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PDF SNC12168 Data sheet ( Hoja de datos )
| Número de pieza | SNC12168 | |
| Descripción | One Channel Speech Controller | |
| Fabricantes | SONiX | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SNC12168 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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SNC12168
One Channel Speech Controller
===================== CONTENTS =====================
1. INTRODUCTION............................................................................................................3
2. FEATURES ......................................................................................................................3
3. PIN ASSIGNMENT.........................................................................................................3
4. BLOCK DIAGRAM ........................................................................................................4
5. FUNCTION DESCRIPTIONS .......................................................................................4
5.1 OSCILLATOR ...............................................................................................................4
5.2 ROM ..........................................................................................................................4
5.3 RAM ..........................................................................................................................5
5.4 POWER DOWN MODE..................................................................................................5
5.5 SAMPLING RATE COUNTER .........................................................................................5
5.6 I/O PORTS...................................................................................................................5
5.7 PUSH-PULL OUTPUT ...................................................................................................6
5.8 WATCH DOG TIMER...................w.w.w...D.a.ta.S..he.e.t.4.U..c.o.m.................................................................6
5.9 IR FUNCTION ..............................................................................................................6
6. ABSOLUTE MAXIMUM RATING ..............................................................................6
7. ELECTRICAL CHARACTERISTICS .........................................................................7
8. APPLICATION CIRCUIT .............................................................................................8
Ver: 1.4
1 March 17, 2005
1 page  
SNC12168
One Channel Speech Controller
5.3 RAM
SNC12168 contains 128 nibble RAM (128 x 4-bits). The 128 nibble RAM is divided
into eight pages (page 0 to page 7, 16 nibble RAM on each page). In our
programming structure, users can use the instructions, PAGE n (n=0 to 7) to switch
and indicate the RAM page. Besides, users can use direct mode, M0 ~ M15 in the
data transfer type instructions, to access all 16 nibbles of each page
5.4 Power Down Mode
“End” instruction makes the IC entering into Stop Mode will stop the system clock for
power savings (<3uA @VDD=3V and <6uA @VDD=4.5V.) Any valid data transition
(L H or H L) occurring on any IO pin can be used to start the system clock and
return to normal operating mode.
5.5 Sampling Rate Counter
The unique sampling rate counter is designed in voice channel to be able to play
diverse voices at different sample playing rates. The playing rate can be adaptively set
up among from the wide ranges of 2.5KHz to 20KHz. This architecture yields a
high-quality voice synthesis that sounds very close to its original source when played
through the same amplifier and speaker circuitry.
5.6 I/O Ports
There are four 4-bit I/O ports P1, P2, P3, and P6. Any I/O can be individually
programmed as either input pull low or output. Any valid data transition (H L or
L H) of P1, P2, P3, and P6 can reactivate the chip when it is in power-down stage.
Port Data
Port Status
PAD
Weak
To Internal Data Bus
Read Control
I/O Port Configuration
Note:
(1) Weak N-MOS can serve as pull-low resistor.
(2) The driving/sink current of P3.3 & P3.2 is up to 8mA/16mA
Ver: 1.4
5 March 17, 2005
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SNC12168.PDF ] | |
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