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SA56004X
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 7  25 February 2013
28 of 43
NXP Semiconductors
SA56004X
Digital temperature sensor with overtemperature alarms
 
[1]   The switching characteristics of the SA56004X fully meet or exceed all parameters specified in SMBus version 2.0. The following
parameters specify the timing between the SCLK and SDATA signals in the SA56004X. They adhere to, but are not necessarily
specified as the SMBus specifications.
[2]   Delay from SDATA STOP to SDATA START.
[3]   Delay from SDATA START to first SCLK HIGH-to-LOW transition.
[4]   Delay from SCLK HIGH-to-LOW transition to SDATA edges.
[5]   Delay from SDATA edges to SCLK LOW-to-HIGH transition.
[6]   Delay from SCLK LOW-to-HIGH transition to restart SDATA.
[7]   Delay from SCLK HIGH-to-LOW transition to SDATA STOP condition.
[8]   LOW period for reset of SMBus.
 
Table 21.   SMBus interface characteristics
V
DD
 = 3.0 V to 3.6 V; T
amb
 = -40 ?/SPAN>C to +125 ?/SPAN>C; unless otherwise specified.
These specifications are guaranteed by design and not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
IH
HIGH-level input voltage
SCLK, SDATA; V
DD
= 2.7 V to 5.5 V
2.2
-
-
V
V
IL
LOW-level input voltage
SCLK, SDATA; V
DD
= 2.7 V to 5.5 V
-
-
0.8
V
I
OL
LOW-level output current
ALERT
, T_CRIT
; V
OL
= 0.4 V
1.0
-
-
mA
SDATA; V
OL
= 0.6 V
6.0
-
-
mA
I
OH
HIGH-level output current
-
-
1.0
mA
I
IL
LOW-level input current
-1.0
-
-
mA
I
IH
HIGH-level input current
-
-
1.0
mA
C
i
input capacitance
SCLK, SDATA
-
5
-
pF
SMBus digital switching characteristics
[1]
f
SCLK
SCLK operating frequency
-
-
400
kHz
t
LOW
SCLK LOW time
10 % to 10 %
600
5000
-
ns
t
HIGH
SCLK HIGH time
90 % to 90 %
600
5000
-
ns
t
BUF
SMBus free time
[2]
600
-
-
ns
t
HD;STA
hold time of START condition
[3]
10 % of SDATA to 90 % of SCLK
600
-
-
ns
t
HD;DAT
hold time of data
[4]
0
300
-
ns
t
SU;DAT
set-up time of data in
[5]
250
-
-
ns
t
SU;STA
set-up time of repeat START
condition
[6]
90 % to 90 %
250
-
-
ns
t
SU;STO
set-up time of STOP condition
[7]
90 % of SCLK to 90 % of SDATA
250
-
-
ns
t
r
rise time
SCLK and SDATA
-
-
1
ms
t
f
fall time
SCLK and SDATA
-
-
300
ns
t
of
output fall time
C
L
 = 400 pF; I
O
 = 3 mA
-
-
250
ns
t
to(SMBus)
SMBus time-out time
[8]
25
-
35
ms
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