W90P710CD Datasheet, PDF (506/552 Pages) Winbond – 32-BIT ARM7TDMI-BASED MCU

W90P710CD/W90P710CDG
BITS
[31:26]
[25]
RESERVED
EN3KY
DESCRIPTION
-
Enable three-keys detection
Setting this bit enables hardware to detect 3 keys specified by
software
Enable three-key reset
Setting this bit enable hardware reset when three-key is detected.
[24]
[23]
[22:19]
[18:16]
[15]
[14:11]
[10:8]
[7]
[6:3]
[2:0]
ENRST
RESERVED
K32R
K32C
RESERVED
K31R
K31C
RESERVED
K30R
K30C
EN3KY ENRST
Function
0
X
three-key function is disable
1
0
generate three-key interrupt
1
1
hardware reset by three-key-reset
-
The #2 key row address
The #2 means the row address and the column address is the highest
of the specified 3-kyes.
The #2 key column address
-
The #1 key row address
The #1 means the row address and the column address is the 2nd of
the specified 3-kyes.
The #1 key column address
-
The #0 key row address
The #0 means the row address and the column address is the
lowest of the specified 3-kyes.
The #0 key column address
Application Note: Due to hardware scan from {row[0], col[0]}, {row[0], col[1]}, …, to {row[15], col[7]}
the {K30R,K30C} should be filled the lowest address of the three-keys. For example, if {2,0} {4,6},
{1,3} keys are defined as three-keys. Software should set {K30R, K30C} = {1, 3}, {K31R, K31C} = {2,
0} and {K32R, K32C} = {4, 6}.
Publication Release Date: September 19, 2006
- 507 -
Revision B2