t
DH
t
OHZ
t
OW
DESCRIPTION
Write Cycle Time
Chip Select to End of Write
Address Set up Time
Address Valid to End of Write
Write Pulse W idth
Write Recover y Time(CE , WE)
Write to Out put in Hi gh Z
Data to Write Time Overlap
Data Hold from Write Time
Output Disable to Output in High Z
End ot Write to Output Active
o
C to + 70oC, Vcc=5V )
BS62LV2565-55
MIN. TYP. MAX.
55----70----ns
55----70----ns
0----0----ns
55----70----ns
35----45----ns
0----0----ns
----25----30ns
35----40----ns
0----0----ns
0 --25ns--30 ns
5----5----ns
BS62LV2565-70
MIN. TYP. MAX.
UNIT
SWITCHING WAVEFORMS (WRITE CYCLE)
WRITE CYCLE1
ADDRESS
OE
CE
WE
(1)
(5)
t AS
(4,10)
t OHZ
D
OUT
D
IN
t AW
t WC
t CW
t WP
(11)
(3)
t WR
(2)
t DH
t DW
R0201-BS62LV2565
6
Revision 2.2
April 2001
Page 7
BSI
BS62LV2565
WRITE CYCLE2
ADDRESS
CE
WE
D
OUT
D
IN
(1,6)
t AS
(5)
t AW
(4,10)
t WHZ
t WC
t CW
t WP
(11)
(2)
t DH
(7)(8)
t DW
t DH
(8,9)
NOTES:
1. WE must be high during address transitions.
2. The internal write time of the memory is defined by the overlap of CE and WE low. All signals
must be active to initiate a write 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.
3. T
WR is measured from the earlier of CE or WE going high at the end of write cycle.
4. During this period, DQ pins are in the output state so that the input signals of opposite phase
to the outputs must not be applied.
5. If the CE low transition occurs simultaneously with the WE low transitions or after the WE
transition, output remain in a high impedance state.
6. OE is continuously low (OE = V
7.
DOUT is the same phase of write data of this write cycle.
OUT is the read data of next address.
8. D
9. If CE is low during this period, DQ pins are in the output state. Then the data input signals of
opposite phase to the outputs must not be applied to them.
10. Transition is measured 500mV from steady state with C
The parameter is guaranteed but not 100% tested.
CW is measured from the later of CE going low to the end of write.