LS3102 データシートの表示（PDF） - BOWIN ELECTRONIC CO.
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LS3102 Datasheet PDF : 8 Pages
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LSI
Functional Description
LS3102
1. RC Oscillator /Crystal
The LS3102 can use either a crystal oscillator or RC oscillator to provide the internal timing by
mask option.
2. Program ROM
The LSI3102 has internal 1Kx12 bit ROM providing simple operation. It has four internal stack.
3. Interrupt Control
The LSI3102 has 5 different sources of interrupt, namely, POWERUP, F4HZ, F16HZA, F16HZS
and F1HZ. The starting address of the interrupt are as follow :
Interrupt
POWERUP
F1HZ
F4HZ
F16HZA
F16HZS
Address
0x3ff
0x3fe
0x3fc
0x3f8
0x3f1
The system generates 16 interrupts for F16HZS in one second but only 11 interrupts for F16HZA.
The other 5 interrupts goes to F4HZ (4) and F1HZ (1) interrupts.
3. RAM
The system has 73x4bit of program RAM with IO address as follows.
Address
0-0fH
10H-1fH
20-2fH
30H
31H
32H
33H
34H-3fH
54H-56H
58H-5AH
5CH-5EH
70H
71H
72H
73H
Description
RAM
Display RAM
RAM
rptrl
rptrh
rptr1
Beep Control
RAM
Display RAM
Display RAM
Display RAM
Tone Data Low
Tone Data High
Tone Control Register
IOX Register
Initialize
undefined
undefined
undefined
undefined
undefined
undefined
0
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
0
0
Address 31H:30H forms a 8 bit address for indirect read/write operation.
Address 32H:30H forms a 8 bit address for indirect read/write operation.
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