SMD1108 Datasheet, PDF (17/29 Pages) Summit Microelectronics, Inc. – 8-Channel Auto-Monitor ADC In System Programmable Analog (ISPA) Device

SMD1108
Preliminary
Register 8B controls the source for the ADC’s reference,
optional over-current trip values, and channel 3 vs. temp.
sense enable.
7
6
V_REF SOURCE
x
x
0
0
0
1
1
0
1
1
5
4
Reserved
x
x
0
0
x
x
x
x
x
x
x
x
x
3
2
1
0 Bits
T S NVFL OC
x
x
x
0
1
V_REF
Function
0
V_REF = 2.048V
1
V_REF = 2.500V
x Over-current trip = 25mV
x Over-current trip = 50mV
0
x
x Disable non-volatile fault latch
1
x
x Enable non-volatile fault latch
0
x
x
x Disable temp sensor
1
x
x
x Enable temp sensor (vs. Channel 3)
x
x
x
x Reserved function. Set to 0.
x
x
x
x Reserved function. Set to 0.
x
x
x
x Use internally generated V_REF
x
x
x
x Reserved
x
x
x
x Reserved
x
x
x
x
Use V_REF input
Table 17. Register 8B Configuration
2052 Table17
7
6
PRT1 PRT0
x
x
0
0
0
1
1
0
1
1
5
4
3
2
1
0 Bits
LD2 LD1 LD0 WD2 WD1 WD0
Function
0
x
x Watch dog timer disabled
1
0
0 400ms Watch dog timer interval
x
x
x
1
0
1 800ms Watch dog timer interval
1
1
0 1600ms Watch dog timer interval
1
1
1 3200ms Watch dog timer interval
0
x
x
x
x
x Long dog timer disabled
1
0
0
x
x
x 800ms Long dog timer interval
1
0
1
x
x
x 1600ms Long dog timer interval
1
1
0
x
x
x 3200ms Long dog timer interval
1
1
1
x
x
x 6400ms Long dog timer interval
x
x
x
x
x
x 25ms Reset interval
x
x
x
x
x
x 50ms Reset interval
x
x
x
x
x
x 100ms Reset interval
x
x
x
x
x
x 200ms Reset interval
Table 18. Register 8C Reset Pulse Width and Timer Delays
2052 Table18 2.0
SUMMIT MICROELECTRONICS, Inc.
2052 2.0 10/05/01
17