DM300027 Microchip Technology, DM300027 Datasheet - Page 50

• Manufacturer Part Number: DM300027
• Description: BOARD DEV STARTER PIC24 28-PIN
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM300027

• Contents: Board, Cables, CD, Sample Part
• Processor To Be Evaluated: dsPIC30F/PIC24F/dsPIC33F
• Data Bus Width: 16 bit
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Core Architecture: PIC, DsPIC
• Core Sub-architecture: PIC24, DsPIC30, DsPIC33
• Silicon Core Number: PIC24F, DsPIC30F, DsPIC33F
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: dsPIC30F/33F and PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Summary
Application note AN1045 covers the implementation of a
memory disk drive file system on Microchip’s 16-bit families.
This memory disk drive file system allows a designer to
easily implement a removable Flash-based media card of
up to 2 GB into their application. Applications that require
data logging or retrieval of large blocks of data such as
fonts or bit maps are often taking advantage of removable
Flash-based memory cards. The memory disk drive file
system library is modular and provided in “C” source to
easily integrate into any application.
Capabilities of this Application Solution
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Summary
Conventionally, lock-in amplifiers use complicated (and
expensive) analog circuitry to perform the phase sensitive
detection and filtering. However, modern DSCs, such as the
dsPIC30F and dsPIC33F families, can be used to remove
large amounts of the analog circuitry by performing the
necessary operations in software. This capability provides a
number of additional benefits including increased reliability,
resistance to temperature and aging effects, and the
ease with which the system can be modified in the field.
By using the built-in signal processing capabilities of the
dsPIC33F, it is possible to perform high-speed, high-accuracy
measurements on sensors such as strain gauges. The same
technique can be applied to other noisy systems such as
capacitive sensors or the measurement of modulated light
levels.
File I/O Functions Using Memory Disk Drive
File System Library
Application Note: AN1045 • Ready-to-Use Solution
Implementing Digital Lock-In Amplifiers Using a dsPIC® DSC
Application Note: AN1115 • Ready-to-Use Solution
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Developed based on ISO/IEV9293 specification
Known as FAT16 File System used on early DOS operating
systems by Microsoft® Corporation
Most popular files system with SD cards, CF cards and
USB thumb drives
Provides directory manipulation support
Provides file/directory search support
Proven Software Source Code
Proven Software Source Code
Software Solutions and Tools for the 16-bit and 32-bit Designer
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Capabilities of this Application Solution
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PICtail™ Plus Daughter Board
for SD and MMC Cards
(AC164122)
Easy-to use standard I/O style functions
Available free for use on Microchip microcontrollers
Portable across PIC18 and PIC24 MCUs and dsPIC® DSC
devices
Supports up to 2 GB
Useful for measuring small signals
Avoids noise introduced at DC and low frequencies
Measures signal changes caused by devices with complex
impedances, such as capacitive sensors
Signal processing is performed in the digital domain
Minimum external components