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SM3512 データシート(PDF) 1 Page - Sharp Corporation

部品番号 SM3512
部品情報  4-Bit Single-Chip Microcomputer(For Data Bank Use)
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メーカー  SHARP [Sharp Corporation]
ホームページ  http://sharp-world.com/
Logo SHARP - Sharp Corporation

SM3512 データシート(HTML) 1 Page - Sharp Corporation

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In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books,
etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
SM3512
DESCRIPTION
The SM3512 is a CMOS 4-bit single-chip micro-
computer for databank incorporating data memory
RAM, LCD driver, key/switch input circuit, 8-bit par-
allel I/O port, 2 output ports, external memory con-
trol circuit, and buzzer output circuit.
FEATURES
• ROM capacity :
Program ROM
8 k x 23 bits
Character ROM
5 x 9 x 128 bits
Constant ROM
208 x 4 bits
• RAM capacity :
Working RAM
256 x 4 bits
Display RAM
60 x 9 bits
Data RAM
8 k x 8 bits
• Memory expansion (external) : 8 k x 8 bits
• LCD display : 60-segment x 9-common
• I/O ports :
Parallel I/O
8 bits
Input
1 bit
Output
2 bits
Buzzer output
1 bit (4 kHz)
Key input
6 bits
• Standby release : 2 events (2 Hz signal, key input)
• Built-in oscillator :
• Instruction cycle time : 12 µs
• Operating temperature : –10 to +60°C
• Supply voltage : 2.5 to 3.4 V
• Package : 100-pin QFP (QFP100-P-1420)
SM3512
4-Bit Single-Chip Microcomputer
(For Data Bank Use)
System clock (built-in CR oscillator) 250 kHz
Timer (built-in CR oscillator)
32.8 kHz
(external crystal)
32.768 kHz


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