W51300 Datasheet, PDF (1/12 Pages) Winbond – FLASH VR CONTROLLER

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