STMPE321 Register map and function description
Doc ID 15791 Rev 3 13/40
0x50-0x52
STRENGTH_THRES
[0-2]
8 R/W 0x01
Setting of strength threshold for each
channel
0x60 -
0x62
STRENGTH [0-2] 8 R 0x00 Strength
0x70 -
0x72
CAL_IMPEDANCE [0-2] 8 R 0x00 Calibrated impedance
0x80 -
0x82
IMPEDANCE [0-2] 8 R 0x00 Impedance
0x92 INT_PENDING 8 R/W 0x00 Status of GINT interrupt sources
Table 5. Register summary map table (continued)
Address Register name Bit Type Reset value Function
System and identification registers STMPE321
14/40 Doc ID 15791 Rev 3
5 System and identification registers
CHIP_ID_x Device identification
Address: 0x00, 0x01
Type: R
Reset: 0x03, 0x21
Description: 16(8+8)-bit device identification
Table 6. System and identification registers map
Address Register name Bit Type Reset Function
0x00 CHIP_ID_0 8 R 0x03
Device
identification
0x01 CHIP_ID_1 8 R 0x21
Device
identification
0x02 ID_VER 8 R 0x03 Revision number
0x03 SYS_CFG_1 8 R/W 0x00
System
configuration 1
0x04 SYS_CFG_2 8 R/W 0xEF
System
configuration 2
STMPE321 System and identification registers
Doc ID 15791 Rev 3 15/40
ID_VER Revision number
Address: 0x02
Type: R
Reset: 0x03
Description: 8-bit revision number
SYS_CFG_1 System configuration 1
Address: 0x03
Type: R/W
Reset: 0x00
Description: The reset control register enables the reset of the device
76543 2 1 0
RESERVED SLEEP WARM_RESET SOFT_RESET HIBERNATE
[7:4] RESERVED
[3] SLEEP:
Write ‘1’ to enable sleep mode. Hardware resets this bit to ‘0’ after it successfully enters sleep
mode.
[2] WARM_RESET:
Write ‘1’ to initiate a warm reset. Register content remains, state machine reset.
[1] SOFT_RESET:
Write ‘1’ to initiate a soft reset. All registers content and state machines reset.
[0] HIBERNATE: Force the device into hibernation mode.
Write ‘1’ to enter hibernate mode. Hardware resets this bit to ‘0’ after it successfully enters
hibernate mode.

STMPE321QTR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
IC CTLR TOUCH KEY 3CH 12-QFN
Lifecycle:
New from this manufacturer.
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