Datasheet

AMC7812

SBAS513E –JANUARY 2011–REVISED SEPTEMBER 2013

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HYSTERESIS REGISTERS

The hysteresis registers define the hysteresis in the alarm detection of an individual alarm.

Hysteresis Register 0 (Read/Write, Address = 68h, Default = 0810h, 8 LSB)

This register contains the hysteresis values for CH0 and CH1.

MSB LSB

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8 BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

CH0- CH0- CH0- CH0- CH0- CH0- CH0- CH1- CH1- CH1- CH1- CH1- CH1- CH1-

0 0

HYS-6 HYS-5 HYS-4 HYS-3 HYS-2 HYS-1 HYS-0 HYS-6 HYS-5 HYS-4 HYS-3 HYS-2 HYS-1 HYS-0

Bits[14:8] CH0-HYS-n: Hysteresis of CH0, 1 LSB per step.

Bits[7:1] CH1-HYS-n: Hysteresis of CH1, 1 LSB per step.

Hysteresis Register 1 (Read/Write, Address = 69h, Default = 0810h, 8 LSB)

This register contains the hysteresis values for CH2 and CH3.

MSB LSB

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8 BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

CH2- CH2- CH2- CH2- CH2- CH2- CH2- CH3- CH3- CH3- CH3- CH3- CH3- CH3-

0 0

HYS-6 HYS-5 HYS-4 HYS-3 HYS-2 HYS-1 HYS-0 HYS-6 HYS-5 HYS-4 HYS-3 HYS-2 HYS-1 HYS-0

Bits[14:8] CH2-HYS-n: Hysteresis of CH2, 1 LSB per step.

Bits[7:1] CH3-HYS-n: Hysteresis of CH3, 1 LSB per step.

Hysteresis Register 2 (Read/Write, Address = 6Ah, Default = 2108h, 8°C)

This register contains the hysteresis values for D2, D1, and LT. The range is 0°C to +31°C.

MSB LSB

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8 BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

D2- D2- D2- D2- D2- D1- D1- D1- D1- D1- LT- LT- LT- LT- LT-

HYS-7 HYS-6 HYS-5 HYS-4 HYS-3 HYS-7 HYS-6 HYS-5 HYS-4 HYS-3 HYS-7 HYS-6 HYS-5 HYS-4 HYS-3

Bits[14:10] D2-HYS-n: Hysteresis of D2, 1°C per step. Note that bits D2-HYS-[2:0] are always '0'.

Bits[9:5] D1-HYS-n: Hysteresis of D1, 1°C per step. Note that bits D1-HYS-[2:0] are always '0'.

Bits[4:0] LT-HYS-n: Hysteresis of LT, 1°C per step. Note that bits LT-HYS-[2:0] are always '0'.

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