BR24C01 ROHM Electronics, BR24C01 Datasheet - Page 12

• Manufacturer Part Number: BR24C01
• Manufacturer: ROHM Electronics

Memory ICs
! ! ! ! Operation notes
(1) During power rise
(2) SDA terminal pull-up resistance
Note : All memory array data are set to “FF” status at time of shipping.
During power rise, the V
work. For this reason, there is a risk of misoperation when the power rises without full IC internal reset.
To prevent this, pay attention to the following points during a power rise.
Follow the steps below as to operate the P. O. R. circuit properly.
The SDA terminal is an open drain output.
appropriate pull-up resistance value is selected from the IC V
measuring data, as well as V
Recommended values 2.0k to 10kW
1) Set SCL = SDA = “HIGH”
2) Raise the power so as to active the Power On Reset (P. O. R) circuit.
1) Set the power rise time (tR) to within 10ms.
2) Set the OFF domain for once power has been cut to 100mS minimum.
V
CC
=3.0V
Ta=85 °C
0.45
0.35
0.25
0.15
0.05
0.4
0.3
0.2
0.1
0
V
0
Fig.19 V
CC
=5.0V
BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W /
OUTPUT CURRENT : I
1
OL
BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W
V
−I
CC
OL
CC
=3.0V
2
features (Note : Typ.)
may rise passing though the low voltage domain in which the IC internal circuit does not
IL
Ta=25 °C
and I
3
V
CC
OL
V
LI
=5.0V
CC
(mA)
and other personal icons that control the IC in question.
4
V
5
CC
=3.0V
Ta=−40 °C
Consequently, it requires an external pull-up resistance.
V
CC
=5.0V
t
OFF
OL
-I
OL
t
R
features., which have been appended as
The