W51300 Просмотр технического описания (PDF) - Winbond

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W51300

FLASH VR CONTROLLER

Winbond 

W51300

FLASH VR CONTROLLER

GENERAL DESCRIPTION

The W51300 is a voice recorder IC which contains A/D and D/A converters to digitize and reproduce

voice signals. An anti-alias/smoothing filter, AGC circuit, MIC preamplifier, and speaker power

amplifier are used to smooth the input voice and set the output voice to a certain volume while

minimizing the number of extra components needed. The recording time depends on the size of the

external memory.

The external memory is a nonvolatile flash EPROM that stores the voice data while power is switched

off. This external memory provides a great advantage in cartridge or greeting card applications. A

maximum of 16 Mbit of memory can be cascaded. In addition, the W51300's flexible segmentation,

selective recording/erasing, forward and backward move functions, and MCU interface provide

flexibility to meet the needs of a wide variety of applications.

FEATURES

• Modified ADM algorithm with 24 KHz sampling frequency when ROSC = 620 KΩ

• Operates with Winbond serial flash EPROM

• Built-in A/D, D/A, MIC preamplifier, AGC circuit, anti-alias/smoothing filter, speaker power amplifier,

and LED indicator

• 8 input trigger pins (L_REC, E_PLAY, L_PLAY, FWD, BWD, STOP, ERASE, RESET) debounced

to ensure noise-free operations

• Single/multi-voice segment operation, normal/CPU mode selected by pin option (SMODE, CPU)

• Cascadable for longer duration by directly cascading serial flash EPROMs (maximum 16 Mbits)

• Maximum 63 voice segments available in multi-segment operation

• Provides selective record, erase, and playback functions

• Provides low power detection circuit at 3.0V

• Provides both speaker direct drive and speaker current output (5 mA)

• Low power consumption:

− Operating: 15 mA (typ.)

− Standby: 0.01 µA (typ.)

Publication Release Date: April 1997

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Revision A2

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