MCF5475 Datasheet, PDF (25/30 Pages) Freescale Semiconductor, Inc – Integrated Microprocessor Electrical Characteristics

General Timing Specifications
Table 18. MII Serial Management Channel Signal Timing
Num
M14
M15
Characteristic
MDC pulse width high
MDC pulse width low
Min
Max
Unit
40%
60% MDC period
40%
60% MDC period
M14
M15
MDC (Output)
M10
MDIO (Output)
M12
M11
MDIO (Input)
M13
Figure 22. MII Serial Management Channel TIming Diagram
13 General Timing Specifications
Table 19 lists timing specifications for the GPIO, PSC, DREQ, DACK, and external interrupts.
Table 19. General AC Timing Specifications
Name
Characteristic
G1 CLKIN high to signal output valid
G2 CLKIN high to signal invalid (output hold)
G3 Signal input pulse width
Min
Max
—
2
0
—
2
—
Unit
PSTCLK
ns
PSTCLK
14 I²C Input/Output Timing Specifications
Table 20 lists specifications for the I²C input timing parameters shown in Figure 23.
Table 20. I²C Input Timing Specifications Between SCL and SDA
Num
Characteristic
I1 Start condition hold time
I2 Clock low period
I3 SCL/SDA rise time (V_IL = 0.5 V to V_IH = 2.4 V)
I4 Data hold time
I5 SCL/SDA fall time (V_IH = 2.4 V to V_IL = 0.5 V)
Min Max
Units
2
— Bus clocks
8
— Bus clocks
—
1
mS
0
—
ns
—
1
mS
MCF5475 Integrated Microprocessor Electrical Characteristics, Rev. 3
Freescale Semiconductor
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