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SM3517 SM3517 DESCRIPTION The SM3517 is a CMOS 4-bit single-chip microcomputer for databank incorporating data memory RAM, LCD driver, key/switch input circuit, 8-bit parallel I/O port, 2 output ports, external memory control circuit, and buzzer output circuit. 4-Bit Single-Chip Microcomputer (For Data Bank Use) 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 2 k x 8 bits * Memory expansion (external) : 32 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 : System clock (built-in CR oscillator) 250 kHz Timer (built-in CR oscillator) 32.8 kHz (external crystal) 32.768 kHz * Instruction cycle time : 12 s * Operating temperature : -10 to +60C * Supply voltage : 2.5 to 3.4 V * Package : 100-pin QFP (QFP100-P-1420) [Test Sample only] 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- SM3517 SYSTEM COMFIGURATION EXAMPLE Common signal Segment signal CE CE S1-S60 H1-H9 VB S7-S21 Expand memory 32 k-byte RW DIO1-DIO8 VM SM3517 VA EO1 EO2 Individual output KI2-KI7 KI1 XCR VCC TEST RESET XI XO BZ VCC ON Key + - RESET VCC Key matrix S1-S6 S53-S60 (MAX. 84-key) Key 3V Buzzer -2- SM3517 100 QFP (QFP100-P-1420) 0.15 0.05 80 (2.4) 81 51 0.65TYP. 50 18.8 0.4 14.0 0.2 100 (2.4) 1 (2.4) 20.0 24.8 0.2 0.4 30 (2.4) 0.15 31 M 0.3 0.1 1.3 0.2 2.75 0.2 0.1 0.1 Package base plane (22.98) -3- (16.98) 0.15 |
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