SM3514 Datasheet, PDF (1/3 Pages) Sharp Electrionic Components – 4-Bit Single-Chip Microcomputer(For Data Bank Use)

SM3514
DESCRIPTION
The SM3514 is a CMOS 4-bit single-chip micro-
computer for databank incorporating data memory
RAM, LCD driver, key input circuits and buzzer out-
put circuit. By connecting an external crystal, a 1 Hz
timer interrupt is made possible for easier clock
function.
FEATURES
• ROM capacity :
Program ROM 8 k x 23 bits
Character ROM 5 x 8 x 128 bits
• RAM capacity :
Working RAM 256 x 4 bits
Display RAM 60 x 8 bits
Data RAM
512 x 8 bits
• LCD display : 60 - segment x 8 - common
• I/O ports :
Buzzer output 1 bit (4 kHz)
Key input
7 bits
• Standby release : 2 events (2 Hz signal, key input)
• Built-in oscillator :
System clock (built-in CR oscillator) 300 kHz
Timer (built-in CR oscillator)
32.8 kHz
(external crystal)
32.768 kHz
• Instruction cycle time : 10 µs
• Operating temperature : –10 to +60°C
• Supply voltage : 2.5 to 3.4 V
• Package : 100-pin QFP (QFP100-P-1420)
SM3514
4-Bit Single-Chip Microcomputer
(For Data Bank Use)
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.
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