MAX1617MEE-T Maxim Integrated Products, MAX1617MEE-T Datasheet - Page 14

• Manufacturer Part Number: MAX1617MEE-T
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of MAX1617MEE-T

• Full Temp Accuracy: +/- 3.5 C, +/- 5 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 MAX1617 appears to the SMBus as one device
having a common address for both ADC channels. The
device address can be set to one of nine different val-
ues by pin-strapping ADD0 and ADD1 so that more
than one MAX1617 can reside on the same bus without
address conflicts (Table 9).
The address pin states are checked at POR only, and
the address data stays latched to reduce quiescent
supply current due to the bias current needed for high-Z
state detection.
The MAX1617 also responds to the SMBus Alert
Response slave address (see the Alert Response
Address section).
The MAX1617 has a volatile memory. To prevent ambigu-
ous 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
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
Slave Addresses
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