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參數(shù)資料
| 型號： | BR24L32 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 4k】8 bit electrically erasable PROM |
| 中文描述： | 4K的】8位電可擦除可編程ROM |
| 文件頁數(shù)： | 18/26頁 |
| 文件大?。?/td> | 443K |
| 代理商： | BR24L32 |
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BR24L32-W / BR24L32F-W / BR24L32FJ-W / BR24L32FV-W
Memory ICs
18/25
6) I / O circuit
Pull up resister of SDA pin
The pull up resister is needed because SDA is NMOS open drain. Decide the value of this resister (R
PU
) properly,
by considering V
IL
, I
L
characteristics of a controller which control the device and V
OH
, I
OL
characteristics of the device.
If large R
PU
is chosen, clock frequency need to be slow. In case of small R
PU
, the operating current increases.
Maximum of R
PU
Maximum of R
PU
is determined by following factor.
c
SDA rise time determined by R
PU
and the capacitance of bus line (C
BUS
) must be less than T
R
.
And the other timing must keep the conditions of AC spec.
d
When SDA bus is HIGH, the voltage A of SDA bus determined by a total input leak (I
L
) of the all devices
connected
to the bus and R
PU
must be enough higher than input HIGH level of a controller and the device,
including noise margin 0.2V
CC
.
A
IL
IL
MICRO
COMPUTER
BR24LXX
SDA PIN
R
PU
THE CAPACITANCE OF
BUS LINE (C
BUS
)
V
CC
I
L
R
PU
0.2V
CC
V
IH
R
PU
0.8V
CC
V
IH
IL
R
PU
0.8
×
3
0.7
×
3
10
×
10
6
300 [k
]
Examples : When V
CC
=
3V I
L
=
10
μ
A V
IH
=
0.7V
CC
According to 2
=
<
=
<
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BR24L32F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| BR24L32FJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| BR24L32FJ-W | 制造商:ROHM 制造商全稱:Rohm 功能描述:4k】8 bit electrically erasable PROM |
| BR24L32FJ-WE2 | 功能描述:電可擦除可編程只讀存儲器 SRL 4KX8 BIT RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| BR24L32FJ-WTR | 制造商:ROHM 制造商全稱:Rohm 功能描述:High Reliability Series EEPROMs I2C BUS |
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