mcf52258 Freescale Semiconductor, Inc, mcf52258 Datasheet - Page 36

• Manufacturer Part Number: mcf52258
• Description: Mcf52259 Coldfire Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
Table 23
36
lists specifications for the I
Num
1
2
3
11
I2
I3
I4
I5
I6
I7
I8
I9
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.
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 23. I
Table 22. 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
C output timing parameters shown in
IH
IL
Characteristic
IH
IL
= 2.4 V)
= 0.5 V)
MCF52259 ColdFire Microcontroller, Rev. 1
Characteristic
= 2.4 V to V
= 0.5 V to V
Table 23
IL
IH
are minimum values.
= 0.5 V)
= 2.4 V)
10 × t
10 × t
20 × t
10 × t
Figure
6 × t
7 × t
2 × t
Min
—
—
CYC
CYC
CYC
CYC
CYC
CYC
CYC
13.
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
23. The I
Units
ns
ns
μs
ns
ns
ns
ns
ns
ns
Units
ms
ms
ns
ns
ns
ns
ns
ns
ns
2
C