T48C862-R4 datasheet(23/107 Pages) ATMEL

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T48C862-R4 [Preliminary]

4551C–4BMCU–01/04

Figure 17.

Voltage Monitor

Control/Status Register

Primary register address: "F"hex

VM2:

oltage monitor Mode bit 2

VM1:

oltage monitor Mode bit 1

VM0:

oltage monitor Mode bit 0

Table 3.

Voltage Monitor Modes

VIM

oltage Interrupt Mask bit

VIM = 0, voltage monitor interrupt is enabled

VIM = 1, voltage monitor interrupt is disabled

VMS

oltage Monitor Status bit

VMS = 0, the voltage at the comparator input is below V

Ref

VMS = 1, the voltage at the comparator input is above V

Ref

VM2

Voltage monitor

VM1

VM0

VIM

VMS

res

OUT

BP41/

VMI

INT7

VMC :

VMST :

Bit 3

Bit 2

Bit 1

Bit 0

VMC: Write

VM2

VM1

VM0

VIM

Reset value: 1111b

VMST: Read

–

Reserved

VMS

Reset value: xx11b

VM2

VM1

VM0

Function

Disable voltage monitor

110

External (VIM input), internal reference threshold (1.3 V), interrupt

with negative slope

101

Not allowed

100

External (VMI input), internal reference threshold (1.3 V), interrupt

with positive slope

011

Internal (supply voltage), high threshold (3.0 V), interrupt with

negative slope

010

Internal (supply voltage), middle threshold (2.6 V), interrupt with

negative slope

001

Internal (supply voltage), low threshold (2.2 V), interrupt with

negative slope

000

Not allowed

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