Rainbow-electronics AT89C5132 Manual de usuario descargar pdf (Pagina 145)

145

AT8xC5132

4173A–8051–08/02

Waveforms Figure 121. External IDE 16-bit Bus Cycle – Data Read Waveforms

Note: D15:8 is written in DAT16H SFR.

Figure 122. External IDE 16-bit Bus Cycle – Data Write Waveforms

Note: D15:8 is the content of DAT16H SFR.

SPI Interface

Definition of Symbols Table 135. SPI Interface Timing Symbol Definitions

AVDV

LLAX

RHDX

RHDZ

AVLL

AVRL

ALE

LHLL

RLRH

Data In

RLAZ

LLRL

RHLH

RLDV

D7:0A7:0

Data In

D15:81A15:8

WHLH

AVWL

LLAX

WHQX

ALE

LHLL

WLWH

AVLL

QVWH

D7:0

Data Out

LLWL

A7:0

D15:81

Data Out

A15:8

Signals Conditions

C Clock H High

I Data In L Low

O Data Out V Valid

X No Longer Valid

ZFloating

1 2 ... 140 141 142 143 144 145 146 147 148 149 150 ... 161 162

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Rainbow-electronics AT89C5132 Manual de usuario Pagina 145

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