Sam4s ER-420F - Key Scan Part

11-6 SAM4S ER-420M/F SERIES
11-5 KEY SCAN PART
4
Date
of
4
3 2 1
AB
Size
3 2 1
B
Drawn by Sheet
C
TITLE :
D
C D
File Name
A3
Rev
Shin Heung Precision Co., Ltd.
4
Date
of
4
3 2 1
AB
Size
3 2 1
B
Drawn by Sheet
C
TITLE :
D
C D
File Name
A3
Rev
Shin Heung Precision Co., Ltd.
5
VCC
R1224.7K
R1234.7K
R1244.7K
R1254.7K
A(3)
CS_KEYSCAN
A(1)
D29 D28 D27 D26
3
CN14:C
5
CN14:E
7
CN14:G
_RD
CS_EXTIN
CS_KEYSCAN
SEN_DISPDISCON
ALL_CLEAR SEN_DWRCOMP
SEN_PEND_R
SEN_PRTDISCON
SEN_PEND_J
ALL_CLEAR
3
CN16:C
ER420 MAIN.SCH
ER-420 MAIN
6
CN15:F
5
CN15:E
2
CN15:B
3
CN15:C
8
CN13:8
6
CN13:6
5
CN13:5
3
CN13:3
2
CN13:2
8
0x100008~0X10000F
A(2) A(0)
VCC
100nF C96
D24 D25
MMBD6050LT1
D22 D23
2
CN14:B
4
CN14:D
6
CN14:F
8
CN14:H
_RD
D(0:7)
VCC
100nF C100
VCC
MODESCAN_COMMON
2
CN16:B
2004.04.21
[Key Return]
4
CN15:D
7
CN13:7
4
CN13:4
V1.4
VCC
1
CN14:A
CON-FPC;8P,2.54MM,ST
100nF C82
VCC
VCC
R1104.7K
R1114.7K
R1124.7K
R1404.7K
R113 39
[Mode Key]
R14439 R14339 R14239 R14139
A(0:19)
D(6) D(7) D(5) D(3) D(4) D(2) D(0) D(1) D(6) D(7) D(3) D(4) D(0) D(1)
[All Clear Switch]
R13739 R13839 R13939 R13639
D(5) D(2)
KEY BOARD PART
100nF C103
VCC
1
CN15:A
CON-FPC;6P,2.54MM,ST
Hyun-Oh,Yun
[Key Scan]
8
GND
6
E3
9
Q6
4
E1
11
Q4
3
A2
13
Q2
1
A0
16
VCC
15
Q0
2
A1
7
Q7
5
E2
14
Q1
12
Q3
10
Q5
U27
74HC138
19
OE2
8
A6
9
A7
13
Y5
12
Y6
5
A3
6
A4
16
Y2
15
Y3
2
A0
3
A1
18
Y0
11
Y7
14
Y4
17
Y1
1
OE1
7
A5
4
A2
10
GND
20
VCC
74HC541
U17
19
OE2
8
A6
9
A7
13
Y5
12
Y6
5
A3
6
A4
16
Y2
15
Y3
2
A0
3
A1
18
Y0
11
Y7
14
Y4
17
Y1
1
OE1
7
A5
4
A2
10
GND
20
VCC
74HC541
U29
1
CN16:A
CON-NOWALL;3P,2.54MM,ST
R133 10K
MMBD6050LT1 D18
1
CN13:1
CON-BOX;8P,2.5MM,ST(YH)
CPU PORT 10.3
ᴴㇵ
ADD(0x100000)