DS3501 Datasheet PDF - Maxim Integrated

DS3501 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

DS3501

High-Voltage, NV, I2C POT with Temp Sensor and Lookup Table

Maxim Integrated

DS3501 Datasheet PDF : 14 Pages

1 2 3 4 5 6 7 8 9 10 Next Last

High-Voltage, NV, I2C POT with Temp Sensor

and Lookup Table

LUT20

LUT19

LUT18

LUT17

LUT16

DECREASING

TEMPERATURE

INCREASING

TEMPERATURE

1°C HYSTERESIS

WINDOW

TEMPERATURE (°C)

falls on the boundary between two windows. As the

temperature increases, the LUT changes on even tem-

perature values (see Figure 1). Conversely, the LUT

changes on odd temperature values when the tempera-

ture is decreasing.

LUT Adder Mode

LUT Adder Mode is selected by setting the Update

Mode bit (CR1.0) to 1 and the Adder Mode bit (CR1.1)

to 1. This mode operates similar to LUT Mode with one

major difference (see the LUT Mode and LUT Adder

Mode Block Diagram). The Wiper Register is loaded

with the sum of LUTVAL and IVR. Furthermore, in this

mode, the values programmed into the LUT are signed

two’s complement. This allows convenient positive or

negative offsetting of the nominal IVR value.

Figure 1. LUT Hysteresis

DS3501 Control Registers

The DS3501 contains three control registers (CR0, CR1, and CR2) used to configure and control modes and features.

Control Register 0 (CR0)

POWER-UP DEFAULT

MEMORY TYPE

00h

Volatile

bit7

bit6:0

02h

SEE

bit7

Reserved Reserved Reserved Reserved Reserved Reserved

SEE: Controls functionality of shadowed NV registers (such as the WR/IVR register).

0 = Data written to shadowed NV memory is stored in both SRAM and EEPROM (default).

1 = Data written to shadowed NV memory is stored only in SRAM.

Reserved

bit0

Control Register 1 (CR1)

FACTORY DEFAULT

MEMORY TYPE

00h

Shadowed Nonvolatile

03h

Reserved

bit7

Reserved

Adder

Mode

Update

Mode

bit0

bit7:2

bit1

bit0

Reserved

Adder Mode: This bit is valid only if the Update Mode bit = 1.

0 = Sets the DS3501 to LUT Mode.

1 = Sets the DS3501 to LUT Adder Mode.

Update Mode:

0 = Sets the DS3501 to Default Mode. In this mode the DS3501 is compatible with the ISL95311 (default).

1 = Sets the DS3501 to one of the two LUT-based modes depending on the Adder Mode bit.

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