MPC857DSL Motorola, MPC857DSL Datasheet - Page 67

• Manufacturer Part Number: MPC857DSL
• Description: (MPC857 / MPC862) Hardware Specifications
• Manufacturer: Motorola

11.12 I
Table 26 provides the I
1
Table 27 provides the I
1
MOTOROLA
Num
Num
SCL frequency is given by SCL = BRGCLK_frequency / ((BRG register + 3) * pre_scaler * 2).
The ratio SyncClk/(BRGCLK/pre_scaler) must be greater or equal to 4/1.
SCL frequency is given by SCL = BrgClk_frequency / ((BRG register + 3) * pre_scaler * 2).
The ratio SyncClk/(Brg_Clk/pre_scaler) must be greater or equal to 4/1.
200
200
202
203
204
205
206
207
208
209
210
211
200
200
202
203
204
205
206
207
208
209
210
211
SCL clock frequency (slave)
SCL clock frequency (master)
Bus free time between transmissions
Low period of SCL
High period of SCL
Start condition setup time
Start condition hold time
Data hold time
Data setup time
SDL/SCL rise time
SDL/SCL fall time
Stop condition setup time
SCL clock frequency (slave)
SCL clock frequency (master)
Bus free time between transmissions
Low period of SCL
High period of SCL
Start condition setup time
Start condition hold time
Data hold time
Data setup time
SDL/SCL rise time
SDL/SCL fall time
Stop condition setup time
2
C AC Electrical Specifications
Characteristic
2
2
C (SCL < 100 KHz) timings.
C (SCL > 100 kHz) timings.
MPC862/857T/857DSL Hardware Specifications
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 27. I
Table 26. I
Characteristic
1
1
Go to: www.freescale.com
2
2
C Timing (SCL < 100 KH
C Timing (SCL > 100 kH
Expression
fSCL
fSCL
—
—
—
—
—
—
—
—
—
—
BRGCLK/16512
1/2(2.2 * fSCL)
1/(2.2 * fSCL)
1/(2.2 * fSCL)
1/(2.2 * fSCL)
1/(2.2 * fSCL)
1/(2.2 * fSCL)
1/(40 * fSCL)
Min
—
—
0
0
Z
Z
)
)
All Frequencies
CPM Electrical Characteristics
All Frequencies
Min
250
1.5
4.7
4.7
4.0
4.7
4.0
4.7
—
—
0
0
1/(10 * fSCL)
1/(33 * fSCL)
BRGCLK/48
BRGCLK/48
Max
—
—
—
—
—
—
—
—
Max
100
100
300
—
—
—
—
—
—
—
—
1
Unit
Unit
kHz
kHz
Hz
Hz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
s
s
s
s
s
s
s
s
s
s
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