FAH4820 Ver la hoja de datos (PDF) - Fairchild Semiconductor

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FAH4820

Direct Driver for DC Motors (ERMs)

Fairchild Semiconductor 

Register Definitions

Table 1. Control Registers and Default Values

Address

Register Name

0x20

CONTROL0

0x21

CONTROL1

0x22

STAT

Type

R/W

R/W

R

Reset Value

10010000

00101100

00001110

Table 2. Control Register MAP (Control0, Control1, Status)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

En

ODRV_EN ODRVEN_HL

Reserved

Input Resistance[7:5]

VLDO_OUT

Reserved[7:4]

VDD_G VREG_G

Notes:

3. Connect the bottom DAP to ground.

Table 3. Control 0

 Address: 20h

 Reset Value: 1001_0000

 Type: Read/Write

 BOLD is default state

Bit # Name Size (Bits)

Description

7

En

Drive Enable Mode

1

0: Power-Down Mode

1: Normal Operation Mode

6

ODRV_EN

Over-Drive Enable Mode

1

0: Disable Over Drive

1: Enable Over Drive

Selection of Over-Drive

5 ODRVEN_HL

1

0: Over-Drive LOW (MDN to VDD RAIL)

1: Over-Drive HIGH (MDP TO VDD RAIL)

4

Reserved

1

Not used

3:2 Reserved

2

Not used

1:0 Reserved

2

Not used

Bit1

Bit0

Reserved

OT

Reserved

© 2013 Fairchild Semiconductor Corporation

FAH4820 • 1.0.0

8

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