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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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MSM9802 Scheda tecnica(PDF) 6 Page - OKI electronic componets |
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MSM9802 Scheda tecnica(HTML) 6 Page - OKI electronic componets |
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6 / 52 page  6/51 MSM9802/03/05-xxx ¡ Semiconductor PIN DESCRIPTIONS Symbol Type Description The IC enters the standby state if this pin is set to "L" level. At this time, oscillation stops and AOUT drives a current of 0mA and becomes GND level, then the IC returns to the initial state. Apply a "L" pulse upon power-on. This pin has an internal pull-up resistor. RESET I Outputs "L" level while voice is being played back. At power-on, this pin is at "H" level. BUSY O XT/RC switching pin. Set to "H" level if ceramic oscillation is used. Set to "L" level if RC oscillation is used. XT/CR I Microcontroller interface/stand-alone mode switching pin. Set to "L" level if the MSM9802/03/05 is used in stand-alone mode. CPU/STD I Volume setting pin. If this pin is set to GND level, the maximum current is forced in. If this pin is set to VDD level, the minimum current is forced in. A pull-down resistor of approx. 10 W is internally connected to this pin during operation. VREF I Voice output pin. The voice signals are output as current changes. In standby state, this pin drives a current of 0 mA and becomes GND level. AOUT O Ground pin. GND — Power supply pin. Insert a bypass capacitor of 0.1 mF or more between VDD and GND pins. VDD — Ceramic oscillator connection pin when ceramic oscillation is selected. RC connection pin when RC oscillation is selected. Input from this pin if external clock is used. OSC1 I Ceramic oscillator connection pin when ceramic oscillation is selected. RC connection pin when RC oscillation is selected. Leave this pin open if external clock is used. Outputs "L" level in standby state. OSC2 O Leave this pin open when ceramic oscillation is used. RC connection pin when RC oscillation is selected. Outputs "H" level in standby state when RC oscillation is selected. OSC3/TEST O Random playback starts if RND pin is set to "L" level. Fetches addresses from random address generation circuit in the IC at fall of RND. Set to "H" level when the random playback function is not used. This pin has internal pull-up resistor. RND I DIP 4 SOP 17 SSOP 21 620 25 518 23 14 7 8 823 29 924 30 722 28 10 1 1 11 2 2 12 3 3 13 5 6 15810 Pin |
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