SM1125 Просмотр технического описания (PDF) - Nippon Precision Circuits

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SM1125

Multimelody IC for Pagers

Nippon Precision Circuits  

SM1125 series

Playback timing diagrams

Playback start

Playback starts 128 ± 1 OSC clock cycles after ST goes HIGH.

Invalid

Data

Valid

Data

SI

MSB

LSB

SC

ST

CLK

*Internal

Clock

MTO

128 1 Clock

Figure 6. Start timing

;;;;;;;;;;;;

Playback stop

Playback stops immediately when ST goes LOW.

In external clock input versions, the IC internal clock also stops when ST goes LOW, regardless of whether or

not there is a clock input signal on pin OSC.

In built-in RC oscillator versions, the oscillator also stops when ST goes LOW.

ST

CLK

*Internal

Clock

MTO;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Figure 7. Stop timing

SEIKO NPC CORPORATION —7

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