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BU21023GUL データシート(PDF) 10 Page - Rohm

部品番号. BU21023GUL
部品情報  Resistive Type Touch Screen Controller ICs
ダウンロード  18 Pages
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
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BU21023GUL Datasheet(HTML) 10 Page - Rohm

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Technical Note
10/17
www.rohm.com
2011.08 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
BU21023GUL,BU21023MUV,BU21024FV-M
BU21023MUV】
No.
Pin name
I/O
Function
fig
1
NC
-
-
-
2
NC
-
-
-
3
NC
-
-
-
4
YN
I/O
Panel interface
E
5
XN
I/O
Panel interface
E
6
YP
I/O
Panel interface
E
7
XP
I/O
Panel interface
E
8
T4
I/O
Test pin
E
9
PVDD
O
Regulator output (for supply panel voltage)
-
10
AVDD
O
Regulator output (for supply analog block)
-
11
DVDD
I/O
Regulator output (for supply digital block) or supply digital voltage
(DVDD_EXT="H")
-
12
DVDD_EXT
I
Digital voltage enable (H=Hi-Z , L=DVDD enable)
E
13
VDD
-
Supply voltage
-
14
VSS
-
Ground
-
15
RSTB
I
H/W reset
E
16
CLK_EXT
I
Supply external clock for debug
A
17
T1
I
Test pin
A
18
T2
I
Test pin
A
19
T3
I
Test pin
A
20
IFSEL
I
Intereface select pin (L=SPI, H=2wire serial)
A
21
SO
O
SPI
Serila data output
2wire
-
F
22
INT
O
Interrupt output
C
23
SEL_CSB
I
SPI
Chip select
2wire
Slave address select
C
24
SDA_SI
I/O
SPI
Serial data input
2wire
Serial data in-out
C
25
SCL_SCK
I
SPI
Serial clock input
2wire
Serial clock input
C
26
EDA
I/O
EEPROM SDA
C
27
ECL
O
EEPROM SCL
C
28
NC
-
-
-
1.
Please use 1.0uF capacitors between AVDD and DVDD to GND, and leave PVDD terminal open.
2.
If DVDD_EXT=”H “, the DVDD pin can be connected to an external 1.8V power source.
3.
Please pull up the ECL, EDA, and INT pins using 10k ohm resistors as shown in the application diagram at the end of this document.
ECL and EDA pins may be directly connected to GND if an external EEPROM is not being used. Please connect a 0.1uF capacitor between
T4 and GND. T1, T2 & T3 pins should be connected to GND.
4.
When using the 2 wire serial interface, please pull up the SCL_SCK, SDA_SI pins via 10k ohms and leave SO unconnected.
5.
Please note that the values of resistors and capacitors mentioned here are only recommended values.
6.
RSTB should be held low until supply voltage VDD has ramped up and has reached a stable level.
7.
The polarity of INT pin is programmable via register 0x30
8.
Connect CLK_EXT to GND for normal use
22
INT
23
24
25
26
27
28
SEL_CSB
SDA_SI
SCL_SCK
EDA
ECL
NC
14
VSS
13
12
11
10
9
8
VDD
DVDD_EXT
DVDD
AVDD
PVDD
T4
TOP VIEW (LEAD SIDE DOWN)
28
INT
27
26
25
24
23
22
SEL_CSB
SDA_SI
SCL_SCK
EDA
ECL
NC
8
VSS
9
10
11
12
13
14
VDD
DVDD_EXT
DVDD
AVDD
PVDD
T4
BOTTOM VIEW (LEAD SIDE UP)


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