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SM8230AS датащи(PDF) 5 Page - NEC |
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SM8230AS датащи(HTML) 5 Page - NEC |
5 / 8 page SM8230A SEIKO NPC CORPORATION —5 FUNCTIONAL DESCRIPTION Serial Interface Data is transferred in 16-bit units by writing commands over a 3-line serial interface comprising OE (output enable), SCL (serial clock) and SD (serial data input). Note that data transfer is unidirectional; no data is output from the SM8230A. The operating sequence is described below. Command transfer Data can be transferred when OE goes LOW. Data is transferred in 16-bit units in sync with the rising edge of the SCL clock. Note that when OE is LOW and both SD and SCL are tied LOW, the current consumption is less than 1µA (standby mode). The internal states are undefined when power is first applied. DTMF analog signal output Data transfer stops and DTMF analog signal output starts when OE goes HIGH, as shown in figure 2. Figure 1. Serial interface connection example Figure 2. Serial data transfer timing (Clock) Port Serial Clock Serial Data CPU CLK OE SCL SD BZH BZL R Piezo Buzzer SM8230 SCL SD BZL 12 345 678 9 10 11 12 13 14 15 16 MSB LSB BZH OE 0 0 CK1 CK0 FH1 FH0 GH3 GH2 GH1 GH0 FL1 FL0 GL3 GL2 GL1 GL0 Piezo buzzer output Serial data transmission Low frequency group output High frequency group output b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 |
Аналогичный номер детали - SM8230AS |
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Аналогичное описание - SM8230AS |
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