HMS38112 Datasheet, PDF (72/73 Pages) List of Unclassifed Manufacturers – 4-BIT SINGLE CHIP MICROCOMPUTERS

HMS39112 TEST B/D Example
1. Attach resonator to X1
2. Attach 2222A transistor to Q1
3. Connect PGND and D6 with jumper at E
4. Attach about 150. to R3.
Chapter 5. Application
C
B
E
Q1 R3 R2 R1 X1
E
D6
PGND
TRGND
A
K0K1K2K3R0R1R2R3
B
K0K1K2K3R0R1R2R3
C
DS1 DS2
D4D5D6D8 D5D6D7D9
REMOUT
TROUT
OSC
D GND
SW57~64 SW49~56
D6D7D8D9 D6D7D8D9
K0
D0 1
D1 9
D2 17
D3 ²⁵
D4 33
D5 41
49
57
K1 K2 K3
234
10 11 12
18 19 20
26 27 28
34 35 36
42 43 44
50 51 52
58 59 60
R0 R1 R2 R3
5 678
13 14 15 16
21 22 23 24
29 30 31 32
37 38 39 40
45 46 47 48
53 54 55 56
61 62 63 64
* DS1 is connected to A. If D6 switch is on among DS1 , A becomes D6 port.
* DS2 is connected to B. If D7 switch is on among DS2 , B becomes D7 port.
* If D6 switch among SW49~SW56 is on at D, the key 49~56 can be used as D6 port.
* If D7 switch among SW57~SW64 is on at D, the key 57~64 can be used as D7 port.
* note : the position of SW49~56 and SW57~64 in B/D is changed. The reference position is right.
* If you want to increase the remote controller valid distance, you try to disconnect R2 resistor
and lessen R1 resistor.
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