ES51967
6,600 Counts Auto DMM
46
APOSEL
I
Auto power off idle time selection.
47 - 63 SEG17 – SEG01
O
O
O
O
O
O
LCD segment line 01 – 17
LCD backplane 4
LCD backplane 3
LCD backplane 2
64
65
66
67
68
BP4
BP3
BP2
BP1
LCD backplane 1
ANNUNC
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.
69
70
BUZOUT
OR
O
O
Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer
when BUZIN is low.
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.
Pull to V- to enable the BUZOUT.
71
72
73
74
75
BUZIN
ZERO
NC
R_OVH
BKOUT
I
I
Pulse to V- to enable ZERO function.
I
O
Pull to V- to allow protection resistance increasing at OVH path
If BKLIT function is enabled, this pin will change from –3V to +3V for
60 sec. idle time(see BKSET also), once press BKLIT pin again within
60 sec, this pin will change back to –3V.
76
77
78
OSC1
OSC2
VST
I
O
I
Crystal oscillator input connection
Crystal oscillator output connection
Set to V- to enable the auto range voltage mode to start from 660.0V
range.
79
80
81
82
83
84
85
86
MAXMIN
VAHZ
I
I
I
I
I
I
I
I
Pulse to V- to enable MAX/MIN function.
Pulse to V- to enable VAHZ mode.
Pulse to V- to enable Relative function.
Pulse to V- to enable HOLD function.
Pulse to V- to enable manual mode and manual range selection.
CE selection feature control pin.
Set to V- to change the backligh idle time from 60 sec. to 180 sec.
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.
Select initial state. Please refer to page 14
REL
HOLD
RANGE
CESEL
BKSET
KEY
87
88
89
90
91
92
93
SLACDC
FC5
I
I
I
I
I
I
I
Switch 5 for function selection.
Switch 4 for function selection.
Switch 3 for function selection.
Switch 2 for function selection.
FC4
FC3
FC2
FC1
Switch 1 for function selection.
LBAT9
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)
94
95
96
SDO
C+
C-
O
O
O
P
RS232 compliant serial data output.
Positive capacitor connection for on-chip DC-DC converter.
Negative capacitor connection for on-chip DC-DC converter.
Negative supply voltage. Connecting to battery negative terminal.
97
V-
98
99 - 100
DGND
AGND
P/G Digital ground. Connecting to battery positive terminal.
P/G Analog ground.
V2.6
4
08/10/06
CYRUSTEK [ Cyrustek corporation ]
