This page gives an overview of the various Cyrustek ES519xx DMM ICs, and especially their protocol specifics.
Overview
| Device
|
Counts
|
Serial
|
#Bytes
|
#Digits
|
| ES51922
|
22000
|
19230/7o1
|
14
|
5
|
| ES51978
|
4000
|
2400/7o1
|
11
|
4
|
| ES51986
|
6000
|
19230/7o1
|
11
|
4
|
STATUS byte
| STATUS bits
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| ES51922
|
0
|
1
|
1
|
Judge
|
Sign
|
BATT
|
OL
|
| ES51978
|
0
|
1
|
1
|
Judge
|
Sign
|
BATT
|
OL
|
| ES51986
|
0
|
1
|
1
|
Judge
|
Sign
|
BATT
|
OL
|
OPTION1 byte
| OPTION1 bits
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| ES51922
|
0
|
1
|
1
|
MAX
|
MIN
|
REL
|
RMR
|
| ES51978
|
0
|
1
|
1
|
0
|
0
|
0
|
VAHZ
|
| ES51986
|
0
|
1
|
1
|
HOLD
|
MAX
|
MIN
|
0
|
OPTION2 byte
| OPTION2 bits
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| ES51922
|
0
|
1
|
1
|
UL
|
PMAX
|
PMIN
|
0
|
| ES51978
|
0
|
1
|
1
|
DC
|
AC
|
AUTO
|
APO
|
| ES51986
|
0
|
1
|
1
|
DC
|
AC
|
AUTO
|
0
|
OPTION3 byte
| OPTION3 bits
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| ES51922
|
0
|
1
|
1
|
DC
|
AC
|
AUTO
|
VAHZ
|
| ES51978
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
| ES51986
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
OPTION4 byte
| OPTION4 bits
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| ES51922
|
0
|
1
|
1
|
0
|
VBAR
|
HOLD
|
LPF
|
| ES51978
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
| ES51986
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|