ATAR092 datasheet(13/107 Pages) ATMEL

13 / 107 page

4535E–4BMCU–05/07

ATAR092/ATAR892

Figure 4-9.

Voltage Monitor

4.4.1

Voltage Monitor Control/Status Register

VM2: Voltage monitor Mode bit 2

VM1: Voltage monitor Mode bit 1

VM0: Voltage monitor Mode bit 0

INT7

Voltage Monitor

OUT

VM2

VMC

VM1

BP41/

VMI

VDD

VM0 VIM

res

VMS

VMST

Primary register address: ’F’hex

Bit 3

Bit 2

Bit 1

Bit 0

VMC: Write

VM2

VM1

VM0

VIM

Reset value: 1111b

VMST: Read

–

reserved

VMS

Reset value: xx11b

Table 4-3.

Voltage Monitor Modes

VM2

VM1

VM0

Function

Disable voltage monitor

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

with negative slope

Not allowed

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

with positive slope

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

negative slope

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

negative slope

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

negative slope

Not allowed

ATAR092 데이터시트(PDF) 13 Page - ATMEL Corporation

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