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BU21023MUV-ME2 データシート(PDF) 7 Page - Rohm

部品番号 BU21023MUV-ME2
部品情報  Resistive Type Touch Screen Controller ICs
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BU21023MUV-ME2 データシート(HTML) 7 Page - Rohm

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Technical Note
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www.rohm.com
2011.08 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
BU21023GUL,BU21023MUV,BU21024FV-M
Block Diagram / Description of each block
BU21023GUL / BU21023MUV】
Screen I/F
4-wire resistive touch screen interface
ADC
10bit A/D converter
OSC
Internal 20MHz oscillator block with optional external clock input
Regulator
Internal regulator provides 1.8V DVDD supply. DVDD can also be supplied from an
external source if DVDD_EXT pin is tied high.
Clock Generator
System clock and timing generation (10MHz CPU clock)
CPU Core
For dual touch processing, programmability and host interface
Work memory
Data memory for CPU
Program Memory
Program memory for CPU. Code can be downloaded by host processor or from an
external EEPROM
EEPROM I/F
To connect to external EEPROM if downloading program memory from EEPROM. Use
of external EEPROM is optional.
Host I/F
4-wire SPI or 2-wire I
2C like interface provides access to registers
Panel
I/F
Regulator
OSC
ADC
(10bit)
Filter
CPU
(8bit)
Work
Memory
Program
Memory
EEPROM
I/F
Host
I/F
Register
Clock
Generator
CLK_EXT
XP
ECL
EDA
SEL_CSB
SCL_SCK
SDA_SI
SO
INT
YP
XN
YN
IFSEL


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