ISD14B00 datasheet(7/27 Pages) NUVOTON

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

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7 / 27 page

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.

同様の部品番号 - ISD14B00

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