Rainbow-electronics MAX6635 Manual do Utilizador descarregar pdf (Página 13)

MAX6633/MAX6634/MAX6635

12-Bit Plus Sign Temperature Sensors with

SMBus/I

C-Compatible Serial Interface

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ADDRESS DESCRIPTION POR STATE

00h

Temperature register

(READ only)

0000h

01h

Configuration-Byte

00h

02h T

HYST

03h T

MAX

04h T

LOW

05h T

HIGH

Table 2. Pointer Register Bit

Assignments

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

MSB

(Sign)

Bit

Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 T

MAX

HIGH

LOW

Table 3. Temperature Register

D7 D6 D5 D4 D3 D2 D1 D0

SMB Timeout

Disable

Fault Queue

Enable

ALERT

Polarity

OVERT

Polarity

Comparator

or Interrupt

Shutdown

Table 4. Configuration Register

D15: MSB is the first sign bit.

D2, D1, D0: Flag bits for T

MAX

, T

HIGH

, T

LOW

1LSB = 0.0625°C.

Temperature is stored in two’s complement format.

Power-on default = 0h.

D0: 0 = normal operation; 1 = shutdown.

D1: 0 = comparator mode; 1 = interrupt mode.

D2 to D3: 0 = active low; 1 = active high.

D5: 0 = normal SMBus operation; 1 = full I

C compatibility.

D7 to D6: Reserved locations, always write zeros.

1 2 ... 8 9 10 11 12 13 14 15 16

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