BU64562GWZ Datasheet, PDF (8/24 Pages) Rohm – Piezoelectric Actuator Driver

BD64562GWZ
Datasheet
●2-wire Serial Interface Data timing
SCL
SDA
tHD : STA
tBUF
tHIGH
tSU : DAT
tLOW
tHD : DAT
SCL
SDA
tSU : STA
tHD : STA
START BIT
tSU : STO
STOP BIT
Figure 8. Serial data timing
Figure 9. Start, Stop bit timing
Timing Characteristics (Unless otherwise specified, Ta = 25 °C, VCC = 2.3 to 4.8 V)
Parameter
FAST-MODE^*8
STANDARD-MODE^*8
Symbol
Unit
Min. Typ. Max. Min. Typ. Max.
SCL clock frequency
fSCL
-
-
400
-
-
100 kHz
High period of the SCL clock
tHIGH 0.6
-
-
4.0
-
-
µs
Low period of the SCL clock
tLOW 1.3
-
-
4.7
-
-
µs
Hold time (repeated) START condition
tHD:STA 0.6
-
-
4.0
-
-
µs
Set-up time (repeated) START condition
tSU:STA 0.6
-
-
4.7
-
-
µs
Data hold time
tHD:DAT 0
-
0.9
0
-
3.45 µs
Data set-up time
tSU:DAT 100
-
-
250
-
-
ns
Set-up time for STOP condition
tSU:STO 0.6
-
-
4.0
-
-
µs
Bus free time between a STOP and START
condition
tBUF
1.3
-
-
4.7
-
-
µs
Pulse width of spikes which must be
suppressed by the input filter
tI
0
-
50
0
-
50
ns
*8 Standard-mode and Fast-mode 2-wire serial interface devices must be able to transmit or receive at that speed
The maximum bit transfer rates of 100 kHz for Standard-mode devices and 400 kHz for Fast-mode devices.
This transfer rates is provided the maximum transfer rates, for example it is able to drive 100 kHz of clocks with Fast-mode.
●Recommend to power supply turning on operation timing
VCC
PS
50 %
50 %
50 %
50 %
2-wire serial input
50 %
50 %
tPS
tI2C
Serial data
tI2C tPS
Figure 10. Sequence of data input timing to power supply
Parameter
PS input High voltage set-up time
2-wire serial interface input data set-up time
PS input Low voltage set-up time
2-wire serial interface input data set-up time
Recommendation limit
Symbol
Unit
Min. Typ. Max.
tPS1
50
-
-
µs
tI2C1
50
-
-
µs
tPS2
0
-
-
µs
tI2C2
0
-
-
µs
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TSZ22111・15・001
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TSZ02201-0H2H0B600450-1-2
9.Oct.2012 Rev.001