W90N745CD Datasheet, PDF (381/422 Pages) Winbond – 16/32-bit ARM microcontroller

W90N745CD/W90N745CDG
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]
ENRST
EN3KY
0
1
1
ENRST
X
0
1
Function
three-key function is disable
generate three-key interrupt
hardware reset by three-key-reset
[23]
RESERVED -
[22:19]
K32R
The #2 key row address
The #2 means the row address and the column address is the highest
of the specified 3-kyes.
[18:16]
K32C
The #2 key column address
[15]
RESERVED -
[14:11]
K31R
The #1 key row address
The #1 means the row address and the column address is the 2nd of
the specified 3-kyes.
[10:8]
K31C
The #1 key column address
[7]
RESERVED -
The #0 key row address
[6:3]
K30R
The #0 means the row address and the column address is the
lowest of the specified 3-kyes.
[2:0]
K30C
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}.
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