
12
AT85C51SND3Bx
7632A–MP3–03/06
Waveforms Figure 144. MMC Input-Output Waveforms
LCD Interface To be defined
Definition of Symbols
Timings
Waveforms
SIO Interface To be defined
Definition of Symbols
Timings
Waveforms
SPI Interface
Definition of Symbols Table 270. SPI Interface Timing Symbol Definitions
Timings Test conditions: capacitive load on all pins= 50 pF.
T
IVCH
MCLK
MDAT Input
T
CHCH
T
CLCX
T
CHCX
T
CHCL
T
CLCH
MCMD Input
T
CHIX
T
OVCH
MDAT Output
MCMD Output
T
CHOX
Signals Conditions
C Clock H High
I Data In L Low
O Data Out V Valid
X No Longer Valid
Z Floating
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