MCP8024 datasheet(26/46 Pages) MICROCHIP

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MCP8024

DS20005228A-page 26

 2013 Microchip Technology Inc.

TABLE 4-2:

DE2 COMMUNICATIONS COMMANDS TO MCP8024 FROM HOST

COMMAND

BYTE

BIT

VALUE

DESCRIPTION

SET_CFG_0

10000001

(81H) Set Configuration Register 0

Unused (Start-up Default)

Disable Disconnect of 30K Level Translator Pullup when CE = 0

(Default)

Enable Disconnect of 30K Level Translator Pullup when CE = 0

Unused

Reserved

Enable Undervoltage Lockout (Start-up Default)

Disable 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

STATUS_0

10000101

(85H) Get Status Register 0

STATUS_1

10000110

(86H) Get Status Register 1

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 = 0.991 Volts

40H = 1.872 Volts (40H * 0.1377mV/Bit + 0.991V) (Start-up Default)

FFH = 4.503 Volts (FFH * 0.1377mV/Bit + 0.991V)

GET_CFG_1

10000100

(84H) Get Configuration register 1

Get DAC Motor Current Limit reference voltage

SET_CFG_2

10000111

(87H) Set Configuration register 2

7:4

00H

Unused (Start-up Default)

3:2

---

Driver Dead Time (For PWMH /PWML inputs)

2 µs (Default)

1 µs

500 ns

250 ns

1:0

---

Driver Blanking Time (Ignore Switching Current Spikes)

4 µs (Start-up Default)

2 µs

1 µs

500 ns

GET_CFG_2

10001000

(88H) Get Configuration Register 2

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