pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 356

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

www.national.com
7.0 Device Specifications
In Figure 139 through Figure 142, an “o” is added to parameter names in the timing tables for output signals and an “i” for
input signals, as displayed in the preceding table:
Symbol
t
t
t
CSTRho
t
t
CSTOso
CSTRso
t
t
t
t
t
t
t
DHCso
DLCso
SDAho
SDAvo
SCLro
SDAfo
SDAro
SCLfo
BUFo
1. Test conditions: R
2. Not tested; guaranteed by design.
3. Not tested; guaranteed by characterization.
4. Depends on the signal’s capacitance and the pull-up value. Must be less than 1 s.
SDA
SCL
140, 141
Figure
140
140
141
141
140
139
139
139
139
142
142
Figure 139. ACB Signals (SDA and SCL) Rising Time and Falling Time
L
= 2.2 K to V
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
SDA signal fall time
SDA signal rise time
SDA hold time
SDA valid time
0.7 V
0.3 V
0.7 V
0.3 V
Description
(Continued)
CC
CC
CC
CC
CC
= 3.3V, C
t
t
SDAro
SDAri
t
t
SCLro
SCLri
L
= 400 pF to GND.
Before Stop condition
After Start condition
Before Start condition
Before SCL RE
Before SCL RE
After SCL FE
After SCL FE
Reference Conditions
356
0.7 V
0.3 V
0.7 V
0.3 V
CC
CC
CC
CC
t
t
t
t
SDAfo
SDAfi
7
SCLfo
SCLfi
t
t
t
t
t
t
SCLhigho
SCLhigho
SCLhigho
SCLhigho
SCLhigho
SCLhigho
*
t
SCLfo
Min
t
t
t
SDAro
SDAfo
CLK
See note
7
note
300
t
*
SDAro
Max
See
300
t
CLK
1,3,4
1,3
4
Unit
Revision 1.2
ns
ns
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