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PDF W51300 Data sheet ( Hoja de datos )
| Número de pieza | W51300 | |
| Descripción | FLASH VR CONTROLLER | |
| Fabricantes | Winbond | |
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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
- 1 - Revision A2
1 page  
W51300
3. Selective Erase
When the system is operated in multi-segment mode, voice segments can be erased selectively
instead of sequentially. Users can play the voice segments one by one until they reach the segment
to be erased, and then stop playing and press the ERASE key. The current voice segment will be
erased and the CAP value will be changed to the previous voice segment. The LED will light during
the erasing procedure to indicate that the system is busy, and all input triggers will be disabled except
for RESET.
4. Chip Erase
Pressing and holding the RESET key for more than two seconds will clear all data in the flash
EPROM.
5. Function Keys
In normal mode, eight input trigger pins with built-in debounce circuitry are used to operate the
W51300. These eight pins are described below.
L_REC
L_REC is an active-high, level-triggered recording pin with an internal 500 KΩ pull-low resistor. When
this pin goes high, the device starts recording and continues until this pin is released or the end of the
memory space is reached. When the memory or segment is full, this pin is invalid.
E_PLAY
E_PLAY is an active-high, edge-triggered playback pin with an internal 500 KΩ pull-low resistor. In
single segment operation, the toggle stop function is enabled. This means a debounced rising edge
on E_PLAY during voice playing will stop the ongoing playback operation immediately. In multi-
segment operation, the toggle skip function is enabled. This means a debounced rising edge on
E_PLAY during voice playing will cause the device to skip to the next voice segment. A rising edge
on this pin while the last voice segment is being played will cause the device to skip to the first voice
segment. This function is useful for fast scanning through a series of messages.
L_ PLAY
L_PLAY is an active-high, level-triggered playback pin with an internal 500 KΩ pull-low resistor. The
current voice segment will be played back when this pin is pressed. A concatenated loop playing
function is enabled to link all messages in a row and loop back to the first message when the last
message is reached.
STOP
This is an active-high, edge-triggered stop pin with an internal 500 KΩ pull-low resistor. Pressing this
pin immediately stops playback of the ongoing message. This pin is enabled only while a voice is
playing.
ERASE
ERASE is an active-high, edge-triggered erase pin with an internal 500 KΩ pull-low resistor. Pressing
this pin erases the current voice segment without affecting the content of the other segments.
FWD
This is an active-high, edge-triggered forward pin with an internal 500 KΩ pull-low resistor. Pressing
this pin for less than 1 second moves the CAP from the current voice segment to the next one.
Pressing this pin for more than 1 second moves the CAP from the current voice segment to the last
one.
Publication Release Date: April 1997
- 5 - Revision A2
5 Page 
W51300
TYPICAL APPLICATION CIRCUIT (for reference only)
VDD
R2
C2
R3
Rosc
C3 Cd
MIC C4
R1
R5
C1
8/16 Ω
SPEAKER
OSC
W51300
L_REC
VCCD
E_PLAY
VCCA
L_PLAY
RESET
MIC
MICREF
FWD
BWD
STOP
ERASE
AGC
VSSD
SMODE
CPU
VSSA
LED
SPK+
SPK-
ADDR
DATA
CLK
MODE
CTRL
EOP
R4
W55Fxx
ADDR
DATA
CLK Vcc
MODE VSS
CTRL
EOP
Component List:
R1 = 470 KΩ
R2 = 1 K Ω
R3 = 8.2 KΩ
R4 = 220 Ω
Rosc = 620 KΩ
C1 = 4.7 µF
C2 = 2.2 µF
C3 = C4 = 0.22 µF
R5 = 5.1 K Ω
Cd = 0.1 µF
Cd
Notes:
1. R1 and C1 can be adjusted for different AGC attack time and release time.
2. Set C3 = C4 to reduce ground noise.
- 11 -
Publication Release Date: April 1997
Revision A2
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet W51300.PDF ] | |
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