2. This evaluation board/kit or development tool is intended for use by an electronics engineer and is not a consumer product. The user should use it properly and in a safe manner. Seiko Epson dose not assume any responsibility or liability of any kind of damage and/or fire coursed by the use of it. The user should cease to use it when any abnormal issue occurs even during proper and safe use.
Appendix B Parts List ....................7 Appendix C Recommended circuit for Buzzer connection ........8 Recommended circuit for Electromagnetic buzzer connection ..........8 Recommended circuit for Piezoelectric buzzer connection ..........9 Revision History ......................10 Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)
Overview S5U1C31D51T2 (S1C31D51 Buzzer Evaluation Board) is a BUZZER evaluation board for buzzer speech playback function using S1C31D51, a single-chip microcontroller manufactured by Seiko EPSON. This board can be used in combination with S1C31D51 evaluation board (S5U1C31D51T1). This board implements circuits that can drive an electromagnetic buzzer and a piezoelectric buzzer by output signal from S1C31D51.
Please refer to Appendix for the resistance value and power supply adjustment when using a buzzer other than the included buzzer. Table 3.3.1 Connectors Connector: J1/J2/J3 To connect Electromagnetic Buzzer To connect Piezoelectric Buzzer To supply external power (SD160709 made by TDK Corporation) (PS1740P02CE made by TDK Corporation) Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)
1 - 2 Open 1 - 2 Open Others Short Others Short 21-22 Open 43-44 Open 23-24 Open 45-46 Open 43-44 Open Others Short Others Short OPEN Figure 3.4.1 Jumper settings for S5U1C31D51T1 connected with S5U1C31D51T2 Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)
Resistor for Resistor for Push switch Use of Discrete circuit of Discrete circuit of (SW4/5/6/7/8/9/10) Piezoelectric piezoelectric electromagnetic buzzer buzzer buzzer Figure 4.1.1 Layout of Main Parts for running of the demo software Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)
In the demo software described in Chapter 4, this circuit avoids (a)/(b) becoming Hi-Z state by Pxx=L(VDD1=ON) before the start of speech playback and Pxx=H(VDD1=OFF) after the end of playback to prevent a large current. Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)
Table C.1.1 Recommended resistance for supplied power and target current Target R5/R6 Target R5/R6 VDD2 (V) VDD2 (V) Current(mA) (Ohm) (Ohm) Current(mA) (Ohm) (Ohm) 1.8 k 3.3 k 1.0 k 1.5 k 2.7 k Seiko Epson Corporation S5U1C31D51T2 Manual (Rev.1.0)