HT6222 查看數據表（PDF） - Holtek Semiconductor
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HT6222 Datasheet PDF : 15 Pages
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HT6221/HT6222
Pad Coordinates
Pad No.
1
2
3
4
5
6
7
8
9
10
11
12
X
-38.44
-38.44
-38.44
-38.44
-38.44
-38.44
-38.44
-37.83
-20.31
-15.72
-11.21
27.27
Y
28.57
24.06
19.55
9.91
1.95
-22.72
-30.03
-34.54
-34.54
-34.54
-34.54
-34.54
Pad No.
13
14
15
16
17
18
19
20
21
22
23
24
X
38.21
38.21
38.21
38.21
38.21
38.21
31.14
21.80
-12.62
-22.26
-26.77
-36.41
Unit: mil
Y
-32.09
-18.90
-10.33
2.87
11.13
24.33
34.20
34.19
34.19
34.19
34.19
34.19
Pin Description
HT6222
Pin No. Pin Name I/O
Internal Connection
Description
1~6
R3~R8
I
CMOS IN, Pull-low Row control for keyboard matrix, active high
7
DOUT
O
CMOS OUT
Serial data output pin, with a 38kHz carrier
8
VDD
¾
¾
Positive power supply, 1.8V~3.5V for normal operation
9
D7
I
CMOS IN
Most significant data bit (D7) code setting
10
X2
11
X1
O
OSCILLATOR
455kHz resonator oscillator output
I
OSCILLATOR
455kHz resonator oscillator input
12
VSS
¾
¾
Negative power supply, ground
13
LED
O
CMOS OUT
Transmission enable indicator output
14~21
22
C8~C1
AIN
I/O CMOS IN/OUT, Pull-low Column control for keyboard matrix
I
CMOS IN, Pull-high
Pull-low
Low byte address codes (8 bits) scan input
23~24 R1~R2
I
CMOS IN, Pull-low Row control for keyboard matrix, active high
Approximate Internal Connection Circuits
C M O S IN /O U T
V DD
C M O S IN /O U T
P u ll- lo w
C M O S IN
P u ll- lo w
C M O S IN
CM OS OUT
V DD
O S C IL L A T O R
X1
X2
10M W
EN
Rev. 1.50
3
October 1, 2007
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