Datasheet > ISD14B80

ISD14B80

更新时间： 2022-02-26 12:00:05

品牌	Logo	应用领域
新唐 - NUVOTON		/
页数	文件大小	规格书
27页	993K
描述
SINGLE-CHIP, MULTIPLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE

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ISD14B80 数据手册

ISD14B00

PIN NAME

PIN # I / O

FUNCTION

M¯¯7: When Direct Mode is active, low active operation on 7^thMessage.

Internal pull-up & debounce existed.

E3/M¯¯8

E3^[1]: In Address Mode, End Address Bit 3.

M¯¯8: When Direct Mode is active, low active operation on 8^thMessage.

Internal pull-up & debounce existed.

V_SSP2

SP-

Ground: Ground for negative PWM speaker driver.

SP-: Negative signal of the differential Class-D PWM speaker outputs. This

output, together with the SP+, is used to drive an 8Ω speaker directly.

Speaker Power Supply: Power supply for PWM speaker drivers.

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 8Ω speaker directly.

Or,

V_CCP

SP+

AUX out: single-ended voltage output.

V_SSP1

AGC

Ground: Ground for positive PWM speaker driver.

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 (V_SSA) provides maximum gain to the

preamplifier circuitry. Conversely, connecting this pin to the power supply

(V_CCA) provides minimum gain to the preamplifier circuitry.

MIC+ / AnaIn

MIC+: Non-inverting input of the differential microphone signal.

AnaIn: When F¯T¯ 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

Rosc

MIC-: Inverting input of the differential microphone signal. While F¯T¯ is

enabled, MIC- pin is disabled and must be floated.

Oscillator Resistor: Connect an external resistor from this pin to V_SSAto

select the internal sampling frequency.

V_CCA

¯L¯E¯D¯

Analog Power Supply: Power supply for analog circuits.

LED output: During recording, this output is Low. Also, ¯L¯E¯D¯ pulses Low

momentarily at the end of playback.

¯P¯la¯y¯E¯/FMC2

¯P¯la¯y¯E¯: 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.

¯R¯E¯C¯/¯R¯/P

¯R¯E¯C¯: 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.

Publication Release Date: Jan 19, 2009

- 7 -

Revision 0.30

1...4 5 678 9 10...27

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