LM3554TMXSLASHNOPB datasheet(28/47 Pages) TI1

28 / 47 page

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

N/A

Bit 7

Bit 6

MSB

LSB

VIN Monitor Register

N/A

Enable

N/A

Threshold

VIN

Monitor

LM3554

SNVS549C – JUNE 2009 – REVISED FEBRUARY 2016

www.ti.com

Product Folder Links: LM3554

Submit Documentation Feedback

Table 8. GPIO Register Bit Settings

Bit 7 (Not

Used)

Bit 6 (NTC

External Flag)

Bit 5

(ENVM/TX2/GP

IO2 data)

Bit 4

(ENVM/TX2/GP

IO2 data

direction)

Bit 3

(ENVM/TX2/GP

IO2 Control)

Bit 2

(TX1/TORCH/G

PIO1 data)

Bit 1

(TX1/TORCH/G

PIO1 data

direction)

Bit 0

(TX1/TORCH/G

PIO1 Control)

Reads Back 1

0 = NTC

External Flag

mode is

disabled

(default)

This bit is the

read or write

data for the

ENVM/TX2/GPI

O2 pin in GPIO

mode (default

is 0)

0 =

ENVM/TX2/GPI

O2 is a GPIO

Input (default)

0 =

ENVM/TX2/GPI

O2 is

configured

according to

the

Configuration

(default)

This bit is the

read or write

data for the

TX1/TORCH/G

PIO1 pin in

GPIO mode

(default is 0)

0 =

TX1/TORCH/G

PIO1 is a GPIO

input (default)

0 =

TX1/TORCH/G

PIO1 pin is

configured as

an active low

reset input

(default)

1 = When

ENVM/TX2/GPI

O2 is

configured as a

GPIO output

the

ENVM/TX2/GPI

O2 pin pulls low

when the LED

Thermal Fault

Flag is set

1 =

ENVM/TX2/GPI

O2 is a GPIO

Output

1 =

ENVM/TX2/GPI

O2 is

configured as a

GPIO

1 =

TX!/TORCH/GP

IO1 is an

output

1 =

TX1/TORCH/G

PIO1 pin is

configured as a

GPIO

7.6.1.8 VIN Monitor Register

The VIN Monitor Register controls the on/off state of the VIN Monitor comparator as well as selects the 4

programmable thresholds. and Table 9 describe the bit settings of the VIN Monitor feature.

VIN Monitor Register Description

Table 9. VIN Monitor Register Bit Settings

Bit 7 (Not

used)

Bit 6 (Not

used)

Bit 5 (Not

used)

Bit 4 (Not

used)

Bit 3 (Not used)

Bit 2 (VIN

Threshold)

Bit 1 (VIN

Threshold)

Bit 0 (VIN

Monitor Enable)

Reads Back 1

Reads Back '0'

00 = 3.1-V threshold (VIN falling)

Default

01=3.2-V threshold (VIN falling)

10 = 3.3-V threshold (VIN falling)

11 = 3.4-V threshold (VIN falling)

0 = VIN

Monitoring

Comparator is

disabled

(default)

1 = VIN

Monitoring

Comparator is

enabled.

LM3554TMX/NOPB データシート(PDF) 28 Page - Texas Instruments

LM3554TMX/NOPB データシート(HTML) 28 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

データシートダウンロード

リンク URL

LM3554TMX/NOPB データシート(PDF) 28 Page - Texas Instruments

LM3554TMX/NOPB データシート(HTML) 28 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

データシート ダウンロード

リンク URL

データシートダウンロード