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ES51955 Fiches technique(PDF) 4 Page - Cyrustek corporation

No de pièce ES51955
Description  Dual Display/Inrush
Download  31 Pages
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Fabricant  CYRUSTEK [Cyrustek corporation]
Site Internet  http://www.cyrustek.com.tw
Logo CYRUSTEK - Cyrustek corporation

ES51955 Fiches technique(HTML) 4 Page - Cyrustek corporation

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v2.3
10/06/25
4
ES51955(5000counts)
Dual Display/Inrush
53
LPFC1
O
Capacitor C1 connection for internal low-pass filter
54
LPFC2
O
Capacitor C2 connection for internal low-pass filter
55
LPFC3
O
Capacitor C3 connection for internal low-pass filter
56
LPFOUT
O
Capacitor C1 connection for internal low-pass filter
57
SLEEP
O
Sleep mode indicator, asserts low in SLEEP mode.
58
BUZIN
I
Pull to V- to enable the BUZOUT.
59
FREQ
I
Frequency counter input, offset V-/2 internally by the chip.
60
CAL_EN
I
Pulled to V- to enable the semi-auto calibration scheme.
61
SDA
I/O
Input/Output from/to EEPROM 24C02 data
62
SCL
O
Output to EEPROM 24C02 clock
63-86
SEG24-SEG01
O
LCD segment output driver 01-24 (SEG signals)
87-90
BP4-BP1
O
LCD backplane 1-4 (COM signals)
91
ALARM
O
LED control output driver for HV indication and NCV detection
92
BUZOUT
O
Outputs a 2KHz audio frequency signal for driving piezoelectric
buzzer when BUZIN is low or functional key is active.
93
BKOUT
O
If BKLIT function is enabled, this pin will change from V- to V+
For 60 sec, once press BKLIT pin again within 60 sec, this pin will
Change back to V-.
94
OSC1
I
Crystal oscillator input connection
95
OSC2
O
Crystal oscillator output connection
96
LCDCAP
I
LCD bias voltage bypass capacitor connection
97
Opt_nF
I
Pull to V- to change the initial range to 50nF in Cap mode.
98
C_clamp
I
Pull to V- to change the initial range to 5uF in Cap mode.
99
S50V
I
Switch control for function selection
100
SVR
I
Switch control for function selection
101
APOSEL
I
Auto power off idle time selection
102
CAL_nF
I
Pulled to V- to enable the small capacitor calibration scheme.
103
CESEL
I
OL selection feature control pin in Voltage mode.
104
TSEL
I
Pulled to V- to cancel the 500oC auto range mode
105
ALARM1
O
LED control output driver for short-circuit detected in Cont. mode.
106
DIS_LPF
I
Pulled to V- to disable the low-pass-filter path in ACA mode
107
DIS_DGB
I
Pulled to V- to disable the buzzer beeper when HV danger appears.
108
DIS_DCA
I
Pulled to V- to disable DCA function in DCV mode.
109
ENIR
I
Pulse to V- to enable the INRUSH function for clamp ACA mode
110
BKLIT
I
Back light function. Pulse to V- to set BKOUT pin output.
111
SEL
I
Pulse to V- to enable function selection
112
HOLD
I
Pulse to V- to enable HOLD function.
113
RANGE
I
Pulse to V- to enable manual mode and manual range selection.
114
SAC
I
Switch for AC/DC function selection.
115-118
FC4-FC1
I
Switches for function selection.
119
C-
O
Negative capacitor connection for on-chip DC-DC converter.
120
C+
O
Positive capacitor connection for on-chip DC-DC converter.
121
LBAT9
I
Multi-level low battery configuration input. Simple external resistor
divider is required.
122
V-
P
Negative supply voltage.
123
V-
P
Negative supply voltage.
124
V+
O
Output of on-chip DC-DC converter and positive supply voltage.
125
V+
O
Output of on-chip DC-DC converter and positive supply voltage.
126
DGND
P/G Digital ground.
127
AGND
P/G Analog ground.
128
AGND
P/G Analog ground.


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