AT89C51SND1C-ROTIL ATMEL Corporation, AT89C51SND1C-ROTIL Datasheet - Page 38

• Manufacturer Part Number: AT89C51SND1C-ROTIL
• Description: Single-Chip Microcontroller with MP3 Decoder and Man-Machine Interface
• Manufacturer: ATMEL Corporation

MMC Interface
Definition of Symbols
Timings
Waveforms
38
AT8xC51SND1C
Table 48. MMC Interface Timing Symbol Definitions
Table 49. MMC Interface AC Timings
V
Figure 24. MMC Input-Output Waveforms
T
T
T
T
T
T
T
T
T
DD
OVCH
CHCH
CHCX
CLCX
CLCH
CHCL
DVCH
CHDX
CHOX
= 2.7 to 3.3V, T
Symbol
O
C
D
MCMD Output
MDAT Output
MCMD Input
MDAT Input
Signals
MCLK
Parameter
Clock Period
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
Input Data Valid to Clock High
Input Data Hold after Clock High
Output Data Hold after Clock High
Output Data Valid to Clock High
Clock
Data In
Data Out
A
= 0 to 70°C, CL ≤ 100 pF (10 Cards)
T
CHIX
T
T
CHCX
CHOX
T
CHCL
T
CHCH
T
CLCX
T
H
V
X
Min
L
50
10
10
OVCH
3
3
5
5
T
CLCH
T
Conditions
IVCH
Max
High
Low
Valid
No Longer Valid
10
10
4106F–8051–10/02
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns