MAX1617AMEE-T Maxim Integrated Products, MAX1617AMEE-T Datasheet - Page 14

• Manufacturer Part Number: MAX1617AMEE-T
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of MAX1617AMEE-T

• Full Temp Accuracy: +/- 3 C
• Package / Case: QSOP-16
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 7 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The address pin states are checked at POR and SPOR
only, and the address data stays latched to reduce qui-
escent supply current due to the bias current needed
for high-Z state detection.
The MAX1617A also responds to the SMBus Alert
Response slave address (see the Alert Response
Address section).
The MAX1617A has a volatile memory. To prevent ambig-
uous power-supply conditions from corrupting the data in
memory and causing erratic behavior, a POR voltage
detector monitors V
below 1.7V (typical, see Electrical Characteristics table).
When power is first applied and V
(typical), the logic blocks begin operating, although reads
and writes at V
A second V
prevents the ADC from converting until there is sufficient
headroom (V
The SPOR software POR command can force a power-on
reset of the MAX1617A registers via the serial interface.
Use the SEND BYTE protocol with COMMAND = FCh.
This is most commonly used to reconfigure the slave
address of the MAX1617A “on the fly,” where external
hardware has forced new states at the ADD0 and ADD1
address pins prior to the software POR. The new address
takes effect less than 100µs after the SPOR transmission
stop condition.
Remote/Local Temperature Sensor
with SMBus Serial Interface
Table 8. RLTS and RRTE Temp Register Update Timing Chart
14
OPERATING MODE
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Auto-Convert
Hardware Standby
Software Standby
Software Standby
______________________________________________________________________________________
CC
CC
CC
comparator, the ADC UVLO comparator,
= 2.8V typical).
levels below 3V are not recommended.
CC
and clears the memory if V
Power-on reset
1-shot command, while idling
between automatic conversions
1-shot command that occurs
during a conversion
Rate timer
Rate timer
Rate timer
Rate timer
Rate timer
Rate timer
Rate timer
Rate timer
STBY pin
RUN/STOP bit
1-shot command
CONVERSION INITIATED BY:
CC
POR and UVLO
rises above 1.75V
CC
falls
n/a (0.25Hz)
n/a
n/a
0.0625Hz
0.125Hz
0.25Hz
0.5Hz
1Hz
2Hz
4Hz
8Hz
n/a
n/a
n/a
(CHANGED VIA WRITE TO
NEW CONVERSION RATE
Power-Up Defaults:
Table 9. Slave Address Decoding (ADD0
and ADD1)
Note: High-Z means that the pin is left unconnected and floating.
Interrupt latch is cleared.
Address select pins are sampled.
ADC begins auto-converting at a 0.25Hz rate.
Command byte is set to 00h to facilitate quick
remote Receive Byte queries.
T
limits, respectively.
HIGH
High-Z
High-Z
High-Z
ADD0
WCRW)
GND
GND
GND
V
V
V
CC
CC
CC
and T
LOW
registers are set to max and min
High-Z
High-Z
High-Z
ADD1
GND
GND
GND
V
V
V
CC
CC
CC
TIME UNTIL RLTS AND RRTE
156ms max
156ms max
When current conversion is
complete (1-shot is ignored)
20sec
10sec
5sec
2.5sec
1.25sec
625ms
312.5ms
237.5ms
156ms
156ms
156ms
ARE UPDATED
ADDRESS
0011 000
0011 001
0011 010
0101 001
0101 010
0101 011
1001 100
1001 101
1001 110