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S1D13305D00A Datasheet(PDF) 11 Page - Epson Company |
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S1D13305D00A Datasheet(HTML) 11 Page - Epson Company |
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11 / 94 page  S1D13305 Series EPSON 5 Technical Manual 5.2. Pin Functions 5.2.1. Power supply 5.2.3. Microprocessor interface 5.2.2. Oscillator Pin Name Function VDD 2.7 to 5.5V supply. This may be the same supply as the controlling microprocessor. VSS Ground Note: The peak supply current drawn by the S1D13305 series may be up to ten times the average supply current. The power supply impedance must be kept as low as possible by ensuring that supply lines are sufficiently wide and by placing 0.47 µF decoupling capacitors that have good high-frequency response near the device’s supply pins. Pin Name Function XG Crystal connection for internal oscillator (See section 13). This pin can be driven by an external clock source that satisfies the timing specifications of the EXT φ0 signal (See section 6.3.6). XD Crystal connection for internal oscillator. Leave this pin open when using an external clock source. Pin Name Function D0 to D7 Tristate input/output pins. Connect these pins to an 8- or 16-bit microprocessor bus. Microprocessor interface select pin. The S1D13305 series supports both 8080 family processors (such as the 8085 and Z80®) and 6800 family processors (such as the 6802 and 6809). SEL1 SEL2* Interface A0 RD WR CS 0 0 8080 family A0 RD WR CS 1 0 6800 family A0 E R/W CS Note: SEL1 should be tied directly to VDD or VSS to prevent noise. If noise does appear on SEL1, decouple it to ground using a capacitor placed as close to the pin as possible. SEL1, SEL2 PIN DESCRIPTION |
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