BU21024FV-M Datasheet, PDF (2/18 Pages) Rohm – Resistive Type Touch Screen Controller ICs

BU21023GUL,BU21023MUV,BU21024FV-M
Technical Note
●Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
Condition
Power supply voltage
VDD
-0.3 ～ 4.5
V
Input voltage
VIN
BU21023GUL
Power dissipation BU21023MUV
Pd
BU21024FV-M
VSS-0.3 ～ VDD+0.3
V
830 ^*1
mW
704 ^*2
mW
850 ^*3
mW
Storage temperature range
Tstg
-50 ～ 125
℃
*1 Derate by 7.04 mW /℃ centigrade when ambient temperature exceeds 25℃. Measured using Epoxy-Glass PCB measuring 50x58x1.75 mm
*2 Derate by 8.30mW /℃ centigrade when ambient temperature exceeds 25℃. Measured using Epoxy-Glass PCB measuring 50x58x1.75mm
*3 Derate by 8.50mW /℃ centigrade when ambient temperature exceeds 25℃. Measured using Epoxy-Glass PCB measuring 50x58x1.75mm
●Recommended Operating Conditions
Parameter
Power supply voltage
Ratings
Symbol
Unit
Min.
Typ.
Max.
VDD
2.70
3.00
3.60
V
Condition
Digital core power supply
DVDD
1.62
1.80
1.98
V DVDD_EXT=H
BU21023GUL
Operating
temperature range
BU21023MUV
BU21024FV-M
Topr
-20
-40
25
25
85
℃
85
℃
Note: The BU21023/BU21024 controllers can be operated with a single 3V VDD supply.
It is also possible to supply 1.8V DVDD from an external source if the DVDD_EXT pin is connected to logic high.
●Electrical Characteristics (Ta=25℃, VDD=3.00V)
Parameter
Symbol
Min.
Low-level input voltage
VIL VSS-0.5
Limits
Typ.
Max.
Unit
-
0.2×VDD V
Condition
High-level input voltage
VIH 0.8×VDD
-
VDD+0.5 V
Low-level output voltage
VOL
-
-
VSS+0.4 V
High-level output voltage
VOH VDD-0.4
-
-
V
Standby current
Ist
-
-
1
µA RSTB=L
Sleep current1
Icc1
-
60
100
µA DVDD_EXT=L
Sleep current2
Icc2
-
10
20
µA DVDD_EXT=H
Operating current
Idd
-
4
6
mA No load
Oscillation frequency
Freq
18
20
22
MHz
Resolution
Ad
1024×1024
Bit
Differential non-linearity error
DNL
-3.0
-
+3.0
LSB
Integral non-linearity error
INL
-3.0
-
+3.0
LSB
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2/17
2011.08 - Rev.A