AT89C51SND1C-ROTIL ATMEL Corporation, AT89C51SND1C-ROTIL Datasheet - Page 33
AT89C51SND1C-ROTIL
Manufacturer Part Number
AT89C51SND1C-ROTIL
Description
Single-Chip Microcontroller with MP3 Decoder and Man-Machine Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51SND1C-ROTIL.pdf
(47 pages)
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Waveforms
SPI Interface
Definition of Symbols
4106F–8051–10/02
Figure 17. External IDE 16-bit Bus Cycle – Data Read Waveforms
Note:
Figure 18. External IDE 16-bit Bus Cycle – Data Write Waveforms
Note:
Table 45. SPI Interface Timing Symbol Definitions
O
D15:8 is written in DAT16H SFR.
D15:8 is the content of DAT16H SFR.
C
ALE
I
WR
ALE
P0
P2
RD
P0
P2
Signals
Clock
Data In
Data Out
T
T
LHLL
T
LHLL
T
AVLL
AVLL
A15:8
A7:0
A15:8
A7:0
T
AVRL
T
T
T
LLAX
T
T
LLAX
AVWL
T
RLAZ
LLRL
AVDV
T
LLWL
T
RLDV
T
RLRH
T
QVWH
Data Out
Data Out
T
D15:81
WLWH
AT8xC51SND1C
D7:0
Data In
D15:81
Data In
D7:0
H
V
X
Z
L
T
RHDX
T
Conditions
RHDZ
T
T
WHQX
RHLH
T
WHLH
High
Low
Valid
No Longer Valid
Floating
33
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