HT6221 Holtek Semiconductor Inc., HT6221 Datasheet - Page 3

• Manufacturer Part Number: HT6221
• Description: Ht6221/ht6222 -- Multi-purpose Encoders
• Manufacturer: Holtek Semiconductor Inc.

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