SM3513 Datasheet, PDF (1/3 Pages) Sharp Electrionic Components – 4-Bit Single-Chip Microcomputer(For Data Bank Use)

SM3513
SM3513
4-Bit Single-Chip Microcomputer
(For Data Bank Use)
DESCRIPTION
The SM3513 is a CMOS 4-bit single-chip micro-
computer for databank incorporating data memory
RAM, LCD driver (the output is adjustable in 16
steps for various contrast), key/switch input circuit,
8-bit parallel I/O port, 3 output ports, external mem-
ory control circuit, buzzer circuit and voltage detec-
tor circuit. One of three ports contains special out-
put circuit for infrared (IR) communication. It is easy
to realize timer function by timer signal interrupt
since the oscillator circuit is built-in.
• Instruction cycle time : 3 µs
• Operating temperature : –10 to +60°C
• Supply voltage : 3.8 to 6.0 V
• Package : 160-pin QFP (QFP160-P-2828)
[Test Sample only]
FEATURES
• ROM capacity :
Program ROM 24 k x 23 bits
Character ROM 6 x 8 x 256 bits
Constant ROM 1 k x 4 bits
• RAM capacity :
Working RAM 256 x 4 bits
Display RAM 74 x 32 bits
Data RAM
512 x 8 bits
• Memory expansion (external) : 16 M x 8 bits x 4
• Buil-in battery detector
• LCD display : 74-segment x 32-common
• I/O ports :
Parallel I/O
8 bits
Input
2 bits
Output
3 bits
Buzzer output 1 bit (4 kHz)
Key input
6 bits
• Standby release : 2 events (Timer signal, key input)
• LCD contrast adjustable : 16 levels
• Built-in oscillator :
System clock (built-in CR oscillator) 1 MHz
(external ceramic resonator) 1 MHz
Timer (built-in CR oscillator)
32.8 kHz
(external crystal)
32.768 kHz
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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