SCFLXRAYADPTS12 Freescale Semiconductor, SCFLXRAYADPTS12 Datasheet - Page 31

• Manufacturer Part Number: SCFLXRAYADPTS12
• Description: ADAPTER BOARD FRDC
• Manufacturer: Freescale Semiconductor

Specifications of SCFLXRAYADPTS12

• Accessory Type: *
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8
I2C-bus input and output timing parameters.
1
2
3
Freescale Semiconductor
Output numbers are dependent on the value programmed into the MFDR; an MFDR programmed with the maximum frequency (MFDR =
0x20) will result in minimum output timings as shown. The MBUS interface is designed to scale the actual data transition time to move it to
the middle of the SCL low period. The actual position is affected by the prescale and division values programmed into the MFDR; however,
numbers given are the minimum values.
Since SCL and SDA are open-collector-type outputs, which the processor can only actively drive low, the time required for SCL or SDA to
reach a high level depends on external signal capacitance and pull-up resistor values.
Specified at a nominal 20 pF load.
Num
M1
M2
M3
M4
M5
M6
M7
M8
M9
Num
M1
M2
M3
M4
M5
M6
M7
M8
M9
1
1
2
1
3
1
1
1
1
SDA
SCL
provides the I2C-bus input and output timing diagram and
Start Condition Hold Time
Clock Low Period
SCL/SDA Rise Time (VIL= 0.5 V to VIH = 2.4 V)
Data Hold Time
SCL/SDA Fall Time (VIH= 2.4 V to VIL = 0.5 V)
Clock High time
Data Setup Time
Start Condition Setup Time (for repeated start condition only)
Stop Condition Setup Time
Start Condition Hold Time
Clock Low Period
SCL/SDA Rise Time (V
Data Hold Time
SCL/SDA Fall Time (V
Clock High time
Data Setup Time
Start Condition Setup Time (for repeated start condition only)
Stop Condition Setup Time
Table 27. I2C-Bus Output Timing Specifications Between SCL and SDA
Table 26. I2C-Bus Input Timing Specifications Between SCL and SDA
M1
Figure 8. I2C-Bus Input/Output Timing Definition Diagram
M2
IH
IL
= 2.4 V to V
SCF5250 Data Sheet:
= 0.5 V to V
M4
Characteristic
Characteristic
IL
IH
= 0.5 V)
= 2.4 V)
M6
Technical
M7
Data,
Rev. 1.3
M8
Table 26
note 2
Min
10
10
20
10
6
7
–
2
Min
and
M5
2
8
–
0
–
4
0
2
2
M3
Table 27
note 2
Max
Max
–
–
–
3
–
–
–
–
–
–
1
–
1
–
–
–
–
M9
provide the
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
bus clocks
Units
mSec
Units
mSec
ms
ns
ns
ns
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