t6020m ATMEL Corporation, t6020m Datasheet - Page 14

• Manufacturer Part Number: t6020m
• Description: Low-current Microcontroller For Watchdog Function
• Manufacturer: ATMEL Corporation

2.4.1
VM2: Voltage monitor Mode bit 2
VM1: Voltage monitor Mode bit 1
VM0: Voltage monitor Mode bit 0
VIM Voltage Interrupt Mask bit
VMS Voltage Monitor Status bit
T6020M
VMC: Write
VMST: Read
14 (54)
VM2 VM1 VM0
1
1
1
1
0
0
0
0
VIM = 0, voltage monitor interrupt is enabled
VIM = 1, voltage monitor interrupt is disabled
VMS = 0, the voltage at the comparator input is below Vref
VMS = 1, the voltage at the comparator input is above Vref
1
1
0
0
1
1
0
0
Voltage Monitor Control / Status Register
1.25 V
5.0 V
4.0 V
V
VMI
VMS = 1
DD
1
0
1
0
1
0
1
0
Disable voltage monitor
External (VIM-input), internal reference threshold (1.25 V), interrupt with negative slope
Not allowed
External (VMI-input), internal reference threshold (1.25 V), interrupt with positive slope
Internal (supply voltage), high threshold (5.0 V), interrupt with negative slope
Not allowed
Internal (supply voltage), low threshold (4.0 V), interrupt with negative slope
Not allowed
Low threshold
High threshold
Negative slope
Positive slope
VMS = 1
VMS = 0
VM2
Bit 3
Figure 12. Internal supply voltage supervisor
–––
Figure 13. External input voltage supervisor
Internal reference level
VM1
Bit 2
–––
Interrupt positive slope
Interrupt negative slope
reserved
VM0
Bit 1
VMS = 1
VMS = 0
Function
Low threshold
High threshold
VMS
VIM
Bit 0
Primary register address: ’F’hex
VMS = 0
Reset value: xx11b
Reset value: 1111b
t
Rev. A3, 02-Apr-01
16530