STMPE1208S_08 Datasheet, PDF (30/51 Pages) STMicroelectronics – Xpander Logic with 12-channel touchkey

Register map and function description
STMPE1208S
INT_CLR
Interrupt clear register
7
6
5
4
3
2
1
-
EOC
EINT
-
I2A
A2I
0
TOUCH
Address:
0x27
Type:
Reset:
0x00
Description:
If the corresponding bit in the INT_PENDING register is set, system software must
write '1' to this register to clear the bits in INT_PENDING register.
[7] RESERVED
[6] EOC:
End of calibration.
[5] EINT:
EINT interrupt sources (GPIO input) changes.
[4:3] RESERVED
[2] I2A:
SLEEP to active transition
[1] A2I:
Active to idle transition
[0] TOUCH:
Touch detect.
BEEP_PERIOD
Beep period
7
6
5
4
3
2
1
0
BEEP_PERIOD [7:0]
Address:
0x28
Type:
R/W
Reset:
0x00
Description:
Beep period
[7:0] BEEP_PERIOD:
Period = Beep Period [7:0] * 8* System Clock Period
System Clock Period = 0.625 μs (1.6 MHz) to 5 μs (200 KHz)
Period of Beep (min) = 0.625 μs * 8* 1 = 5 μs
Period of Beep (max) = 5 μs * 8* 255 = 10 ms
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