P7/29

Rev. M, May 2010

ML5012

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◆ Function Description

1. Serial Interface Command

There are 5 commands for serial interface, STCH, PGA_AC, WR_AD, WR_OSC, RR_AC and RR_AD as shown the

below Command Code map.

Command Code Map

Command Code

R/W

C1

C2

C3

C4

Interface Command

Function Description

W

0

0

0

0

WR_STCH

STCH register.

Enable Oscillator for A/D, Select PGA input channel, Enable

MOSFET and Select A/D range

W

0

0

0

1

WR_PGA_AC

Set PGA Gain & write A/D configuration

W

0

0

1

0

WR_AD

Write data to A/D register

W

0

0

1

1

WR_SYS

SYS register.

Set AD conversion frequency, ADC startup time, Successive

AD mode, Reference voltage to AGND or (VR-AGND)/2

R

1

0

0

0

RR_STCH

Read STCH register value

R

1

0

0

1

RR_PGA_AC

Read PGA gain & A/D configuration

R

1

0

1

0

RR_AD

Read data from A/D register

R

1

0

1

1

RR_SYS

Read SYS register value