R1LP5256E Series
256Kb Advanced LPSRAM (32k word x 8bit)
R10DS0268EJ0200
Rev.2.00
2019.10.29
Description
The R1LP5256E Series is a family of low voltage 256-Kbit static RAMs organized as 32,768-word by 8-bit, fabricated
by Renesas’s high-performance 0.15um CMOS and TFT technologies. The R1LP5256E Series has realized higher
density, higher performance and low power consumption. The R1LP5256E Series is suitable for memory applications
where a simple interfacing, battery operating and battery backup are the important design objectives. It has been
packaged in 28-pin SOP and 28-pin TSOP.
Features
Single 4.5V~5.5V power supply
Small stand-by current: 0.6µA (5.0V, typical)
No clocks, No refresh
All inputs and outputs are TTL compatible.
Easy memory expansion by CS#
Common Data I/O
Three-state outputs: OR-tie Capability
OE# prevents data contention on the I/O bus
Ordering Information
Orderable part name
Access
time
Temperature
range
R1LP5256ESP-5SI#B*
R1LP5256ESP-5SI#S*
R1LP5256ESA-5SI#B*
R1LP5256ESA-5SI#S*
55 ns
Package
Shipping container
450-mil 28-pin
plastic SOP
Tube (Magazine)
8mm×13.4mm 28-pin
plastic TSOP
Tray
-40 ~ +85°C
Embossed tape
Embossed tape
Note 1. *= Revision code for Assembly site change, etc. (*= 0, 1, etc.)
R10DS0268EJ0200 Rev.2.00
2019.10.29
Page 1 of 11
R1LP5256E Series
Pin Arrangement
A14
1
28
Vcc
A12
2
27
WE#
A7
3
26
A13
A6
4
25
A8
A5
5
24
A9
A4
6
23
A11
A3
7
22
OE#
A2
8
21
A10
A1
9
20
CS#
A0
10
19
DQ7
DQ0
11
18
DQ6
DQ1
12
17
DQ5
DQ2
13
16
DQ4
GND
14
15
DQ3
28-pin SOP
OE#
22
21
A10
A11
23
20
CS#
A9
24
19
DQ7
A8
25
18
DQ6
A13
26
17
DQ5
WE#
27
16
DQ4
Vcc
28
15
DQ3
A14
1
14
GND
A12
2
13
DQ2
A7
3
12
DQ1
A6
4
11
DQ0
A5
5
10
A0
A4
6
9
A1
A3
7
8
A2
28-pin TSOP
Pin Description
Pin name
Vcc
Vss (GND)
A0 to A14
DQ0 to DQ7
CS#
WE#
OE#
Function
Power supply
Ground
Address input
Data input/output
Chip select
Write enable
Output enable
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2019.10.29
Page 2 of 11
R1LP5256E Series
Block Diagram
A0
A1
ADDRESS
ROW
MEMORY ARRAY
BUFFER
DECODER
32k-word x8-bit
A14
DQ0
DQ
DQ1
BUFFER
SENSE / WRITE AMPLIFIER
DQ7
COLUMN DECODER
CLOCK
GENERATOR
WE#
Vcc
Vss
CS#
OE#
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Page 3 of 11
R1LP5256E Series
Operation Table
CS#
WE#
OE#
DQ0~7
Operation
H
X
X
High-Z
Stand-by
L
L
X
Din
Write
L
H
L
Dout
Read
L
H
H
High-Z
Output disable
Note 1.
H: VIH L:VIL
X: VIH or VIL
Absolute Maximum
Parameter
Symbol
Power supply voltage relative to Vss
Vcc
Terminal voltage on any pin relative to Vss
VT
Power dissipation
PT
Operation temperature
Topr
Storage temperature range
Tstg
Storage temperature range under bias
Tbias
Note 1. –3.0V for pulse ≤ 30ns (full width at half maximum)
2. Maximum voltage is +7.0V.
R10DS0268EJ0200 Rev.2.00
2019.10.29
Value
-0.3 to +7.0
-0.3*1 to Vcc+0.3*2
0.7
-40 to +85
-65 to 150
-40 to +85
unit
V
V
W
°C
°C
°C
Page 4 of 11
R1LP5256E Series
DC Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Unit
Vcc
4.5
5.0
5.5
V
Supply voltage
Vss
0
0
0
V
Input high voltage
VIH
2.2
-
Vcc+0.3
V
Input low voltage
VIL
-0.3
-
0.8
V
Ambient temperature range
Ta
-40
-
+85
°C
Note
Note
1
1. –3.0V for pulse ≤ 30ns (full width at half maximum)
DC Characteristics
Parameter
Input leakage current
Output leakage current
Average operating current
Standby current
Symbol
| ILI |
Min.
-
Typ.
-
Max.
1
Unit
A
| ILO |
-
-
1
A
ICC1
-
25
35
mA
ICC2
-
2
4
mA
ISB
-
-
3
mA
-
0.6*1
2
A
-
-
3
A
~+40°C
-
-
8
A
~+70°C
-
-
10
A
~+85°C
VOH
2.4
-
-
V
IOH = -1mA
VOH2
Vcc
- 0.5
-
-
V
IOH = -0.1mA
VOL
-
-
0.4
V
IOL = 2mA
Standby current
Test conditions
Vin = Vss to Vcc
CS# =VIH or OE# =VIH,
VI/O =Vss to Vcc
Min. cycle, duty =100%, II/O = 0mA,
CS# =VIL, Others = VIH/VIL
Cycle =1s, duty =100%, II/O = 0mA,
CS# ≤ 0.2V,
VIH ≥ Vcc-0.2V, VIL ≤ 0.2V
CS# =VIH,
Others = Vss to Vcc
Vin = Vss to Vcc,
~+25°C
CS# ≥ Vcc-0.2V
ISB1
Output high voltage
Output low voltage
Note
1. Typical parameter indicates the value for the center of distribution at 5.0V (Ta= 25ºC), and not 100% tested.
Capacitance
(Vcc = 4.5V ~ 5.5V, f = 1MHz, Ta = -40 ~ +85°C)
Parameter
Symbol
Min.
Input capacitance
C in
Input / output capacitance
C I/O
Note 1. This parameter is sampled and not 100% tested.
R10DS0268EJ0200 Rev.2.00
2019.10.29
Typ.
-
Max.
6
8
Unit
pF
pF
Test conditions
Vin =0V
VI/O =0V
Note
1
1
Page 5 of 11
R1LP5256E Series
AC Characteristics
Test Conditions (Vcc = 4.5V ~ 5.5V, Ta = -40 ~ +85°C)
Input pulse levels: VIL = 0.6V, VIH = 2.4V
Input rise and fall time: 5ns
Input and output timing reference level: 1.5V
Output load: See figures (Including scope and jig)
1.5V
RL = 500 ohm
DQ
CL = 30 pF
R10DS0268EJ0200 Rev.2.00
2019.10.29
Page 6 of 11
R1LP5256E Series
Read Cycle
Parameter
Read cycle time
Address access time
Chip select access time
Output enable to output valid
Output hold from address change
Chip select to output in low-Z
Output enable to output in low-Z
Chip deselect to output in high-Z
Output disable to output in high-Z
Symbol
Min.
Max.
Unit
Note
tRC
tAA
tACS
tOE
tOH
tCLZ
tOLZ
tCHZ
tOHZ
55
10
5
5
0
0
55
55
30
20
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
2,3
2,3
1,2,3
1,2,3
Symbol
Min.
Max.
Unit
Note
tWC
tAW
tCW
tWP
tAS
tWR
tDW
tDH
tOW
tOHZ
tWHZ
55
50
50
40
0
0
25
0
5
0
0
20
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Write Cycle
Parameter
Write cycle time
Address valid to end of write
Chip select to end of write
Write pulse width
Address setup time
Write recovery time
Data to write time overlap
Data hold from write time
Output enable from end of write
Output disable to output in high-Z
Write to output in high-Z
Note
5
4
6
7
2
1,2
1,2
1. tCHZ, tOHZ and tWHZ are defined as the time at which the outputs achieve the open circuit conditions and are not
referred to output voltage levels.
2. This parameter is sampled and not 100% tested.
3. At any given temperature and voltage condition, tHZ max is less than tLZ min both for a given device and from
device to device.
4. A write occurs during the overlap of a low CS#, a low WE#.
A write begins at the latest transition among CS# going low and WE# going low.
A write ends at the earliest transition among CS# going high and WE# going high.
tWP is measured from the beginning of write to the end of write.
5. tCW is measured from the later of CS# going low to end of write.
6. tAS is measured the address valid to the beginning of write.
7. tWR is measured from the earliest of CS# or WE# going high to the end of write cycle.
8. Don’t apply inverted phase signal externally when DQ pin is output mode.
R10DS0268EJ0200 Rev.2.00
2019.10.29
Page 7 of 11
R1LP5256E Series
Timing Waveforms
Read Cycle
tRC
A0~14
tOH
tAA
tACS
CS#
tCLZ
WE#
tCHZ
VIH
WE# = “H” level
tOE
OE#
tOLZ
tOHZ
High impedance
DQ0~7
R10DS0268EJ0200 Rev.2.00
2019.10.29
Valid Data
Page 8 of 11
R1LP5256E Series
Write Cycle (1) (WE# CLOCK)
tWC
A0~14
tCW
CS#
tAW
tAS
tWP
tWR
WE#
OE#
tWHZ
tOLZ
tOHZ
DQ0~7
tOW
Valid Data
tDW
R10DS0268EJ0200 Rev.2.00
2019.10.29
tDH
Page 9 of 11
R1LP5256E Series
Write Cycle (2) (CS# CLOCK)
tWC
A0~14
tAW
tAS
tCW
tWR
CS#
tWP
WE#
OE#
VIH
OE# = “H” level
tDW
DQ0~7
R10DS0268EJ0200 Rev.2.00
2019.10.29
tDH
Valid Data
Page 10 of 11
R1LP5256E Series
Low Vcc Data Retention Characteristics
Test conditions*2
Parameter
Symbol
Min.
Typ.
Max.
Unit
VCC for data retention
VDR
2.0
-
5.5
V
Vin ≥ 0V,
CS# ≥ Vcc-0.2V
-
0.6*1
2
A
~+25°C
-
-
3
A
~+40°C
-
-
8
A
~+70°C
-
-
10
A
~+85°C
Data retention current
ICCDR
Vcc=3.0V, Vin ≥ 0V,
CS# ≥ Vcc-0.2V
Chip deselect time to data retention
tCDR
0
ns
See retention waveform.
Operation recovery time
tR
5
ms
Note 1. Typical parameter indicates the value for the center of distribution at 3.0V (Ta= 25ºC), and not 100% tested.
2. CS# controls address buffer, WE# buffer, OE# buffer and Din buffer. If CS# controls data retention mode, Vin
levels (address, WE#, OE#, DQ) can be in the high impedance state.
Low Vcc Data Retention Timing Waveforms
CS# Controlled
Vcc
tCDR
2.2V
4.5V
4.5V
VDR
tR
2.2V
CS# ≥ Vcc - 0.2V
CS#
R10DS0268EJ0200 Rev.2.00
2019.10.29
Page 11 of 11
Revision History
Rev.
1.00
2.00
Date
2017.1.27
2019.10.29
R1LP5256E Series Data Sheet
Page
p.1
Description
Summary
First Edition issued
Revised orderable part name information.
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