BU21049GUL Datasheet, PDF (21/26 Pages) Rohm – 4-wire Resistive Touch Screen Controller

BU21049GUL
Datasheet
PAGE=0, ADDR=0xD: STATUS (Read only)
D7
D6
D5
D4
TEST
AUTO
PDM
-
Bit D7: TEST
This bit will become “1” during TEST mode.
D3
BUSY
D2
ACTIVE
D1
CALIB
_DONE
D0
TOUCH
Bit D6: AUTO
This bit will become “1” at conversion function 0.
Bit D5: PDM
PDM setting value of command byte1.
Bit D3: BUSY
This bit will become “1” during IC converting coordinate data.
Bit D2: ACTIVE
This bit will become “1” when internal analog circuit is active.
Bit D1: CALIB
This bit will become “1” in case that dual touch detection parameter adjustment is finished by command (CF=0x5).
This bit will be clear when write “1” to this bit.
Bit D0: TOUCH
This bit will become “1” when detect pen-down at internally.
PAGE=0, ADDR=0xE: HW_ID1 (Read only)
D7
D6
D5
D4
D3
D2
D1
D0
HW_IDH
Bits D7-D0: HW_IDH
High 8bit of IC’s ID
PAGE=0, ADDR=0xF: ID (Read only)
D7
D6
D5
D4
D3
D2
D1
D0
HW_IDL
Bits D7-D0: HW_IDL
Low 8-bit of IC’s ID
PAGE=1, ADDR=0x0: FREE_SW1
D7
D6
D5
D4
D3
D2
D1
D0
SW_YP_ SW_YP_ SW_YN_ SW_YN_ SW_XP_ SW_XP_ SW_XN_ SW_XN_
POW
GND
POW
GND
POW
GND
POW
GND
Bits D7-D0: SW_**_POW(GND)
Driver setting at conversion function 4(Free scan)
Drive to “+” by set POW and “-”by set GND, Must not set “+”and“-”to one terminal at the same time.
** = the corresponding terminal name
PAGE=1, ADDR=0x1: FREE_SW2
D7
D6
D5
RSV VREFN_XN VREFN_YN
Bits D7 – D5: RSV0
Reserved. They must be set “0”.
D4
SW_AUX
D3
SW_YPM
D2
SW_YNM
D1
SW_XPM
D0
SW_XNM
Bit D4: SW_AUX
Bit D3-D0: SW_**M
A/D input setting at conversion function 4(Free scan)
** = the corresponding terminal name
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TSZ22111・15・001
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TSZ02201-0Y1Y0F300010-1-2
31.JAN.2012 Rev.001