OM11043 NXP Semiconductors, OM11043 Datasheet - Page 55

• Manufacturer Part Number: OM11043
• Description: DEVELOPMENT BOARD LPC1768 MBED
• Manufacturer: NXP Semiconductors
• Series: mbedr
• Type: MCUr

Specifications of OM11043

• Contents: Board and software
• Development Tool Type: Hardware / Software - Eval/Demo Board
• Kit Contents: Board Cable Docs
• Mcu Supported Families: LPC1000
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Silicon Manufacturer: NXP
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: LPC17xx
• Silicon Family Name: LPC17xx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: LPC1768
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4916

NXP Semiconductors
LPC1769_68_67_66_65_64_63
Product data sheet
11.5 I
Table 13.
T
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] A Fast-mode I
Symbol
f
t
t
t
t
t
2
SCL
f
LOW
HIGH
HD;DAT
SU;DAT
amb
C-bus
See the I
Parameters are valid over operating temperature range unless otherwise specified.
t
and the acknowledge.
A device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the
V
C
The maximum t
output stage t
SDA and the SCL pins and the SDA/SCL bus lines without exceeding the maximum specified t
In Fast-mode Plus, fall time is specified the same for both output stage and bus timing. If series resistors
are used, designers should allow for this when considering bus timing.
The maximum t
the maximum of t
maximum must only be met if the device does not stretch the LOW period (t
clock stretches the SCL, the data must be valid by the set-up time before it releases the clock.
t
transmission and the acknowledge.
250 ns must then be met. This will automatically be the case if the device does not stretch the LOW period
of the SCL signal. If such a device does stretch the LOW period of the SCL signal, it must output the next
data bit to the SDA line t
specification) before the SCL line is released. Also the acknowledge timing must meet this set-up time.
HD;DAT
SU;DAT
=
IH
b
−
= total capacitance of one bus line in pF.
(min) of the SCL signal) to bridge the undefined region of the falling edge of SCL.
40
is the data hold time that is measured from the falling edge of SCL; applies to data in transmission
is the data set-up time that is measured with respect to the rising edge of SCL; applies to data in
°
Dynamic characteristic: I
C to +85
2
C-bus specification UM10204 for details.
Parameter
SCL clock
frequency
fall time
LOW period of
the SCL clock
HIGH period of
the SCL clock
data hold time
data set-up
time
f
2
All information provided in this document is subject to legal disclaimers.
is specified at 250 ns. This allows series protection resistors to be connected in between the
C-bus device can be used in a Standard-mode I
HD;DAT
f
for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA
VD;DAT
°
C.
could be 3.45 μs and 0.9 μs for Standard-mode and Fast-mode but must be less than
Rev. 6.01 — 11 March 2011
[2]
or t
r(max)
VD;ACK
[4][5][6][7]
[3][4][8]
[9][10]
+ t
SU;DAT
by a transition time (see the I
LPC1769/68/67/66/65/64/63
2
= 1000 + 250 = 1250 ns (according to the Standard-mode I
C-bus pins
Conditions
Standard-mode
Fast-mode
Fast-mode Plus
of both SDA and
SCL signals
Standard-mode
Fast-mode
Fast-mode Plus
Standard-mode
Fast-mode
Fast-mode Plus
Standard-mode
Fast-mode
Fast-mode Plus
Standard-mode
Fast-mode
Fast-mode Plus
Standard-mode
Fast-mode
Fast-mode Plus
[1]
32-bit ARM Cortex-M3 microcontroller
2
C-bus system but the requirement t
2
C-bus specification UM10204). This
Min
0
0
0
-
20 + 0.1 × C
-
4.7
1.3
0.5
4.0
0.6
0.26
0
0
0
250
100
50
LOW
b
) of the SCL signal. If the
© NXP B.V. 2011. All rights reserved.
Max
100
400
1
300
300
120
-
-
-
-
-
-
-
-
-
-
-
-
f
.
Unit
kHz
kHz
MHz
ns
ns
ns
μs
μs
μs
μs
μs
μs
μs
μs
μs
ns
ns
ns
2
SU;DAT
55 of 79
C-bus
=