ES51932
22,000 Counts Auto DMM
5.3 Programmable LCD Segment Display
ES51932 supports a “Programmable LCD Segment Display”(PLSD) feature. Except
peak hold measurement, capacitor measurement mode & duty cycle measurement, all
modes could support PLSD. PLSD allows the meter designer to process or modify
the conversion results by external microprocessor and displayed on LCD panel. The
more accurate and stable reading would be possible. ES51932 provides uPLCD,
SCLK and SDATA pins to archive the PLSD feature. Connect uPLCD to V- to enable
PLSD feature and received the serial data from SDO pin. After the data processing,
transfer the display data through the SDATA and give a clock signal to SCLK.
ES51932 will receive the display data through SDATA at the falling edge of clock
signal, then display the data on LCD panel. Only the segments shown below could be
modified, other segments are still controlled by ES51932. When peak hold, capacitor
or duty mode is selected, the LCD display is determined by ES51932.
About the details of serial data format, please refer to page 21-25.
D5
a
D4
a
D3
a
D2
a
D1
a
ADP0
ADP1
ADP2
f
b
c
f
b
c
f
b
c
f
b
c
f
b
c
g
g
g
g
g
Lsign
e
e
e
e
DP2
B7
e
ADP3
ADP4
d
d
d
d
d
DP4
DP3
DP1
PLSD Data format:
B1
B2
B3
B4
B5
B6
B8
B9
B10
B11
B12
OL ADP0 ADP1 ADP2 ADP3 ADP4 D1a D1b D1c D1d D1e D1f
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
D1g DP1 D2a D2b D2c D2d D2e D2f D2g DP2 D3a D3b
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
D3c D3d D3e D3f D3g DP3 D4a D4b D4c D4d D4e D4f
B37
B38
B39
B40
B41
B42
B43
B44
B45
B46
D4g DP4 D5a D5b D5c D5d D5e D5f D5g Lsign
Note: The B1 should be sent first and the last is B46.
Set the OL bit = 1, the buzzer output will be active for 3.3beep/sec in voltage &
current mode (or peak mode). And if auto range is available, it will change to higher
range if LCD bar44 is active also.
Ver. 1.2
28
10/05/27
CYRUSTEK [ Cyrustek corporation ]
