STMPE1801BJR datasheet(44/60 Pages) STMICROELECTRONICS

部件名	STMPE1801BJR

功能描述	Xpander Logic™ 18-bit enhanced port expander with keypad controller

PDF	60 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

44 / 60 page

Keypad controller

STMPE1801

44/60

Doc ID 17884 Rev 3

KPC_CTRL_HIGH

Keypad controller control (High)

Address:

Type:

R/W, R

Reset:

0x40

Description:

Keypad data register.

KPC_CMD

Keypad command register

Address:

Type:

R/W, R

Reset:

0x00

Description:

Keypad command register.

RSVD

CMB_KEY

RESERVED

SCAN_FREQ

RRW

[7:4] RESERVED

[6] CMB_KEY:

Combination key mode

1: AND function for combination-key interrupt (default).

0: OR function for combination-key interrupt.

[5:2] RESERVED

[1:0] SCAN_FREQ:

Scan frequency based on internal 32KHz clock

00: 60 Hz (default)

01: 30 Hz

10: 15 Hz

11: 275 Hz

RSVD

KPC_LOCK

SCAN

[7:2] RESERVED

[1] KPC_LOCK:

Keypad lock control bit

1: Writing 1 to enter key pad lock state when the key press stops.

STMPE1801BJR 数据表(PDF) 44 Page - STMicroelectronics

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