NJU9214FG1 Просмотр технического описания (PDF) - Japan Radio Corporation
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NJU9214FG1 Datasheet PDF : 28 Pages
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NJU9214
No.
SYMBOL
I/O
FUNCTION
26
27
28 to 30
PON
RST
T1 to T3
In
Auto Power-off Mode Release Terminal with Input Pull-up Resistance
( 300kΩ )
In System Reset Terminal with Input Pull-up Resistance ( 10kΩ )
In Test Terminal with Input Pull-up Resistance ( 300kΩ )
31 to 34 COM1 to COM4 Out LCD Common Terminal
35 to 62 SEG1 to SEG28 Out LCD Segment Terminal
63
DSR
In RS232C Data Set Ready Terminal
64
DTR
Out RS232C Data-Terminal Terminal
65
TXD
Out RS232C Data Output Terminal
66
BZ
Out Piezo Buzzer Driving Terminal
67
XT2
Out Crystal oscillation Inverter ( Output )
68
XT1
In Crystal oscillation Inverter ( Input )
LCD driving voltage I/O Terminal
69
VDSP
I/O
Opened : VDSP=(VDDD-VSSD) X 3/5
Connected to VSSD : VDSP=(VDDD-VSSD)
70
VSSD
- Digital VSS VSSD=0.0V
71
SLEEP
Out Auto Power-off signal Terminal ( Power-off : " H " Level )
72
VSSA
- Analog VSS VSSA = –5.0V
73
BLD
In Buttery Life Detector Terminal, Detection: BLD < about 4.0V
74, 75
CIF2, CIF1
I/O High-speed integration capacitor connecting Terminal
76
BUF
Out High-speed integrator buffer output Terminal
77, 78
CL2, CH2
I/O High-speed integrator reference capacitor connecting Terminal
79 to 81
82, 83
VREF3
to VREF1
CH1, CL1
VREF1 : High-accurate integrator reference voltage input Terminal
In
VREF2 : High-speed integrator reference voltage input Terminal
VREF3 : Capacitance measurement integrator reference voltage
input Terminal
I/O
High-accurate integrator Reference capacitor connecting Terminal
CL1 ; " – " , CH1 ; " + "
84, 85
INT1, INT2
I/O High-accurate integrator capacitor connecting Terminal
86, 87 SGND2, SGND1 In Analog sensing Terminal
88
AGND
- Analog GND Terminal
89
IVSH
In Current measurement ( A ) sensing Terminal
90
IVSL
In Current measurement ( mA ) sensing Terminal
91
ADP
In Adapter input Terminal
92
OVX
In Sensing Terminal ( Resistance, Continuity, Capacitance )
93
OVH
Out Voltage supply Terminal (Resistance, Continuity, Diode, Capacitance)
94
VR7
I/O Bleeder Resistance Terminal for 4V, 40V range
95
VR6
I/O Bleeder Resistance Terminal for 400Ω range
96
VR5
I/O Bleeder Resistance Terminal for 4000V, 4kΩ range
97
VR4
I/O Bleeder Resistance Terminal for 400V, 40kΩ range
98
VR3
I/O Bleeder Resistance Terminal for 40V, 400kΩ range
99
VR2
I/O Bleeder Resistance Terminal for 4V, 4000kΩ range
100
VI
In Voltage input Terminal for 400mV range
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