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MSM9802 bảng dữ liệu(PDF) 14 Page - OKI electronic componets

tên linh kiện MSM9802
Giải thích chi tiết về linh kiện  Voice Synthesis IC with Built-in Mask ROM
PDF  52 Pages
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nhà sản xuất  OKI [OKI electronic componets]
Trang chủ  http://www.oki.com
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MSM9802 bảng dữ liệu(HTML) 14 Page - OKI electronic componets

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MSM9802/03/05-xxx
¡ Semiconductor
FUNCTIONAL DESCRIPTION
1. Playback Code Specification
The user can specify a maximum of 56 phrases. Table 1.1 shows the settings by the A2-A0 and
SW2-SW0 pins.
Table 1.1 User-specified Phrases
A2-A0
Code Details
000
111
Inhibit code
User-specified phrase
(56 phrases)
SW2-SW0
000
001
111
Figure 3.1 SW Input Interface Single-Phrase Playback Timing
A2-A0 (I)
SW2-SW1 (I) "L"
SW0 (I)
BUSY (O)
AOUT (O)
tw(SW)
Oscillation start
tCHA
2. Pull-up/Pull-down Resistor
The RESET and RND pins have internal pull-up resistors and the SW2-SW0 pins have internal
pull-down resistors.
3. Stand-alone Mode
In a stand-alone mode, the SW input interface function and the random playback function can
be used.
3.1 SW input interface
With the SW input interface, speech synthesis starts when the state of the SW2-SW0 pins has
changed. To prevent chattering, the address data is latched 16 ms (tCHA) after the state of SW2-
SW0 has changed. Voice synthesis does not start if the state of the A2-A0 pins has changed. Set
the RND pin to "H" level if the random playback function is not used.
Set the A2-A0 pins to "L" level at power-on or at reset.
The SW input interface is effective when the MSM9802/03/05 is operated using a push-button
switch. Voice synthesis starts when an address is changed by pressing the push-button switch.
If the push-button switch is released during playback, then playback stops after the current
phrase is completed.



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