MAX1153_10 datasheet(15/30 Pages) MAXIM

15 / 30 page

Stand-Alone, 10-Channel, 10-Bit System Monitors

with Internal Temperature Sensor and VDD Monitor

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Manually Triggered Conversion

(Command Code = 0000)

Before beginning a manual conversion, ensure the

scan mode bit in the setup register is zero, because a

logic 1 disables manual conversions. The address bits

in a Manually Triggered Conversion command select

the input channel for conversion (see Table 3). When

performing a differential conversion, use the even chan-

nel address (AIN0, AIN2, AIN4, AIN6); the command is

ignored if odd channel addresses (AIN1, AIN3, AIN5,

AIN7) are used for a differential conversion.

After issuing a Manually Triggered Conversion com-

mand, bring CS high to begin the conversion. To obtain

a correct conversion result, CS must remain high for a

period longer than the reference power-up time (if in

power-down mode) plus the conversion time for the

selected channel-configured conversion type (voltage

or temperature). The conversion’s result can then be

read at DOUT by issuing a Read Current Data Register

for Selected Channel command, addressing the con-

verted channel. See Table 3 for channel addresses.

Table 2. Command Description

DATA BYTES AFTER

COMMAND WORD

COMMAND

WORD

BYTES TO

DIN

BYTES FROM

DOUT

COMMAND DESCRIPTION

0000####

Manually Triggered Conversion

0001xxxx

Read Alarm Register

0010####

Read Current Data Register for Selected Channel

0011####

Read Current Data Register for All Channels

0100####

Read Configuration Register for Selected Channel

0101xxxx

Read Global Configuration Registers

0110xxxx

N/A

Reserved

0111xxxx

Reset

1000####

Clear Alarm/Fault for Selected Channels

1001xxxx

Clear Alarm/Fault for All Channels

1010####

Write Current Data Register for Selected Channel

1011xxxx

Write Current Data Registers for All Channels

1100####

Write Configuration Registers for Selected Channel

1101xxxx

Write Global Configuration Registers

1110xxxx

N/A

Reserved

1111xxxx

N/A

Reserved

#### = Channel address code, see Table 3.

xxxx = These bits are ignored for this command.

Table 3. Channel Address

ADDRESS IN COMMAND

INPUT

0000

Internal temperature

0001

VDD

0010

AIN0

0011

AIN1

0100

AIN2

0101

AIN3

0110

AIN4

0111

AIN5

1000

AIN6

1001

AIN7

1010

Reserved

1011

Reserved

1100

Reserved

1101

Reserved

1110

Reserved

1111

Reserved

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