Rainbow Electronics MAX6626 - Manual (Page 9)

MAX6625/MAX6626
9-Bit/12-Bit Temperature Sensors with
I
2
C-Compatible Serial Interface in a SOT23
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D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 0 0 0
Register select
(see Table 3)
Table 2. Pointer Register
D7 to D2: Will read all zeros, cannot be written.
PART D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2–D0
MAX6625
MSB
(Sign)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB 0 0 0 0 0
MAX6625
MSB
(Sign)
Bit
11
Bit
10
Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB 0
Table 4. Temperature Register
D7 D6 D5 D4 D3 D2 D1 D0
0 0 0
Fault
Queue
Depth
OT
Polarity
Comparator
or Interrupt
Mode
Shutdown
Table 5. Configuration Register
All defaults = 0.
D0: 0 = Normal operation, 1 = Shutdown.
D1: 0 = Comparator mode, 1 = Interrupt mode.
D2: 0 = Active low, 1 = Active high.
D7 to D5: Reserved locations, always write zeros.
D4 D3 NUMBER OF FAULTS
0 0 1 (Default)
0 1 2
1 0 4
1 1 6
Table 6. Fault Queue Depth
D1 D0 REGISTER
0 0 Temperature (Default)
0 1 Configuration
1 0 T LOW
1 1 T HIGH
Table 3. Register Select
D6 to D0, MAX6625: Will read all zeros, cannot be written.
D2 to D0, MAX6626: Will read all zeros, cannot be written.
D15: MSB is the sign bit. 1LSB = 0.5°C for the MAX6625.
1LSB = 0.0.0625°C for the MAX6626.
Temperature is stored in two’s-complement format.