Rainbow-electronics AT89C5132 Manual do Utilizador descarregar pdf (Página 149)

149

AT8xC5132

4173A–8051–08/02

Specific Controller To be defined.

MMC Interface

Definition of Symbols Table 137. MMC Interface Timing Symbol Definitions

Timings Table 138. MMC Interface AC timings

= 2.7 to 3.3V, T

= 0 to 70°C, CL ≤ 100pF (10 Cards)

Waveforms Figure 127. MMC Input Output Waveforms

Signals Conditions

C Clock H High

D Data In L Low

O Data Out V Valid

X No Longer Valid

Symbol Parameter Min Max Unit

CHCH

Clock Period 50 ns

CHCX

Clock High Time 10 ns

CLCX

Clock Low Time 10 ns

CLCH

Clock Rise Time 10 ns

CHCL

Clock Fall Time 10 ns

DVCH

Input Data Valid to Clock High 3 ns

CHDX

Input Data Hold after Clock High 3 ns

CHOX

Output Data Hold after Clock High 5 ns

OVCH

Output Data Valid to Clock High 5 ns

IVCH

MCLK

MDAT Input

CHCH

CLCX

CHCX

CHCL

CLCH

MCMD Input

CHIX

OVCH

MDAT Output

MCMD Output

CHOX

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 161 162

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