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ISD14B00 データシート(PDF) 7 Page - Nuvoton Technology Corporation

部品番号 ISD14B00
部品情報  SINGLE-CHIP, MULTIPLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE
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メーカー  NUVOTON [Nuvoton Technology Corporation]
ホームページ  http://www.nuvoton.com
Logo NUVOTON - Nuvoton Technology Corporation

ISD14B00 データシート(HTML) 7 Page - Nuvoton Technology Corporation

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ISD14B00
Publication Release Date: Jan 19, 2009
- 7 -
Revision 0.30
PIN NAME
PIN #
I / O
FUNCTION
M7
¯¯ : When Direct Mode is active, low active operation on 7
th Message.
Internal pull-up & debounce existed.
E3/M8
¯¯
11
I
E3
[1] : In Address Mode, End Address Bit 3.
M8
¯¯ : When Direct Mode is active, low active operation on 8
th Message.
Internal pull-up & debounce existed.
VSSP2
12
I
Ground: Ground for negative PWM speaker driver.
SP-
13
O
SP-: Negative signal of the differential Class-D PWM speaker outputs. This
output, together with the SP+, is used to drive an 8
Ω speaker directly.
VCCP
14
I
Speaker Power Supply: Power supply for PWM speaker drivers.
SP+
15
O
Depending on the derivative selected, it could be:
SP+: Positive signal of the differential Class-D PWM speaker outputs. This
output, together with the SP-, is used to drive an 8
Ω speaker directly.
Or,
AUX out: single-ended voltage output.
VSSP1
16
I
Ground: Ground for positive PWM speaker driver.
AGC
17
I
Automatic Gain Control (AGC): The AGC adjusts the gain of the
preamplifier dynamically to compensate for the wide range of microphone
input levels. The AGC allows the full range of signals to be recorded with
minimal distortion. The AGC is designed to operate with a nominal capacitor
of 4.7 µF connected to this pin.
Connecting this pin to ground (VSSA) provides maximum gain to the
preamplifier circuitry. Conversely, connecting this pin to the power supply
(VCCA) provides minimum gain to the preamplifier circuitry.
MIC+ / AnaIn
18
I
MIC+: Non-inverting input of the differential microphone signal.
AnaIn: When FT
¯¯ is selected, the MIC+ input is configured to a single-
ended input with 1Vp-p maximum input amplitude and feed-through to the
speaker outputs.
MIC- / NC
19
I
MIC-: Inverting input of the differential microphone signal. While FT
¯¯ is
enabled, MIC- pin is disabled and must be floated.
Rosc
20
I
Oscillator Resistor: Connect an external resistor from this pin to VSSA to
select the internal sampling frequency.
VCCA
21
I
Analog Power Supply: Power supply for analog circuits.
LED
¯¯¯¯
22
O
LED output: During recording, this output is Low. Also, LED
¯¯¯¯ pulses Low
momentarily at the end of playback.
PlayE
¯¯¯¯¯/FMC2
23
I
PlayE
¯¯¯¯¯: In Address Mode, low active input, edge-trigger playback from start
to end addresses & toggle on-off. Debounce & internal pull-up existed.
FMC2: When Direct Mode is active, FMC2, together with FMC1 & FMC3,
setup various fixed-message configurations.
REC
¯¯¯¯/ R
¯¯/P
24
I
REC
¯¯¯¯: In Address Mode, level-hold (after 1 sec holding) or edge-trigger
(toggle on-off), low active, recording from start to end addresses. Debounce
& internal pull-up existed.


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