Ver: 2.2

Nov 07 2001

TEL: 886-3-5788833

http://www.gmt.com.tw

7

G751

Global Mixed-mode Technology Inc.

Pointer Register

(Selects which registers will be read from or written to):

P7

P6

P5

P4

P3

P2

P1

P0

0

0

0

0

0

0

Register Select

P0-P1 :Register Select:

P1

P0

REGISTER

0

0

Temperature (Read only) (Power-up default)

0

1

Configuration (Read/Write)

1

0

1

1

P2-P7 :Must be kept zero.

Temperature Register

(Read Only):

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

MSB

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

X

X

X

X

X

X

X

D0-D6 :Undefined

D7-D15 :Temperature Data. One LSB = 0.5°C. Two’s complement format.

Configuration Register

(Read/Write):

D7

D6

D5

D4

D3

D2

D1

D0

0

0

0

Fault Queue

O.S. Polarity

Cmp/Int

Shutdown

Power up default is with all bits “0” (zero).

D0 :Shutdown : When set to 1 the G751 goes to low power shutdown mode.

D1 :Comparator / Interrupt mode : 0 is Comparator mode, 1 is Interrupt mode.

D2 :O.S. Polarity : 0 is active low, 1 is active high. O.S. is an open-drain output under all conditions.

D3-D4 :Fault Queue : Number of faults necessary to detect before setting O.S. output to avoid false tripping due

to noise :

D4

D3

NUMBER OF FAULTS

0

0

1 (Power-up default)

0

1

2

1

0

4

1

1

6

D5-D7 :These bits are used for production testing and must be kept zero for normal operation.

(Read/Write):

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

MSB

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

X

X

X

X

X

X

X

D0-D6 :Undefined

45°C /75°C for G751-1/G751-2.