MCP8026 datasheet(40/64 Pages) MICROCHIP

40 / 64 page

MCP8025/6

DS20005339B-page 40

 2016 Microchip Technology Inc.

TABLE 4-7:

DE2 COMMUNICATION COMMANDS TO MCP8025/6 FROM HOST

Command

Byte

Bit

Value

Description

SET_CFG_0

10000001b

(81H) Set Configuration Register 0

Reserved

—

(Always ‘0’ in Sleep mode)

Enable Disconnect of 30 k

 LIN Bus/Level Translator Pull Up when

CE = 0 (Default)

Disable Disconnect of 30 k

 LIN Bus/Level Translator Pull Up when

CE = 0

System Enters Standby Mode when CE = 0

System Enters Sleep Mode when CE = 0, 30 k

 LIN Bus/Level

Translator Pull Up Disconnect always enabled

Disable Internal Neutral Simulator (Start-Up Default)

Enable Internal Neutral Simulator

Enable MOSFET Undervoltage Lockout (Start-Up Default)

Disable MOSFET Undervoltage Lockout

Enable External MOSFET Short-Circuit Detection (Start-Up Default)

Disable External MOSFET Short-Circuit Detection

1:0

Set External MOSFET Overcurrent Limit to 0.250V (Start-Up Default)

Set External MOSFET Overcurrent Limit to 0.500V

Set External MOSFET Overcurrent Limit to 0.750V

Set External MOSFET Overcurrent Limit to 1.000V

GET_CFG_0

10000010

(82H)

Get Configuration Register 0

SET_CFG_1

10000011

(83H)

Set Configuration Register 1

DAC Motor Current Limit Reference Voltage

7:0

00H – FFH

Select DAC Current Reference value

(4.503V – 0.991V)/255 = 13.77 mV/bit

00H = 0.991V

40H = 1.872V (40H x 0.1377 mV/bit + 0.991V) (Start-Up Default)

FFH = 4.503V (FFH x 0.1377 mV/bit + 0.991V)

GET_CFG_1

10000100

(84H)

Get Configuration Register 1

Get DAC Motor Current Limit Reference Voltage

STATUS_0

10000101

(85H)

Get Status Register 0

STATUS_1

10000110

(86H)

Get Status Register 1

SET_CFG_2

10000111

(87H)

Set Configuration register 2

27:5

00H

Reserved

4:2

—

Driver Dead Time (for PWMH/PWML inputs)

000

2000 ns (Default)

001

1750 ns

010

1500 ns

011

1250 ns

100

1000 ns

101

750 ns

110

500 ns

111

250 ns

1:0

—

Driver Blanking Time (Ignore Switching Current Spikes)

4 µs (Default)

2µs

1µs

500 ns

GET_CFG_2

10001000

(88H)

Get Configuration Register 2

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