DMM Analog front end with Inrush
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66-77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
OHMC4
CSH+
CSH-
NC
NC
R9K
R1K
LPC1
LPC2
LPC3
LPFOUT
NC
NC
NC
STBEEP
FREQ
NC
OSC2
OSC1
CS
IO_CTRL
BZOUT
TEST
DATA_NEW
SCLK
SDATA
C+
C-
LBAT
V-
V-
uPVCC
V+
V+
DGND
AGND
AGND
CH+
CH-
CIH
O
I/O
I/O
-
-
O
O
O
O
O
O
-
-
-
O
I
-
O
I
I
I
I
-
O
I
IO
O
O
I
P
P
P
O
O
G
G
G
IO
IO
O
Filter capacitor connection for resistance mode.
Capacitor connection for inrush mode
Capacitor connection for inrush mode
Not connected
Not connected
Connect
to a precise 9KΩ resister for capacitor measurement.
Connect to a precise 1KΩ resister for capacitor measurement.
Capacitor C1 connection for internal low-pass filter
Capacitor C2 connection for internal low-pass filter
Capacitor C3 connection for internal low-pass filter
Capacitor C1 connection for internal low-pass filter
Not connected
Not connected
Not connected
Fast low-impedance sensed output for CONT./Diode mode Build-in a
internal comparator for OVX pin.
Frequency counter input, offset V-/2 internally by the chip.
Not connected
Crystal oscillator output connection
Crystal oscillator input connection
Set to high to enable ES51970. Set to low to enter sleep mode
MPU I/O level LOW setting. Connect to DGND or V-.
Buzzer frequency output. Normal low state.
Test mode used. Not connected
New ADC data ready
Serial clock input
Serial data input/output
Positive capacitor connection for on-chip DC-DC converter.
Negative capacitor connection for on-chip DC-DC converter.
Low battery configuration input.
Negative supply voltage.
Negative supply voltage.
Switch 5 for function selection.
Output of on-chip DC-DC converter.
Output of on-chip DC-DC converter.
Digital ground.
Analog ground.
Analog ground.
Positive connection for reference capacitor of high-speed A/D.
Negative connection for reference capacitor of high-speed A/D.
High-speed integrator output. Connect to integral capacitor.
ES51970(6000counts)
ver. 2.8
4
12/01/12
CYRUSTEK [ Cyrustek corporation ]
