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Número de pieza | R1EX24002ASAS0I | |
Descripción | Two-wire serial interface 2k EEPROM | |
Fabricantes | Renesas Technology | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de R1EX24002ASAS0I (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
No Preview Available ! R1EX24002ASAS0I
R1EX24002ATAS0I
Two-wire serial interface
2k EEPROM (256-word × 8-bit)
www.DataSheet4U.com
REJ03C0355-0001
Preliminary
Rev.0.01
Jan. 10, 2008
Description
R1EX24xxx series are two-wire serial interface EEPROM (Electrically Erasable and Programmable
ROM). They realize high speed, low power consumption and a high level of reliability by employing
advanced MNOS memory technology and CMOS process and low voltage circuitry technology. They also
have a 16-byte page programming function to make their write operation faster.
Features
• Single supply: 1.8 V to 5.5 V
• Two-wire serial interface (I2C serial bus)
• Clock frequency: 400 kHz
• Power dissipation:
Standby: 2 µA (max)
Active (Read): 1 mA (max)
Active (Write): 2.5 mA (max)
• Automatic page write: 16-byte/page
• Write cycle time: 5 ms
• Endurance: 106 Cycles
• Data retention: 10 Years
Preliminary: The specifications of this device are subject to change without notice. Please contact your
nearest Renesas Technology’s Sales Dept. regarding specifications.
REJ03C0355-0001 Rev.0.01 Jan. 10, 2008
Page 1 of 22
1 page R1EX24002AxxS0I
AC Characteristics (Ta = −40 to +85°C, VCC = 1.8 to 5.5 V)
Test Conditions
• Input pules levels:
VIL = 0.2 × VCC
VIH = 0.8 × VCC
• Input rise and fall time: ≤ 20 ns
• Input and output timing reference levels: 0.5 × VCC
• Output load: TTL Gate + 100 pF
Parameter
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Clock frequency
Clock pulse width low
Clock pulse width high
Noise suppression time
Access time
Bus free time for next mode
Start hold time
Start setup time
Data in hold time
Data in setup time
Input rise time
Input fall time
Stop setup time
Data out hold time
Write protect hold time
Write protect setup time
Write cycle time
Erase/Write Endurance
Symbol Min
f
SCL
tLOW
tHIGH
t
I
t
AA
tBUF
tHD.STA
t
SU.STA
t
HD.DAT
tSU.DAT
tR
t
F
t
SU.STO
tDH
tHD.WP
t
SU.WP
t
WC
1200
600
100
1200
600
600
0
100
600
50
1200
0
Typ
106
Max
400
50
900
300
300
5
Unit
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
cycles
Notes: 1. This parameter is sampled and not 100% tested.
2. t is the time from a stop condition to the end of internally controlled write cycle.
WC
3. This parameter is sampled and not 100% tested.
106 Cycles (Ta = 25°C)
105 Cycles (Ta = 85°C)
Notes
1
1
1
2
3
REJ03C0355-0001 Rev.0.01 Jan. 10, 2008
Page 5 of 22
5 Page R1EX24002AxxS0I
Device Addressing
The EEPROM device requires an 8-bit device address word following a start condition to enable the chip
for a read or a write operation. The device address word consists of 4-bit device code, 3-bit device address
code and 1-bit read/write(R/W) code. The most significant 4-bit of the device address word are used to
distinguish device type and this EEPROM uses “1010” fixed code. The device address word is followed
by the 3-bit device address code A2, A1,A0 . The device address code selects one device out of eight
devices which are connected to the bus. This means that the device is selected if the inputted 3-bit device
address code is equal to the corresponding hard-wired A2 to A0 pins status. The eighth bit of the device
address word is the read/write(R/W) bit. A write operation is initiated if this bit is “0” and a read
operation is initiated if this bit is “1” . The EEPROM turns to a stand-by state if the device code is not
www.DataSheet“41U0.c10o”mor device address code doesn’t coincide with status of the correspond hard-wired device address
pins.
Device Address Word
2k
Note:
Device address word (8-bit)
Device code (fixed)
1010
1. R/W=“1” is read and R/W = “0” is write.
Device address code
A2 A1
A0
R/W code*1
R/W
REJ03C0355-0001 Rev.0.01 Jan. 10, 2008
Page 11 of 22
11 Page |
Páginas | Total 24 Páginas | |
PDF Descargar | [ Datasheet R1EX24002ASAS0I.PDF ] |
Número de pieza | Descripción | Fabricantes |
R1EX24002ASAS0A | Two-wire serial interface 2k EEPROM | Renesas Technology |
R1EX24002ASAS0I | Two-wire serial interface 2k EEPROM | Renesas Technology |
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