ES5129
4-1/2 digit with LCD
9
10
11
12
13
14
15
16
17
18
19
20
21
F2, E2, DP2
B3, C3, MINUS
A3, G3, D3
F3, E3, DP3
B4, C4, BC5
A4, G4, D4
F4, E4, DP4
BP3
BP2
BP1
VDISP
DP4/OR
DP3/UR
O
O
O
O
O
O
O
O
O
O
P
I/O
I/O
Output to LCD segment.
Output to LCD segment.
Output to LCD segment.
Output to LCD segment.
Output to LCD segment.
Output to LCD segment.
Output to LCD segment.
LCD backplane signal
LCD backplane signal
LCD backplane signal
Negative supply for display drivers.
Input: Turns on most significant decimal point when HI.
Output: Pulled HI when result count exceeds ±19,999.
Input: Turn on the 2
nd
significant decimal point when HI.
Output: Pulled HI when result count is less than ±1,000.
Input: when floating, ES5129 operates in the free-run
mode. When pulled high, the last display reading is held.
When pulled LO, the result counter contents are shown
incrementing during the de-integrate phase of cycle.
Output: Negative going edge occurs when the data latche
are upgraded. Can be used as a converter status signal.
Negative power supply terminal
Positive power supply terminal
Integrator amplifier input
Integrator amplifier output
Input: when LO, continuity flag on the display is off.
When HI, continuity flag is on.
Output: HI when voltage between inputs is less than
+200mV. LO when voltage between inputs is more than
+200mV.
Set common-mode voltage of 3.2V below V+.
Positive connection to external reference capacitor
Negative connection to external reference capacitor
Buffer amplifier output
Negative input voltage terminal
Positive input voltage terminal
Positive reference voltage terminal
Negative reference voltage terminal
Ground reference for digital section
Pulled HIGH externally for 2V scale.
When HI, decimal point 2 will be on.
When HI, decimal point 1 will be on.
Output of first clock inverter. Input of second clock
inverter.
22
LATCH/HOLD
I/O
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
V-
V+
CAZ
CINT
CONTINUITY
COMMON
CREF+
CREF-
BUFFER
IN_LO
IN_HI
REF_HI
REF_LO
DGND
RANGE
DP2
DP1
OSC2
P
P
I/O
I/O
I/O
O
I/O
I/O
O
I
I
I
I
O
I
I
I
I/O
3
07/03/01
CYRUSTEK [ Cyrustek corporation ]
