Datasheet

Technical Note
6/21
BR24T□□□-W Series
www.rohm.com
2011.1 - Rev.H
© 2011 ROHM Co., Ltd. All rights reserved.
●Characteristic data (The following values are Typ. ones.)
-200
-100
0
100
200
300
0123456
SUPPLY VOLTAGE : Vcc(V)
INPUT DATA SET UP TIME : t
SU : DAT
(ns)
0.0
0.5
1.0
1.5
2.0
0123456
SUPPLY VOLTAGE : Vcc(V)
OUTPUT DATA DELAY TIME : t
PD
(us)
Fig.24 Input Data setup time t
SU : DAT
(LOW)
0.0
0.5
1.0
1.5
2.0
0123456
SUPPLY VOLTAGE : Vcc(V)
OUTPUT DATA DELAY TIME : t
PD
(us)
Fig.25
'
L
' Data output delay time
t
PD
0
Fig.26 'H' Data output delay time
ｔ
PD
1
0
0.5
1
1.5
2
0123456
SUPPLY VOLTAGE : Vcc(V)
BUS OPEN TIME
BEFORE TRANSMISSION : t
BUF
(us)
Fig.27 BUS open time before transmission
ｔ
BUF
0
1
2
3
4
5
6
0123456
SUPPLY VOLTAGE : Vcc(V)
INTERNAL WRITING
CYCLE TIME : t
WR
(ms)
Fig.28 Internal writing cycle time
ｔ
WR
0
0.1
0.2
0.3
0.4
0.5
0.6
0123456
SUPPLY VOLTAGE : Vcc(V)
NOISE REDUCTION
EFECTIVE TIME : t
l
(SCL H) (us)
Fig.29 Noise reduction efection time
t
l
（SCL H）
Fig.30 Noise reduction efective time
t
l
（SCL L）
0
0.1
0.2
0.3
0.4
0.5
0.6
0123456
SUPPLY VOLTAGE : Vcc(V)
NOISE REDUCTION
EFECTIVE TIME : t
l
(SCL L)(us)
Fig.31 Noise resuction efecctive time
ｔ
ｌ
（SDA H）
0
0.1
0.2
0.3
0.4
0.5
0.6
0123456
SUPPLY VOLATGE : Vcc(V)
NOISE REDUCTION
EFECTIVE TIME : t
l
(SDA H)(us)
Fig.32 Noise reduction efective time t
l
（
SDA L
）
0
0.1
0.2
0.3
0.4
0.5
0.6
0123456
SUPPLY VOLTAGE : Vcc(V)
NOISE REDUCTION
EFFECTIVE TIME : t
l
(SAD L)(us)
Fig.33 WP setup time
t
SU : WP
-0.60
-0.50
-0.40
-0.30
-0.20
-0.10
0.00
0.10
0.20
0123456
SUPPLY VOLTAGE : Vcc(V)
WP SET UP TIME : t
SU : WP
(us)
Fig.34 WP efective time
t
HIGH : WP
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0123456
SUPPLYVOLTAGE : Vcc(V)
WP EFFECTIVE TIME : t
HIGH : WP
(us)
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
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