SS8017TR SSC [Silicon Standard Corp.], SS8017TR Datasheet - Page 2

• Manufacturer Part Number: SS8017TR
• Description: Two Remote Temperature Sensors with SMBus Serial Interface and System Reset
• Manufacturer: SSC [Silicon Standard Corp.]

Rev.2.01 6/06/2003
The SS8017 also contains a microprocessor ( µP)su-
pervisory circuit used to monitor the power supplies in
µP and digital systems. This provides excellent circuit
reliability and low cost by eliminating external compo-
nents and adjustments when used with 5V-powered
circuits. This circuit asserts a reset signal whenever
the V
old, keeping it asserted for at least 140ms after V
has risen above the reset threshold. The SS8017 has
an active-low RESET output. The reset comparator is
designed to ignore fast transients on V
threshold of this circuit is set to 4.38V.
When the temperature of DX1 reaches or exceeds the
Tcrit1 (SMBus 35h) threshold consecutively for the
Typical Operating Circuit
CC
supply voltage declines below a preset thresh-
2N3904
2N3904
2N3904
2N3904
RESET
RESET
µP
µP
0.1µF
0.1µF
2200pF
2200pF
2200pF
2200pF
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GND
GND
DXP1
DXP1
DXP2
DXP2
RESET
RESET
Vcc
Vcc
DXN
DXN
CC
. Reset
SS8017
CC
SMBDATA
SMBDATA
TH_SHUT
TH_SHUT
SMBCLK
SMBCLK
ALERT
ALERT
number of times equal to the number of faults of the
FQ_TH_SHUT registers, TH_SHUT pin becomes logic
high. The same mechanism is duplicated for DX2.
Therefore, if either DX1 or DX2 continuously exceeds
their respective Tcrit, the TH_SHUT will a ssert logic
high to indicate a thermal shutdown event.
The SS8017’s SMBus device address is fixed to be
7Ah for write and 7Bh for read.
The SS8017 is available in a small, 16-pin SSOP sur-
face-mount package.
Vcc
Vcc
0.1µF
0.1µF
10k EACH
10k EACH
INTERRUPT TO µC
INTERRUPT TO µC
SMBCLK
SMBCLK
SMBDATA
SMBDATA
SS8017
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