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ML2215 Datasheet(PDF) 4 Page - OKI electronic componets |
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ML2215 Datasheet(HTML) 4 Page - OKI electronic componets |
4 / 26 page FEDL2215-01 1Semiconductor ML2215 4/26 PIN DESCRIPTIONS Pin Symbol Type Description 17 (19) RESET l “L” input to this pin turns the LSI into standby mode. At this point, output from the AOUT pin rises up to V DD level, having the LSl initialized internally. By “H” input to the pin the AOUT output returns to 1/2 V DD level. 2 (4) NAR O This pin outputs a signal showing empty/full status of the Phase Address Latch Resister. “H” level indicates the register is empty, and thus the LSI is ready to accept serial data input. At powering up, the pin outputs “H level”. 3 (5) BUSY O Output “L” level while output signal is present either at the AOUT or MD pin. At powering up, the pin outputs “H” level. 4 (6) MD O Music output pin 7 (7) V REF I DAC reference pin. Leave this pin open when not used. 9 (9) AOUT O Analog output pin 8 (8) GND — Ground pin 12 (16) CLK l External clock input pin 18 (20) Sl l Serial clock input pin 19 (21) SD l Serial data input pin. Input a phrase code corresponding to a phrase address through this pin. 13 (17) ST l This pin is used when 3-pin interfacing is selected. When 3-pin inter-facing is selected, input to the SD and Sl pins is valid while the ST pin being held “L”. When this pin is at “H” level, speech synthesis is started. When 2-pin interfacing is selected, connect this pin to GND. Mask option allows the user to select either 3-pin interfacing or 2-pin interfacing. 11 (15) V DD — Power supply pin. Insert 0.1 µF or larger bypass capacitor between this pin and the GND pin. * 20-pin plastic SSOP (24-pin plastic SOP) |
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