MCP9808
TCRIT – THYST
TUPPER – THYST
TCRIT
TUPPER – THYST
TUPPER
TA
TLOWER – THYST
TLOWER
TLOWER – THYST
Comparator
Interrupt
S/w Int. Clear
Critical Only
Comparator
Interrupt
S/w Int. Clear
Critical Only
Notes: 1
2
1
3
4
3 5 6
7
4
2
Comparator Interrupt
Critical
TA Bits
14
Alert Output Boundary
Conditions
Notes
Alert Output (Active-Low/High)
15
13
1
2
3
4
5
6
TA ≥ TLOWER
High/Low
Low/High
Low/High
High/Low
Low/High
Low/High
Low/High
Low/High
Low/High
Low/High
High/Low
High/Low
High/Low
High/Low
Low/High
0
0
0
0
1
0
0
1
0
1
0
1
0
0
0
TA < TLOWER – THYST
TA > TUPPER
TA ≤ TUPPER – THYST
TA ≥ TCRIT
When TA ≥ TCRIT, the Alert output is forced to Comparator mode and the CONFIG<0> (Alert Output
Mode bit) is ignored until TA < TCRIT – THYST. In the Interrupt mode, if the interrupt is not cleared
(bit 5 of CONFIG), as shown in the diagram at Note 6, then Alert will remain asserted at Note 7
until the interrupt is cleared by the controller.
7
TA < TCRIT – THYST
Low/High
High/Low
High/Low
0
1
0
FIGURE 5-10:
Alert Output Conditions.
DS25095A-page 32
© 2011 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
