mcf52221 Freescale Semiconductor, Inc, mcf52221 Datasheet - Page 36

• Manufacturer Part Number: mcf52221
• Description: Mcf52223 Coldfire Microcontroller 32-bits Microcontrollers With Usb And Zigbee
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
2.10
Table 30
Table 31
36
lists specifications for the I
lists specifications for the I
Num
1
2
3
I
11
I2
I3
I4
I5
I6
I7
I8
I9
2
Num
Output numbers depend on the value programmed into the IFDR; an IFDR programmed with the
maximum frequency (IFDR = 0x20) results in minimum output timings as shown in
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 IFDR;
however, the numbers given in
Because SCL and SDA are open-collector-type outputs, which the processor can only actively drive
low, the time SCL or SDA take to reach a high level depends on external signal capacitance and pull-up
resistor values.
Specified at a nominal 50-pF load.
C Input/Output Timing Specifications
11
I2
I3
I4
I5
I6
I7
I8
I9
1
2
1
3
1
1
1
1
1
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 31. I
Table 30. I
Start condition hold time
Clock low period
I2C_SCL/I2C_SDA rise time
(V
Data hold time
I2C_SCL/I2C_SDA fall time
(V
Clock high time
Data setup time
Start condition setup time (for repeated start
condition only)
Stop condition setup time
IL
IH
= 0.5 V to V
= 2.4 V to V
2
2
C Output Timing Specifications between I2C_SCL and I2C_SDA
C Input Timing Specifications between I2C_SCL and I2C_SDA
2
2
C input timing parameters shown in
C output timing parameters shown in
IH
IL
Characteristic
IH
IL
= 2.4 V)
= 0.5 V)
MCF52223 ColdFire Microcontroller, Rev. 2
Characteristic
= 2.4 V to V
= 0.5 V to V
Table 31
IL
IH
are minimum values.
= 0.5 V)
= 2.4 V)
Figure
10 × t
10 × t
20 × t
10 × t
Figure
6 × t
7 × t
2 × t
Min
—
—
CYC
CYC
CYC
CYC
CYC
CYC
CYC
8.
8.
2 × t
2 × t
8 × t
4 × t
2 × t
Min
—
—
0
0
CYC
CYC
CYC
CYC
CYC
Max
—
—
—
—
—
—
—
—
3
Table
Max
—
—
—
—
—
—
—
1
1
Freescale Semiconductor
31. The I
Units
ns
ns
µs
ns
ns
ns
ns
ns
ns
Units
ms
ms
ns
ns
ns
ns
ns
ns
ns
2
C