Rainbow Electronics AT89C5132 User Manual
Page 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
V
DD
= 2.7 to 3.3V, T
A
= 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No Longer Valid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
T
CHCH
Clock Period
50
ns
T
CHCX
Clock High Time
10
ns
T
CLCX
Clock Low Time
10
ns
T
CLCH
Clock Rise Time
10
ns
T
CHCL
Clock Fall Time
10
ns
T
DVCH
Input Data Valid to Clock High
3
ns
T
CHDX
Input Data Hold after Clock High
3
ns
T
CHOX
Output Data Hold after Clock High
5
ns
T
OVCH
Output Data Valid to Clock High
5
ns
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