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參數(shù)資料
| 型號： | AP8842 |
| 廠商： | Aplus Integrated Circuits Inc. |
| 英文描述： | 42 sec VOICE OTP |
| 中文描述： | 42秒語音檢察官辦公室 |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 150K |
| 代理商： | AP8842 |
Integrated Circuits Inc.
a
P8842
42 sec VOICE OTP
Ver 1.3
2
Features
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42 Sec Voice Length at 6 KHz
Combination of voice building blocks
extends the duration of playback
Voice data re-use saves memory space
Maximum 30 voice groups
8 trigger pins, S1 to S8 for the 8 voice
groups ( group1 ~ 8 )
SBT for sequential playblack the rest of
voice groups & for CPU mode trigger
S1 to S5 in CPU trigger mode to trigger
all 30 voice groups
Holdable, Unholdable, Edge, Level
triggering option
Debounce time : 22ms for both Key and
CPU mode @ 6K sampling rate
IRP interrupt pin for master reset
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3 programmable Outputs for STP stop
pulse, BUSY and LEDs
Built-in oscillator with a single external
resistor to determine the sampling rate
Built-in D/A converter, EPROM
ADPCM data compression provides
high sound quality
Optional POP noise elimination function
C
OUT
pin drives speaker with a transistor
V
OUT1
and V
OUT2
drives buzzer or
speaker directly
Auto-power down
2.7V – 3.8V single power supply
operation
Low standby current (<5uA at 3V)
Development Tools Support
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General Description
a
P8842
is a high quality voice synthesizer capable of varying playback duration. A proprietary
ADPCM algorithm is used. The audio message is stored in a 1M bits on-chip EPROM which can
store up to 42 seconds of voice data at 6 KHz sample rate.
The
a
P8842
eliminates the need of complicated circuitry in voice playback but still achieves high
voice quality for different kind of sounds. Combinations in sections achieve longer playback duration.
A pair of PWM output pins, V
OUT1
and V
OUT2
provides direct drive to buzzer or speaker.
A current output pin, C
OUT
, enables the device to drive a speaker through a low cost NPN transistor.
No complex filtering or amplifier circuit is needed. An automatic ramp-down function eliminates
undesired noise at the end of playback.
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