MAX1154BEUE+ Datasheet MAX1154BEUE+, MAX1153BEUE+, MAX1153BEUE+T | P16-P18

MAX1153/MAX1154

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

with Internal Temperature Sensor and V

Monitor

16 ______________________________________________________________________________________

Read Alarm Register

(Command Code 0001)

The Read Alarm Register command, 0001, outputs the

current status of the alarm register (see Table 11). The

address bits in this command are ignored. The alarm

illustrates the encoding of the alarm register.

After receiving an interrupt, read the alarm register to

determine the source of the interrupt (see the

Alarm

section).

Read Current Data Register for Selected

Channel (Command Code 0010)

The Read Current Data Register for Selected Channel

command, 0010, outputs the data in the current data

lowing this command select the input channel to be

read (see Table 3). The current data register is a 10-bit

Output Data Format

and

Current Data Registers

sec-

tions for more details. See Table 3 for channel address-

es. Also, see Figure 7.

Read Current Data Register for All

Channels (Command Code 0011)

The Read Current Data Registers for All Channels com-

mand, 0011, outputs the data in the current data regis-

ters of all 10 channels, starting with the internal

temperature sensor, then the V

monitor, followed by

AIN0 to AIN7. The address bits following this command

are ignored. It takes 20 bytes to read all of the 10 chan-

nels’ current data registers.

Read Configuration Register for Selected

Channel (Command Code 0100)

The Read Configuration Register for Selected Channel

command, 0100, outputs the configuration data of the

channel selected by the address bits (see Table 3).

The first register that shifts out is the upper threshold

ter (2 bytes), ending with the channel configuration reg-

ister (1 byte), all MSB first. It takes 5 bytes to read all

three registers. See the

Channel Registers

section for

more details.

SCLK

DIN

DOUT

C3 C2 C1 C0 A2 A1 A0

D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Figure 7. Serial Register Read Timing

MAX1153/MAX1154

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

with Internal Temperature Sensor and V

Monitor

______________________________________________________________________________________ 17

Read Global Configuration Register

(Command Code 0101)

The Read Global Configuration Register command,

0101, outputs the global configuration registers. The

address bits following this command are ignored. When

the MAX1153/MAX1154 receive a Read Global

Configuration Register command, they output 5 bytes

of data: 2 bytes from the channel enable register, 2

bytes from the input configuration register, and 1 byte

from the setup register, all MSB first. See the

Global

Configuration Registers

section for more details.

RESET (Command Code 0111)

The RESET command, 0111, resets the device. This

command returns the MAX1153/MAX1154 to their

power-on reset state, placing the device into shutdown

mode. The address bits in the command are ignored.

See the

Power-Up/Reset Defaults Summary

section for

more details.

Clear Channel Alarm for Selected Channel

(Command Code 1000)

The Clear Channel Alarm command, 1000, clears the

alarm bits in the alarm register and resets the fault

counter for the addressed channel. See the

Alarm

section for more details. See Table 3 for chan-

nel addresses.

Clear Alarm Register for All Channels

(Command Code 1001)

The Clear Alarm Register for All Channels command,

1001, clears the entire alarm register and resets the

fault counters for the internal TEMP sensor, the V

monitor, and the AIN0–AIN7 channels. The address bits

in the command are ignored. See the

Alarm Register

section for more details.

Write Current Data Register for Selected

Channel (Command Code 1010)

The Write Current Data Register for Selected Channel

command, 1010, writes to the addressed channel’s cur-

rent data register. This command sets an initial condi-

tion when using the averaging filter option (see the

Averaging

section). This command can also be used

for testing the thresholds, fault counters, and alarm

functions (see Figure 8). See Table 3 for channel

addresses.

Write Current Data Register for All

Channels (Command Code 1011)

The Write Current Data Register for All Channels com-

mand, 1011, writes to the current data registers of all

channels sequentially, starting with the internal temper-

ature sensor, then the V

monitor, followed by chan-

nels AIN0 to AIN7. The address bits are ignored. Use

this command for testing and setting initial conditions

when using the averaging filter option (see the

Averaging

section).

C3 C2 C1 C0 A2 A1 A0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

SCLK

DIN

DOUT

Figure 8. Serial Register Write Timing

MAX1153/MAX1154

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

with Internal Temperature Sensor and V

Monitor

18 ______________________________________________________________________________________

Write-Selected Channel Configuration

Registers (Command Code 1100)

The Write-Selected Channel Configuration Register com-

mand, 1100, writes to the three channel configuration

registers for the addressed channel (see Table 3). The

first register to be written is the upper threshold (2 bytes),

followed by the lower threshold (2 bytes), ending with the

channel configuration register (1 byte), all MSB first.

Writing to the configuration registers resets the alarm reg-

ister bits and the fault counters for the addressed chan-

nel. See the

Channel Registers

section for more details.

Write Global Configuration Registers

(Command Code 1101)

The Write Global Configuration Registers command,

1101, writes to three registers: the channel-enable reg-

ister (2 bytes), the input configuration register (2 bytes),

and the setup register (1 byte). The command address

bits are ignored. See the

Global Configuration

Registers

section for more details.

Global Configuration Registers

The global configuration registers consist of the chan-

nel-enable register, the input configuration register, and

the setup register. These registers hold configuration

data common to all channels.

Channel-Enable Register

The channel-enable register (Table 4) controls which

channels are converted while in automatic scan mode.

The register contents are ignored for manual conver-

sion commands. Each input channel has a correspond-

ing bit in the channel-enable register. A logic high

enables the corresponding analog input channel for

conversion, while a logic low disables it. In differential

configuration, the bits for odd channels are ignored. At

power-up and after a RESET command, the register

contents default to 111111111111b (all channels

enabled).

Input Configuration Register

The input configuration register (Table 5) stores the

configuration code for each channel as a 3-bit per

channel-pair code (see Table 6), selecting from five

input signal configurations: single-ended unipolar volt-

age, single-ended temperature, differential unipolar

voltage, differential bipolar voltage, and differential

temperature. Table 5 shows the input configuration reg-

ister format, and Table 6 shows the 3-bit encoding for

channel configuration. At power-up and after a RESET

command, the register contents defaults to

000000000000b (all inputs single ended).

Table 4. Channel-Enable Register Format

B11

(MSB)

B10B9B8B7B6B5B4B3B2B1

(LSB)

TEMP V

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 Res Res

Table 5. Input Configuration Register Format

B11

(MSB)

B10 B9 B8 B7 B6 B5 B4 B3 B2 B1

(LSB)

AIN0 and AIN1 configuration

AIN2 and AIN3 configuration AIN4 and AIN5 configuration

AIN6 and AIN7 configuration

Table 6. Channel Configuration Coding (3 Bits/Channel Pair)

CODE

AIN0, AIN2, AIN4, AIN6 CONFIGURATION AIN1, AIN3, AIN5, AIN7 CONFIGURATION

000 Single-ended input (power-up state) Single-ended input (power-up state)

001 Single-ended input Single-ended, external temperature sensor input

010 Single-ended, external temperature sensor input Single-ended input

011 Single-ended, external temperature sensor input Single-ended, external temperature sensor input

100 Differential unipolar encoded, positive input Differential unipolar encoded, negative input

101 Differential bipolar encoded, positive input Differential bipolar encoded, negative input

110

Differential external temperature sensor, positive input

Differential external temperature sensor, negative input

111 Reserved Reserved

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30

MAX1154BEUE+

Mfr. #:

Buy MAX1154BEUE+

Manufacturer:

Maxim Integrated

Description:

Analog to Digital Converters - ADC Stnd-Alne 10Ch 10Bit System Monitor

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

MAX1154BEUE+

MAX1154BEUE+

Products related to this Datasheet