MAX6690MEE+ Maxim Integrated Products, MAX6690MEE+ Datasheet - Page 13

• Manufacturer Part Number: MAX6690MEE+
• Description: IC TEMP SENSOR SMBUS 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6690MEE+

• Function: Thermometer, Thermostat
• Topology: ADC, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -55°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Full Temp Accuracy: +/- 5 C
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The status byte register (Table 7) indicates which (if
any) temperature thresholds have been exceeded. This
byte also indicates whether the ADC is converting and
whether there is an open circuit in the remote-diode
DXP–DXN path. After POR, the normal state of all the
flag bits is zero, assuming none of the alarm conditions
are present. The status byte is cleared by any success-
ful read of the status byte, unless the fault persists.
Note that the ALERT interrupt latch is not automatically
cleared when the status flag bit indicating the ALERT is
Table 6. Configuration-Byte Bit Assignments
Table 5. Command-Byte Bit Assignments
REGISTER
7 (MSB)
WCRW
WLHO
WRHA
RCRA
WLLM
WRLN
RLHN
OSHT
RRTE
RRLS
RRET
RLTS
RRHI
RLET
WCA
2 to 0
RLLI
RCL
RSL
N/A
N/A
BIT
6
5
4
3
2°C Accurate Remote/Local Temperature
ADDRESS
______________________________________________________________________________________
RUN/STOP
0Ah
0Bh
0Ch
0Dh
0Eh
FEh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Fh
10h
11h
FFh
MASK1
NAME
PRCM
SPNP
RFU
ETA
Status Byte Functions
Sensor with SMBus Serial Interface
POR STATE
0000 0000
0000 0000
0000 0000
0000 0000
0000 0010
0111 1111
1100 1001
0111 1111
1100 1001
0000 0000
0000 0000
POR STATE
N/A
N/A
N/A
N/A
N/A
N/A
N/A
4D
9
0
0
0
0
0
0
Read Internal Temperature
Read External Temperature
Read Status Byte
Read Configuration Byte
Read Conversion Rate Byte
Read Internal High Limit
Read Internal Low Limit
Read External High Limit
Read External Low Limit
Write Configuration Byte
Write Conversion Rate Byte
Write Internal High Limit
Write Internal Low Limit
Write External High Limit
Write External Low Limit
One-Shot
Read External Extended Temperature
Read Internal Extended Temperature
Read Device ID
Read Device Revision
Masks ALERT interrupts if high.
Standby mode control bit; if high, standby mode is initiated.
If high, lower temperature range is extended from 0°C to -64°C.
If high, parasitic resistance cancellation mode is enabled.
—
Reserved.
cleared. The fault condition must be eliminated before
the ALERT can be cleared.
When reading the status byte, check for internal bus
collisions caused by asynchronous ADC timing, or else
disable the ADC prior to reading the status byte
(through the RUN/STOP bit in the configuration byte). In
one-shot mode, read the status byte only after the con-
version is complete, which is 150ms max after the one-
shot conversion is commanded.
FUNCTION
FUNCTION
13