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EM773 Datasheet(PDF) 32 Page - NXP Semiconductors

Part # EM773
Description  Energy metering IC; up to 32 kB flash and 8 kB SRAM
PDF  45 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

EM773 Datasheet(HTML) 32 Page - NXP Semiconductors

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EM773
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Objective data sheet
Rev. 1 — 1 September 2010
32 of 45
NXP Semiconductors
EM773
Energy metering IC
10.4 I/O pins
[1]
Applies to standard port pins and RESET pin.
10.5 I2C-bus
[1]
See the I2C-bus specification UM10204 for details.
[2]
Parameters are valid over operating temperature range unless otherwise specified.
[3]
tHD;DAT is the data hold time that is measured from the falling edge of SCL; applies to data in transmission
and the acknowledge.
[4]
A device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the
VIH(min) of the SCL signal) to bridge the undefined region of the falling edge of SCL.
[5]
Cb = total capacitance of one bus line in pF.
Table 10.
Dynamic characteristic: I/O pins[1]
Tamb = −40 °C to +85 °C; 3.0 V ≤ VDD ≤ 3.6 V.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tr
rise time
pin
configured as
output
3.0
-
5.0
ns
tf
fall time
pin
configured as
output
2.5
-
5.0
ns
Table 11.
Dynamic characteristic: I2C-bus pins[1]
Tamb = −40 °C to +85 °C.[2]
Symbol
Parameter
Conditions
Min
Max
Unit
fSCL
SCL clock
frequency
Standard-mode
0
100
kHz
Fast-mode
0
400
kHz
Fast-mode Plus
0
1
MHz
tf
fall time
[4][5][6][7]
of both SDA and
SCL signals
Standard-mode
-300
ns
Fast-mode
20 + 0.1
× C
b
300
ns
Fast-mode Plus
-
120
ns
tLOW
LOW period of
the SCL clock
Standard-mode
4.7
-
μs
Fast-mode
1.3
-
μs
Fast-mode Plus
0.5
-
μs
tHIGH
HIGH period of
the SCL clock
Standard-mode
4.0
-
μs
Fast-mode
0.6
-
μs
Fast-mode Plus
0.26
-
μs
tHD;DAT
data hold time
[3][4][8]
Standard-mode
0
-
μs
Fast-mode
0
-
μs
Fast-mode Plus
0
-
μs
tSU;DAT
data set-up
time
[9][10]
Standard-mode
250
-
ns
Fast-mode
100
-
ns
Fast-mode Plus
50
-
ns



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