pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 355

• Manufacturer Part Number: pc87591l-n05
• Description: Lpc Mobile Embedded Controller
• Manufacturer: National Semiconductor Corporation

Revision 1.2
7.0 Device Specifications
7.6.9
t
Symbol
t
t
t
SCLhigho
t
t
t
SCLhighi
SCLlowo
SCLlowi
CSTRhi
t
t
CSTOsi
CSTRsi
t
t
t
t
t
t
t
DHCsi
DLCsi
SDAhi
SDAsi
SCLri
SDAfi
SDAri
SCLfi
BUFi
ACCESS.bus Timing
PSCLK1-4
140, 141
Figure
140
140
141
141
140
139
139
142
142
139
139
142
142
142
142
CLK
Bus free time between Stop
and Start conditions
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 setup time
SCL high time
SCL low time
Figure 138. PS/2 Clock Signal Pulled Low by PC87591L-N05
Description
(Continued)
t
PSCLKa
ACB Output Timing
ACB Input Timing
Before Stop condition
After Start condition
Before Start condition
Before SCL RE
Before SCL RE
After SCL FE
After SCL RE
After SCL FE
Before SCL RE
After SCL RE
After SCL FE
Reference Conditions
355
t
K
K
8
8
8
PSCLKia
16
16
t
2
2
2
SCLhigho
*
*
*
t
t
t
*
*
1 s
1 s
Min
SCLri
SCLri
SCLri
*
*
*
t
t
t
*
*
t
t
CLK
CLK
CLK
0
CLK
CLK
t
t
t
CLK
CLK
t
t
CLK
CLK
CLK
300
300
Max
1
1
1,2
1,2
1,2
1,2
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Unit
ns
ns
ns
-
-
-
-
-
-
-
-
-
-
-
s
s