MAX1254AEUE+ Maxim Integrated, MAX1254AEUE+ Datasheet - Page 16

• Manufacturer Part Number: MAX1254AEUE+
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1254AEUE+

• Number Of Channels: 10
• Architecture: SAR
• Conversion Rate: 94 KSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Interface Type: Serial
• Operating Supply Voltage: 4.5 V to 5.5 V
• Number Of Converters: 1
• Voltage Reference: Internal 4.096 V or External

Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and V
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
register is 24 bits long and outputs in 3 bytes. Table 12
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
Register section).
The Read Current Data Register for Selected Channel
command, 0010, outputs the data in the current data
register of the selected channel. The address bits fol-
lowing this command select the input channel to be
read (see Table 3). The current data register is a 12-bit
register. It takes 2 bytes to read its value. See the
Output Data Format and Current Data Registers sec-
tions for more details. See Table 3 for channel address-
es. Also, see Figure 7.
Figure 7. Serial Register Read Timing
16
DOUT
SCLK
Read Current Data Register for Selected
DIN
CS
______________________________________________________________________________________
Channel (Command Code 0010)
C3
C2 C1 C0
(Command Code 0001)
Read Alarm Register
A3
A2
A1 A0
D11
D10
D9
D8 D7
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
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.
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
register (2 bytes), followed by the lower threshold regis-
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.
Read Configuration Register for Selected
D6
D5
Read Current Data Register for All
D4
Channels (Command Code 0011)
Channel (Command Code 0100)
D3
D2
D1
DD
D0
DD
monitor, followed by
Monitor