ES51980 datasheet(9/29 Pages) CYRUSTEK

9 / 29 page

ver. 2.8

12/01/12

ES51980(6000counts)

DMM Analog front end with Inrush

The ID byte of ES51980 is header of “110010” followed by a buzzer on/off control bit and

R/W bit. The start/stop bit definition is shown on the diagram below.

1.2 Read/Write command description

The write command includes one ID byte with four command bytes. If the valid write ID

code is received by ES51980 at any time, the write command operation will be enabled.

The next table shows the content of write command.

Byte

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

BUZ

R/W=0

SHBP

FQ2

FQ1

FQ0

EXT

FS60

LPF1

LPF0

FRES

IRQ

INA/IRV

IRR

OP0

OP1

EXT_ADP

Auxiliary low-resistance detection control bit for Continuity and Diode modes: SHBP

Measurement function control bit: F3/F2/F1/F0

Range control bit for V/A/R/C modes: Q2/Q1/Q0

Range control bit for Freq mode: FQ2/FQ1/FQ0

Buzzer frequency selection: B2/B1/B0

Buzzer driver ON/OFF control bit: BUZ

ADC conversion rate control bit: C1/C0

AC mode control enable bit: AC

3dB BW for low-pass-filter selection: LPF1/LPF0

External source for Diode mode control bit: EXT

Inrush mode control bit: INA

OP configuration control bit: OP1/OP0

Frequency mode input resistance control bit: FRES

ADP mode control bit: EXT_ADP

ADP DC mode full scale control bit: FS60

Insulation mode control bit: IRQ/IRV/IRR

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