cp3ub17 National Semiconductor Corporation, cp3ub17 Datasheet - Page 186

• Manufacturer Part Number: cp3ub17
• Description: Reprogrammable Connectivity Processor With Usb Interface
• Manufacturer: National Semiconductor Corporation

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26.10
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
o
t
t
t
t
Symbol Figure
BUFi
CSTOsi
CSTRhi
CSTRsi
DHCsi
DLCsi
SCLfi
SCLri
SCLlowi
SCLhighi
SDAfl
SDAri
SDAhi
SDAsi
BUFo
CSTOso
CSTRho
CSTRso
DHCso
DLCso
SCLfo
SCLro
SCLlowo
SCLhigh
SDAfo
SDAro
SDAho
SDAvo
ACCESS.BUS TIMING
74
74
74
74
75
74
73
73
76
76
73
73
76
76
74
74
74
75
75
74
73
73
76
76
73
73
76
76
Bus free time between Stop and Start
Condition
SCL setup time
SCL hold time
SCL setup time
Data High setup time
Data Low setup time
SCL signal Rise time
SCL signal Fall time
SCL low time
SCL high time
SDA signal Fall time
SDA signal Rise time
SDA hold time
SDA setup time
Bus free time between Stop and Start
Condition
SCL setup time
SCL hold time
SCL setup time
Data High setup time
Data Low setup time
SCL signal Fall time
SCL signal Rise time
SCL low time
SCL high time
SDA signal Fall time
SDA signal Rise time
SDA hold time
SDA valid time
Description
Table 59 ACCESS.bus Signals
ACCESS.bus Output Signals
ACCESS.bus Input Signals
Before Stop Condition
After Start Condition
Before Start Condition
Before SCL Rising Edge
(RE)
Before SCL RE
After SCL Falling Edge
(FE)
After SCL RE
After SCL FE
Before SCL RE
Before Stop Condition
After Start Condition
Before Start Condition
Before SCL R.E.
Before SCL R.E.
After SCL F.E.
After SCL R.E.
After SCL F.E.
After SCL F.E.
186
Reference
(8 × t
(8 × t
(8 × t
t
t
t
t
t
t
(K × t
(K × t
(7 × t
SCLhigho
SCLhigho
SCLhigho
SCLhigho
SCLhigho
SCLhigho
16 × t
16 × t
Min (ns)
t
2 × t
2 × t
2 × t
SCLhigho
CLK
CLK
CLK
CLK
CLK
CLK
0
-
-
-
-
-
-
-
-
-
) - t
) - t
) - t
) - t
CLK
CLK
CLK
) -1
) -1
-t
-t
CLK
CLK
SDAro
SDAfo
SCLfo
SCLri
SCLri
SCLri
e
e
(7 × t
Max (ns)
300
1000
1000
CLK
300
300
300
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
d
) + t
c
RD