參數(shù)資料
型號(hào)： ES51988
廠商： Electronic Theatre Controls, Inc.
英文描述： 3 3/4 AUTO REL/MAX/MIN
中文描述： 3 3 / 4自動(dòng)REL /最大值/最小值
文件頁(yè)數(shù)： 5/22頁(yè)
文件大?。?/td> 254K
代理商： ES51988
5 91年11月28日
3 3/4 AUTO REL/MAX/MIN
ES51988
Pin. No Symbol.
73
74
Description.
NC
BUZOUT
Buzzer output. Audio frequency (2.0KHz) output which drives a
piezoelectric buzzer.
75
76
77
78
79
80
81
82
83
84
85
86
NC
NC
NC
NC
OSC1
OSC2
NC
KEY
REL
MAX/MIN Input to set MAX/MIN display. Pulse low to make this function active.
HOLD
Input to hold display. Pulse low to make this function active.
RANGE
Input to set automatic/manual mode and manual range selection. Pulse
low to make this function active.
FC5
Switch 5 for function selection.
FC4
Switch 4 for function selection.
FC3
Switch 3 for function selection.
FC2
Switch 2 for function selection.
FC1
Switch 1 for function selection.
LBAT9
Low battery voltage setting. If used 3V battery, connected this pin to
AGND, the default low battery voltage will be –2.3V. If used 9V
battery, when the input voltage is small than VRH(-1.2V), the low
battery annunciator will be display.
SDO
Serial data output.
C+
Positive capacitor connection for on-chip DC-DC converter.
C-
Negative capacitor connection for on-chip DC-DC converter.
V-
Negative supply voltage.Connecting to battery negative terminal.
V-
Negative supply voltage.Connecting to battery negative terminal.
DGND
Digital ground,connected to battery positive terminal.
AGND
Analog ground.
AGND
Analog ground.
Crystal oscillator (input) connection.
Crystal oscillator (output) connection.
Mode change pin.
Input to get relative display. Pulse low to make this function active.
87
88
89
90
91
92
93
94
95
96
97
98
99
100
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