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| SM3513 SM3513 DESCRIPTION The SM3513 is a CMOS 4-bit single-chip microcomputer 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 memory control circuit, buzzer circuit and voltage detector circuit. One of three ports contains special output circuit for infrared (IR) communication. It is easy to realize timer function by timer signal interrupt since the oscillator circuit is built-in. * * * * 4-Bit Single-Chip Microcomputer (For Data Bank Use) Instruction cycle time : 3 s Operating temperature : -10 to +60C 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. -1- SM3513 SYSTEM COMFIGURATION EXAMPLE (HIGH END DATA BANK) Common signal Segment signal S1-S74 S9-S32 CE CE1-CE4 H1-H32 VREF LCD SYNC LCD * CTRL V4 V3 V2 V1 VH Reference voltage Expand memory 16 M-byte x 4 RW DIO1-DIO8 SM3513 VCC KI1-KI7 KI8 VCC TEST CCI CCO RESET EO2 CXI CXO BZ VCC Infrared signal for IR communication Key matrix S1-S8 S67-S74 (MAX.112-key) + SW 6V RESET - key Buzzer -2- SM3513 160 QFP (QFP160-P-2828) 0.65TYP. 120 121 0.3 0.1 0.15 M 81 80 0.15 28.0 0.3 31.2 0.5 160 1 (1.6) 28.0 0.3 31.2 0.5 41 40 (1.6) (1.6) 0.15 1.65 3.45 0.2 0.1 0.1 Package base plane 0.15 0.05 (1.6) -3- (29.6) |
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