BU21028FV-M Datasheet, PDF (7/36 Pages) Rohm – 4-wire Resistive Touch Screen Controller

BU21028FV-M
Host interface AC timing
The slave address for 2-wire serial interface is selectable from “40h” or “41h” by “AD0” input.
AD0 = “L” : Slave Address = 40h
AD0 = “H” : Slave Address = 41h
t_{HD_STA}
t_{SU_DAT}
t_{HD_DAT}
t_{SU_STA}
t_{HD_STA}
t_{SU_STO}
t_BUF
SDA
t_LOW
t_HIGH
t_R
t_F
SCL
START
CONDITION
REPEATED
START
CONDITION
STOP
CONDITION
START
CONDITION
2-wire serial I/F AC timing characteristics (Tj=25℃, VDD=VDDP=3.00V, GND=0.00V, unless otherwise noted)
PARAMETER
SCL clock frequency
Hold time for (repeated) START condition
Low period of SCL
High period of SCL
Setup time for repeated START condition
Data hold time
Data setup time
Rise time for both SCL and SDA
Fall time for both SCL and SDA
Setup time for STOP condition
Bus free time between a STOP
and START condition
SYMBOL
fSCL
tHD_STA
tLOW
tHIGH
tSU_STA
tHD_DAT
tSU_DAT
tR
tF
tSU_STO
tBUF
MIN
RATING
TYP
MAX
UNIT
0
-
400
kHz
0.6
-
-
us
1.3
-
-
us
0.6
-
-
us
0.6
-
-
us
0
-
0.9
us
0.1
-
-
us
-
-
300
ns
-
-
300
ns
0.6
-
-
us
1.3
-
-
us
CONDITION
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TSZ02201-0L5L0F300720-1-2
27.May.2016 Rev.002