STEVAL-ICB002V1 STMicroelectronics, STEVAL-ICB002V1 Datasheet - Page 27

• Manufacturer Part Number: STEVAL-ICB002V1
• Description: BOARD EVAL TOUCH STM32/STMPE821
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ICB002V1

• Sensor Type: Touch, Capacitive
• Sensing Range: 3 Button/Key
• Interface: USB
• Voltage - Supply: 3.3V
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: STMPE821
• Silicon Manufacturer: STMicroelectronics
• Kit Contents: Board
• Features: PWM/GPIO Output, Multiple Touch Detection, Demonstrates Up To 3 Capacitive Touch Keys
• Svhc: No SVHC (15-Dec-2010)
• For Use With: 497-10173 - BOARD EVAL S-TOUCH STM32
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-10167

STMPE821
FEATURE_SELECT
Address:
Type:
Reset:
Description:
ETC_WAIT
Address:
Type:
Reset:
Description:
7
7
[7:3] RESERVED
[2:1] AFS[1:0]:
[7:0] ETC_WAIT[7:0]:
[0] Filter EN:
6
6
0x20
R/W
0x04
Controls AFS (advanced filtering system and second level filtering feature
“00’: reserved
“01’ AFS mode 1 (only 1 strongest key)
‘10’: AFS mode 2 (all keys that are above threshold)
‘11’: AFS mode 3 (the 2 strongest keys)
Write '1' to enable filter
0x21
R/W
0x27
Sets the wait time between the calibration and the last button touch
ETC wait time = ETC_Wait[7:0] *64 + sensor clock period
A "non-touch" condition must persist for this wait time, before an ETC operation is carried out.
Range: 5 mS - 20 s
RESERVED
5
5
4
4
Doc ID 14478 Rev 5
ETC_WAIT[7:0]
3
3
2
2
Capacitive touch module registers
AFS[1:0]
1
1
Wait time setting
Feature select
Filter EN
0
0
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