Atmel AT89C5132 28, 6.3.5.3 Waveforms Figure 6-17. MMC Input Output Waveforms

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4173ES–USB–09/07
AT89C5132
6.3.5 MMC Interface
6.3.5.1 Definition of Symbols
Table 14. MMC Inter face Timing Symbol Definitions
6.3.5.2 Timings Table 15. M MC Interface AC Timings
VDD = 2.7 to 3.3 V, TA = -40 to +85°C, CL ≤ 100pF (10 cards)
6.3.5.3 Waveforms
Figure 6-17. 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X No Longer Valid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 M ax Unit
TCHCH Clock Period 50 ns
TCHCX Clock High Time 10 ns
TCLCX Clock Low Time 10 ns
TCLCH Clock Rise Time 10 ns
TCHCL Clock Fall Time 10 ns
TDVCH Input Data Valid to Clock High 3 ns
TCHDX Input Data Hold after Clock High 3 ns
TCHOX Output Data Hold after Clock High 5 ns
TOVCH Output Data Valid to Clock High 5 ns
TIVCH
MCLK
MDAT Input
TCHCH
TCLCX TCHCX
TCHCL TCLCH
MCMD Input
TCHIX
TOVCH
MDAT Output
MCMD Output
TCHOX