BU21072MUV_16 Datasheet, PDF (9/40 Pages) Rohm – Capacitive Switch Controller ICs

BU21072MUV / BU21078MUV / BU21078FV
【0x1C : State of IC】
Name:
STATE
Address: 0x1C
Description: This register indicates the state of IC.
CALIB : During calibration：
This bit is indicates that IC is during calibration. When this bit is "1" , IC is doing calibration.
The required time for calibration：About 150msec.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
0x1C
-
-
-
-
-
-
-
R/W
-
-
-
-
-
-
-
Initial val.
-
-
-
-
-
-
-
Bit0
CALIB
R
0
【0x1D : Interrupt of PWM continuous flashing】
Name:
DETECT_PWM_FINISH
Address: 0x1D
Description: This register indicates the end of the LED PWM drive. This register has a bit aware of each LED. The
logical OR of all bits of this register will be the bit PWM that is included the "Interrupt Source" registers.
1 : Finished LED PWM drive. 0 : Clear.
0x1D
R/W
Initial val.
Bit7
LED7
R
0
Bit6
LED6
R
0
Bit5
LED5
R
0
Bit4
LED4
R
0
Bit3
LED3
R
0
Bit2
LED2
R
0
Bit1
LED1
R
0
Bit0
LED0
R
0
【0x1E : Read register for operation check of CPU】
Name:
RACT
Address: 0x1E
Description: This register is a read register for operational check of the IC. The value written to the write register for
operation check (Address is 0xFE) is copied to this register. Comparing the write value with the read value
is equal, CPU and I/F are operating normally.
The required time to copy to this register from the write register for operation check：About 20usec.
0x1E
R/W
Initial val.
Bit7
RACT[7]
R
0
Bit6
RACT[6]
R
0
Bit5
RACT[5]
R
0
Bit4
RACT[4]
R
0
Bit3
RACT[3]
R
0
Bit2
RACT[2]
R
0
Bit1
RACT[1]
R
0
Bit0
RACT[0]
R
0
【0x85 , 0x8A : Software Reset】
Name:
SRST
Address: 0x85, 0x8A
Description: These registers make a hardware reset. When the value of "0x85" Register is set to 0x55 and the value of
"0x8A" Register is set to 0xAA, a hardware reset will be generated.
0x85
0x8A
R/W
Initial val.
Bit7
SRST[7]
SRST[15]
R/W
0
Bit6
SRST[6]
SRST[14]
R/W
0
Bit5
SRST[5]
SRST[13]
R/W
0
Bit4
SRST[4]
SRST[12]
R/W
0
Bit3
SRST[3]
SRST[11]
R/W
0
Bit2
SRST[2]
SRST[10]
R/W
0
Bit1
SRST[1]
SRST[9]
R/W
0
Bit0
SRST[0]
SRST[8]
R/W
0
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TSZ02201-0L5L0F300640-1-2
14.Jul.2016 Rev.004