se98a NXP Semiconductors, se98a Datasheet - Page 32

• Manufacturer Part Number: se98a
• Description: Ddr Memory Module Temp Sensor, 1.7 V To 3.6 V
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 27.
V
The AC specifications fully meet or exceed SMBus 2.0 specifications, but allow the bus to interface with the I
to 400 kHz.
[1]
[2]
[3]
[4]
[5]
SE98A_1
Product data sheet
Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SCL
LOW
HIGH
BUF
HD;STA
h(Q)
HD;DAT
VD;DAT
SU;DAT
SU;STA
SU;STO
r
f
f(o)
to(SMBus)
POR
DD
= 1.7 V to 3.6 V; T
Delay from SDA STOP to SDA START.
Delay from SDA START to first SCL HIGH-to-LOW transition.
Delay from SCL HIGH-to-LOW transition to SDA edges.
A device must internally provide a hold time of at least 200 ns for SDA signal (referenced to the V
undefined region of the falling edge of SCL.
Delay from SCL LOW-to-HIGH transition to restart SDA.
Parameter
SCL clock frequency
LOW period of the SCL clock 30 % to 30 %
HIGH period of the SCL clock 70 % to 70 %
bus free time between a
STOP and START condition
hold time (repeated) START
condition
data output hold time
data hold time
data valid time
data set-up time
set-up time for a repeated
START condition
set-up time for STOP
condition
rise time of both SDA and
SCL signals
fall time of both SDA and SCL
signals
output fall time
SMBus time-out time
power-on reset pulse time
SMBus AC characteristics
amb
= 40 C to +125 C; unless otherwise specified. These specifications are guaranteed by design.
Conditions
30 % of SDA to
70 % of SCL
from clock
LOW period to reset
SMBus
power supply falling
Rev. 01 — 5 March 2009
DDR memory module temp sensor, 1.7 V to 3.6 V
[1][4]
[1]
[2]
[3]
[5]
Standard mode
Min
300
200
250
4.7
4.7
4.7
0.5
25
4
4
0
4
-
-
-
-
1000
Max
100
100
300
35
-
-
-
-
-
-
-
-
-
-
-
IH(min)
of the SCL signal) to bridge the
0.25
Min
300
200
100
1.3
0.6
1.3
0.6
0.6
0.5
Fast mode
25
0
-
-
-
-
© NXP B.V. 2009. All rights reserved.
2
SE98A
C-bus from DC
Max
400
300
300
250
35
-
-
-
-
-
-
-
-
-
-
-
32 of 42
Unit
kHz
ns
ns
ns
ns
ns
ns
ns
ms
s
s
s
s
s
s
s