Sony CXK5V8257BYM 32768-word x 8-bit high speed cmos static ram Datasheet

CXK5V8257BTM/BYM/BM -70LL/10LL
32768-word × 8-bit High Speed CMOS Static RAM
For the availability of this product, please contact the sales office.
Description
The CXK5V8257BTM/BYM/BM is 262,144 bits
high speed CMOS static RAM organized as 32768words by 8 bits.
A polysilicon TFT cell technology realized extermely
low stand-by current and higher data retention stability.
Operating on a single 3.3V supply, directly LVTTL
compatible (All inputs and outputs).
And special feature are, low power consumption,
high speed and broad package line-up.
The CXK5V8257BTM/BYM/BM is a suitable RAM
for portable equipment with battery back up.
Features
• Single +3.3V supply: 3.3V ±0.3V
• Directly LVTTL compatible: All inputs and outputs
• Fast access time:
(Access time)
CXK5V8257BTM/BYM/BM
-70LL
70ns (Max.)
-10LL
100ns (Max.)
• Low standby current:
CXK5V8257BTM/BYM/BM
-70LL/10LL
3.5µA (Max.)
• Low power data retention: 2.0V (Min.)
• Available in many packages
CXK5V8257BTM/BYM 8mm × 13.4mm 28 pin
TSOP Package
CXK5V8257BM
450mil 28 pin
SOP Package
CXK5V8257BTM
28 pin TSOP (Plastic)
CXK5V8257BYM
28 pin TSOP (Plastic)
CXK5V8257BM
28 pin SOP (Plastic)
Block Diagram
A14
A13
A12
A11
A9
A8
A7
A6
A5
Buffer
A10
A4
A3
A2
A1
A0
Buffer
OE
Function
32768-word × 8 bit static RAM
WE
Row
Decoder
Memory
Matrix
VCC
512 × 512
GND
I /O Gate
Column
Decoder
Buffer
I /O Buffer
CE
I /O1 I /O8
Structure
Silicon gate CMOS IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E93836A5Z-ST
CXK5V8257BTM/BYM/BM
AA
Pin Configuration (Top View)
OE
A11
A9
A8
A13
WE
Vcc
A14
A12
A7
A6
A5
A4
A3
22
21
23
20
24
19
25
18
26
27
17
A3
A4
A5
A6
A7
A12
A14
Vcc
WE
A13
A8
A9
A11
OE
16
15
CXK5V8257BTM
(Standard Pinout)
28
1
2
14
13
3
12
4
11
5
10
6
9
7
8
7
8
6
9
5
4
10
3
12
2
13
11
CXK5V8257BYM
(Mirror Image Pinout)
1
28
14
15
27
26
16
25
18
24
19
23
20
22
21
17
Absolute Maximum Ratings
Item
A10
CE
I/O8
I/O7
I/O6
I/O5
I/O4
GND
I/O3
I/O2
I/O1
A0
A1
A2
Symbol
28
Vcc
27
WE
26
A13
25
A8
A5 5
24
A9
A4 6
23
A11
A3 7
22
OE
A2 8
21
A10
A1 9
20
CE
A14 1
A12 2
A7 3
A6 4
A2
A1
A0
I/O1
I/O2
I/O3
GND
I/O4
I/O5
I/O6
I/O7
I/O8
CE
A10
Pin Description
A0 10
19
I/O8
I/O1 11
18
I/O7
I/O2 12
17
I/O6
I/O3 13
16
I/O5
GND 14
15
I/O4
A0 to A14
Address input
I/O1 to I/O8
data input/output
CE
Chip enable input
WE
Write enable input
OE
Output enable input
VCC
+3.3V power supply
GND
Ground
CXK5V8257BM
(Ta = 25°C, GND = 0V)
Symbol
Rating
Unit
V
Supply voltage
VCC
Input voltage
VIN
–0.5 to +4.6
–0.5∗1 to VCC + 0.5
Input and output voltage
VI/O
–0.5∗1 to VCC + 0.5
V
Allowable power dissipation
PD
0.7
W
Operating temperature
Topr
0 to +70
°C
Storage temperature
Tstg
–55 to +150
°C
Soldering temperature · time
Tsolder
235 · 10
°C · s
V
∗1 VIN, VI/O = –3.0V Min. for pulse width less than 50ns.
Truth Table
CE
OE
WE
Mode
I/O1 to I/O8
H
×
×
Not selected
High Z
ISB1, ISB2
L
H
H
Output disable
High Z
ICC1, ICC2
L
L
H
Read
Data out
ICC1, ICC2
L
×
L
Write
Data in
ICC1, ICC2
VCC Current
× : “H” or “L”
DC Recommended Operating Conditions
Item
(Ta = 0 to +70°C, GND = 0V)
Symbol
Min.
Typ.
Max.
Supply voltage
VCC
3.0
3.3
3.6
Input high voltage
VIH
—
VCC + 0.3
Input low voltage
VIL
2.0
–0.3∗2
—
0.8
∗2 VIL = –3.0V Min. for pulse width less than 50ns.
–2–
Description
Unit
V
CXK5V8257BTM/BYM/BM
Electrical Characteristics
• DC characteristics
Item
(VCC = 3.3V ± 0.3V, GND = 0V, Ta = 0 to +70°C)
Symbol
Test Conditions
Min.
Typ.∗1
Max.
Unit
Input leakage current ILI
VIN = GND to VCC
–0.5
—
0.5
µA
Output leakage
current
ILO
CE = VIH,
OE = VIH or WE = VIL,
VI/O = GND to VCC
–0.5
—
0.5
µA
Operating power
supply current
ICC1
CE = VIL,
VIN = VIH or VIL,
IOUT = 0mA
—
0.9
2
mA
70LL
—
21
40
10LL
—
18
35
0 to +70°C
—
—
3.5
0 to +40°C
—
—
0.7
+25°C
—
0.12
0.35
Average operating
ICC2
current
Standby current
ISB1
Min. cycle,
Duty = 100%, IOUT = 0mA
CE ≥ VCC – 0.2V
mA
µA
ISB2
CE = VIH
—
0.06
0.7
mA
Output high
voltage
VOH
IOH = –2mA
2.4
—
—
V
Output low
voltage
VOL
IOL = 2.0mA
—
—
0.4
V
∗1 VCC = 3.3V, Ta = 25°C
I/O capacitance
Item
(Ta = 25°C, f = 1MHz)
Symbol Test condition
Min.
Typ.
Max.
Unit
Input capacitance
CIN
VIN = 0V
—
—
8
pF
I/O capacitance
CI/O
VI/O = 0V
—
—
10
pF
Note) This parameter is sampled and is not 100% tested.
AC Characteristics
• AC test conditions (VCC = 3.3V ± 0.3V, Ta = 0 to +70°C)
Item
Conditions
Input pulse high level
VIH = 2.0V
Input pulse low level
VIL = 0.8V
Input rise time
tr = 5ns
tf = 5ns
Input fall time
Input and output reference level
Output load
conditions
TTL
-70LL
1.4V
CL∗2 = 30pF, 1TTL
-10LL
CL∗2 = 100pF, 1TTL
∗2 CL includes scope and jig capacitances.
–3–
CL
CXK5V8257BTM/BYM/BM
• Read cycle (WE = “H”)
-70LL
Item
Read cycle time
Address access time
Chip enable access time (CE)
Output enable to output valid
Output hold from address change
Chip enable to output in low Z (CE)
Output enable to output in low Z (OE)
Chip disable to output in high Z (CE)
Output disable to output in high Z (OE)
∗1
Symbol
tRC
tAA
tCO
tOE
tOH
tLZ
tOLZ
tHZ∗1
tOHZ∗1
-10LL
Unit
Min.
Max.
Min.
Max.
70
—
100
—
ns
—
70
—
100
ns
—
70
—
100
ns
—
35
—
50
ns
20
—
20
—
ns
10
—
10
—
ns
5
—
10
—
ns
—
30
—
35
ns
—
30
—
35
ns
tHZ and tOHZ are defined as the time required for outputs to turn to high impedance state and are not
referred to as output voltage levels.
• Write cycle
-70LL
Item
Write cycle time
Address valid to end of write
Chip enable to end of write
Data to write time overlap
Data hold from write time
Write pulse width
Address setup time
Write recovery time (WE)
Write recovery time (CE)
Output active from end of write
Write to output in high Z
∗2
Symbol
tWC
tAW
tCW
tDW
tDH
tWP
tAS
tWR
tWR1
tOW
tWHZ∗2
-10LL
Unit
Min.
Max.
Min.
Max.
70
—
100
—
ns
60
—
80
—
ns
60
—
80
—
ns
30
—
35
—
ns
0
—
0
—
ns
55
—
60
—
ns
0
—
0
—
ns
0
—
0
—
ns
0
—
0
—
ns
10
—
10
—
ns
—
30
—
35
ns
tWHZ is defined as the time required for outputs to turn to high impedance state and is not referred to as
output voltage level.
–4–
CXK5V8257BTM/BYM/BM
Timing Waveform
• Read cycle (1): CE = OE = VIL, WE = VIH
tRC
Address
tAA
tOH
Data out
Previous data valid
Data valid
• Read cycle (2): WE = VIH
tRC
Address
tAA
CE
tCO
tHZ
tLZ
OE
tOE
tOHZ
tOLZ
Data valid
Data out
High impedance
• Write cycle (1): WE control
tWC
Address
tWR
tAW
OE
tCW
CE
tAS
tWP
(∗1)
WE
tDW
tDH
Data valid
Data in
tWHZ
tOW
Data out
High impedance
(∗2)
–5–
(∗2)
CXK5V8257BTM/BYM/BM
• Write cycle (2): CE control
tWC
Address
tAW
OE
tAS
tWR1 (∗3)
tCW
CE
tWP
WE
tDW
Data in
tDH
Data valid
Data out
High impedance
∗1 Write is executed when both CE and WE are at low simultaneously.
∗2 Do not apply the data input voltage of the opposite phase to the output while I/O pin is in output condition.
∗3 tWR1 is measured at the period from the rising edge of CE to the end of write cycle.
–6–
CXK5V8257BTM/BYM/BM
Data retention waveform
• Low supply voltage data retention waveform
tCDRS
tR
Data retention mode
VCC
3.0V
2.0V
VDR
CE
CE ≥ VCC – 0.2V
GND
Data Retention Characteristics
Item
Symbol
Data retention voltage VDR
Data retention
current
ICCDR1
(Ta = 0 to +70°C)
Test condiitions
Min.
Typ.
Max.
Unit
2.0
—
3.6
V
0 to +70°C
—
—
3
0 to +40°C
—
—
0.6
+25°C
—
0.1
0.3
CE ≥ VCC – 0.2V
VCC = 3.0V,
CE ≥ 2.8V
µA
ICCDR2
VCC = 2.0 to 3.6V,
CE ≥ VCC – 0.2V
—
0.12∗1
3.5
µA
Data retention setup
time
tCDRS
Chip disable to data retention mode
0
—
—
ns
Recovery time
tR
5
—
—
ms
∗1 VCC = 3.3V, Ta = 25°C
–7–
CXK5V8257BTM/BYM/BM
Package Outline
Unit: mm
CXK5V8257BTM
28PIN TSOP (Plastic)
∗8.0 ± 0.1
0.1
13.4 ± 0.3
8
∗11.8 ± 0.1
21
1.2 MAX
A
22
+ 0.1
0.2 – 0.05
28 1
+ 0.07
0.127 – 0.02
7
0.55 ± 0.1
0.5 ± 0.1
+ 0.1
0.05 – 0.05
0° to 10°
DETAIL A
NOTE: Dimension “∗” does not include mold protrusion.
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
TSOP-28P-L01
LEAD TREATMENT
SOLDER PLATING
EIAJ CODE
TSOP028-P-0000-A
LEAD MATERIAL
COPPER / 42 ALLOY
PACKAGE WEIGHT
0.2g
JEDEC CODE
CXK5V8257BYM
28PIN TSOP (Plastic)
∗8.0 ± 0.1
1.2 MAX
0.1
13.4 ± 0.3
21
∗11.8 ± 0.1
8
A
7
+ 0.1
0.2 – 0.05
1 28
+ 0.07
0.127 – 0.02
22
0.55 ± 0.1
0.5 ± 0.1
+ 0.1
0.05 – 0.05
0° to 10°
DETAIL A
NOTE: Dimension “∗” does not include mold protrusion.
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
TSOP-28P-L01R
LEAD TREATMENT
SOLDER PLATING
EIAJ CODE
TSOP028-P-0000-B
LEAD MATERIAL
COPPER / 42 ALLOY
PACKAGE WEIGHT
0.2g
JEDEC CODE
–8–
CXK5V8257BTM/BYM/BM
CXK5V8257BM
28PIN SOP (PLASTIC)
+ 0.4
2.3 – 0.15
+ 0.4
18.0 – 0.1
28
15
0.15
14
1
0.4 ± 0.1
1.27
0.24
1.0 ± 0.2
11.8 ± 0.4
+ 0.3
8.4 – 0.1
+ 0.2
0.1 – 0.05
0° to 10°
+ 0.1
0.05
0.15 –
M
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
SOP-28P-L05
LEAD TREATMENT
SOLDER PLATING
EIAJ CODE
∗SOP028-P-0450
LEAD MATERIAL
42 ALLOY
PACKAGE WEIGHT
0.7g
JEDEC CODE
–9–
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