DSPIC33FJ128GP708-I/PT

Manufacturer Part NumberDSPIC33FJ128GP708-I/PT
DescriptionIC DSPIC MCU/DSP 128K 80TQFP
ManufacturerMicrochip Technology
SeriesdsPIC™ 33F
DSPIC33FJ128GP708-I/PT datasheets
 


Specifications of DSPIC33FJ128GP708-I/PT

Program Memory TypeFLASHProgram Memory Size128KB (128K x 8)
Package / Case80-TFQFPCore ProcessordsPIC
Core Size16-BitSpeed40 MIPs
ConnectivityCAN, I²C, IrDA, LIN, SPI, UART/USARTPeripheralsAC'97, Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o69Ram Size16K x 8
Voltage - Supply (vcc/vdd)3 V ~ 3.6 VData ConvertersA/D 24x10b/12b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
ProductDSCsData Bus Width16 bit
Processor SeriesDSPIC33FCoredsPIC
Maximum Clock Frequency40 MHzNumber Of Programmable I/os69
Data Ram Size16 KBMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT3rd Party Development Tools52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By SupplierPG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DV164033Minimum Operating Temperature- 40 C
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use With876-1001 - DSPIC33 BREAKOUT BOARDDM300024 - KIT DEMO DSPICDEM 1.1DV164033 - KIT START EXPLORER 16 MPLAB ICD2MA330012 - MODULE DSPIC33 100P TO 84QFPMA330011 - MODULE DSPIC33 100P TO 100QFPDM300019 - BOARD DEMO DSPICDEM 80L STARTERDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164328 - MODULE SKT FOR 80TQFPDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
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11.13 Speech Encoding/Decoding
Library
The Speech Encoding/Decoding Library performs toll-
quality voice compression and voice decompression.
The library is based on a modified version of the Speex
speech encoder/decoder source code and features a
16:1 compression ratio. It samples speech at 8 kHz and
compresses it to a data rate of 8 kbps. Storing
compressed
speech
for
playback
approximately 1 KB of memory for each second of
speech. The library is especially suitable for the
following voice-based applications:
• Answering Machines
• Building and Home Safety Systems
• Intercoms
• Smart Appliances
• Voice Recorders
• Walkie-Talkies
• Any Application using Message Playback
A PC-based speech encoder utility program allows you
to create your own encoded speech files for playback.
Encoded speech files are made from either a PC
microphone or existing WAV file. Once you create the
encoded speech files, they are added to your MPLAB
C30 project, just like a regular source file, and built into
your application. The speech encoder utility allows you to
select four target memory areas to store your speech file:
program Flash memory, RAM and external Flash
memory. External Flash memory allows you to store
many minutes of speech (1 minute of speech requires
60 KB) and it is supported through a general purpose I/O
port.
© 2005 Microchip Technology Inc.
Key features of the Speech Encoding/Decoding Library
include:
• PESQ-based Mean Opinion Score: 3.7-4.2
(out of 5.0)
• Code Excited Linear Prediction (CELP) based
coding
• 2 Analog Input Interfaces – codec or on-chip ADC
• 2 Analog Output Interfaces – codec or
requires
on-chip PWM
• Optional Voice Activity Detection
• Storing compressed speech requires 1 KB of
memory per second of speech
• Royalty-free (only one-time license fee)
• Full compliance with Microchip MPLAB C30
C Compiler Language Tools
• “dsPIC30F Speech Encoding/Decoding Library
User’s Guide”
• Designed to run on dsPICDEM 1.1 General
Purpose Development Board (DM300014)
Preliminary
dsPIC33F
DS70155C-page 55