ES51969
6,600 Counts Auto DMM
46
APOSEL
47 - 63 SEG17 – SEG01
64
BP4
65
BP3
66
BP2
67
BP1
68
ANNUNC
Auto power off idle time selection.
LCD segment line 01 – 17
LCD backplane 4
LCD backplane 3
LCD backplane 2
LCD backplane 1
Square wave output at the backplane frequency, synchronized to BP1.
ANNUNC can be used to control display annunciator. Connect a LCD
segment to ANNUNC to turn it on; connect an LCD segment to its
backplane to turn it off.
O Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer
when BUZIN is low.
O OL/UL state indicator in
ADP
modes. Origin state is low(V-), it goes to
high(DGND) only when the reading is over 6,600 counts. It comes
back to low only when the reading is less than 600 counts. It will keep
the state when the reading is between 600 and 6600 counts.
I
Pull to V- to enable the BUZOUT.
I
Pulse to V- to enable ZERO function.
I
Pull to V- to enable the INRUSH function.
I
Pull to V- to allow protection resistance increasing at OVH path
O If BKLIT function is enabled, this pin will change from –3V to +3V
for 60 sec, once press BKLIT pin again within 60 sec, this pin will
change back to –3V.
I
Crystal oscillator input connection
O Crystal oscillator output connection
I
Set to V- to enable the auto range voltage mode to start from 660.0V
range.
I
Pulse to V- to enable MAX/MIN function.
I
Pulse to V- to enable VAHZ mode.
I
Pulse to V- to enable Relative function.
I
Pulse to V- to enable HOLD function.
I
Pulse to V- to enable manual mode and manual range selection.
I
CE selection feature control pin.
I
Set to V- to change the backligh idle time from 60 sec. to 180 sec.
I
Pulse to V- to change mode. In ADP mode, if this pin is connected to
V-, the buzzer output will be off when the ADP input overflows.
In ACA modes for Clampmeter (FC5=low), pulse low to V- could
enable Inrush function.
I
Select initial state. Please refer to page 14
I
Switch 5 for function selection.
I
Switch 4 for function selection.
I
Switch 3 for function selection.
I
Switch 2 for function selection.
I
Switch 1 for function selection.
I
Low battery configuration. If 3V battery is used, connect it to AGND.
The default low-battery threshold voltage is –2.3V. If 9V battery is
used, the low battery annunciator is displayed when the voltage of
this pin is less than VRH (-1.2V)
O RS232 compliant serial data output.
O Positive capacitor connection for on-chip DC-DC converter.
O Negative capacitor connection for on-chip DC-DC converter.
P Negative supply voltage. Connecting to battery negative terminal.
P/G Digital ground. Connecting to battery positive terminal.
P/G Analog ground.
I
O
O
O
O
O
O
69
70
BUZOUT
OR
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
BUZIN
ZERO
ENIR
R_OVH
BKOUT
OSC1
OSC2
VST
MAXMIN
VAHZ
REL
HOLD
RANGE
CESEL
BKSET
KEY
87
88
89
90
91
92
93
SLACDC
FC5
FC4
FC3
FC2
FC1
LBAT9
94
95
96
97
98
99 - 100
SDO
C+
C-
V-
DGND
AGND
v2.6
4
08/10/06
CYRUSTEK [ Cyrustek corporation ]
