NJU6538 View Datasheet(PDF) - Japan Radio Corporation
Part Name
Description
Manufacturer
NJU6538 Datasheet PDF : 27 Pages
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NJU6538
DC Electrical Characteristics
VDD=2.7 to 5.5V, Ta= - 40 to 85°C
PARAMETER
SYMBO
L
CONDITION
MIN
TYP
MAX UNIT NOT
E
Power supply (1)
Power supply (2)
Output voltage
VDD
VLCD1
VLCD2
VDD
VLCD1
VLCD2
2.7
5.5
V
5.0
10.0
4.0
VLCD1 V
Input voltage
V0 V0
V1 V1
VSS
VSS
VLCD2x3/4 VLCD2
VLCD2x2/4 VLCD2
V1
V2 V2
VSS VLCD2x1/4 VLCD2
”H” level input voltage (1)
”H” level input voltage (2)
VIH(1) K0 to K4
VIH(2) SCL, SIO, CE
0.6VDD
0.8VDD
VDD
V
VDD
V
”L” level input voltage (1) VIL(1) K0 to K4, SCL, SIO, CE
0
Hysteresis voltage
VH SCL, SIO, CE
”H” level input current
IIH SCL, SIO, CE,
VIN = VDD
0.25VDD
0.2VDD V
V
5.0
µA
”L” level input current
IIL
SCL, SIO, K0 to K4, CE, V IN = 0V
-5.0
µA
Pull-up resistance
Pull-down resistance
Output off-leak current
RPU RESb
VDD=5.0V, V IN = 0V
50
RPD K0 to K4, VDD=5.0V, VIN = VDD
50
IOFFH SIO, VO=5.5V
150
250
kΩ
150
250
kΩ
6.0
µA
”H” level output
voltage (1)
VOH(1) S0 to S4
VDD=5.0V, Io = -500uA VDD-1.2
VDD=3.0V, Io = -250uA VDD-1.1
VDD-0.2
V
VDD-0.1
”H” level output
voltage (2)
”L” level output voltage (1)
”L” level output voltage (2)
VOH(2) Po0 to Po3
VOL(1) S0 to S4
VOL(2) Po0 to Po3
VDD=5.0V,
VDD=3.0V,
VDD=5.0V,
VDD=3.0V,
VDD=5.0V,
VDD=3.0V,
Io = -10mA
Io = -5mA
Io = 25µA
Io = 5µA
Io = 10mA
Io = 5mA
VDD-1.0
VDD-0.6
0.2
0.05
V
1.5
V
0.6
1.0
V
0.6
”L” level output voltage (3) VOL(3) SIO
Io = 1mA
0.5
V
Driver
ON-resistance (COM)
RCOM
Ta=25°C, VO=V LCD2,VSS,V0,V2
+Id=1µA (COM terminal)
40
kΩ 2
Driver
ON-resistance (SEG)
RSEG
Ta=25°C, VO=V LCD2,VSS,V1
+Id=1µA (SEG terminal)
40
kΩ 2
Oscillation Frequency
fOSC
Ta=25°C, VDD=5.0V
ROSC=150kΩ
38
50
62
kHz
LCD Driving voltage
V0
V1
E.V.R. value ”0,0,0,0”
V LCD1=8.0V
V2
5.8
6.0
6.2
3.8
4.0
4.2
V
1.8
2.0
2.2
Bleeder resistance
E.V.R. resistance
Power down
detect voltage
RB
REVR
VDET
VLCD2-VSS, Ta=25°C
VLCD1-VLCD2, Ta=25°C
40
kΩ
10
kΩ
0.8
1.4
2.0
V
Reset time
Tr RESb
1.0
µs
Reset ”L” pulse width
Trw RESb
IDD1 Power save mode
10.0
µs
100
µA
Operating current
IDD2
ILCD1
VDD=5.5V,
Output open fOSC=50kHz,
Power save mode
500
µA
5
µA
Note 1)
Note 2)
VLCD1=10.0V
ILCD2
Output open fOSC=50kHz,
1000 µA
The relation : VLCD1≥VLCD2≥V0≥V1≥V2≥VSS must be maintained.
RCOM and RSEG are the resistance values between power supply terminals (VSS, VLCD2, or V0, V1,
V2) and each common terminal, and supply voltage (VSS, VLCD2, or V0, V1, V2) and each segment
terminal respectively, and measured when the current Id is flown on every common and segment
terminals at a same time.
- 24 -
Ver.2003-05-09
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