ATWEBDVK-02WC Atmel, ATWEBDVK-02WC Datasheet - Page 99
ATWEBDVK-02WC
Manufacturer Part Number
ATWEBDVK-02WC
Description
KIT DEV TCP/IP AT89C51RD2 WEBCAM
Manufacturer
Atmel
Series
@Webr
Datasheet
1.ATWEBDVK-02RC.pdf
(137 pages)
Specifications of ATWEBDVK-02WC
Main Purpose
*
Embedded
*
Utilized Ic / Part
AT89C51RD2
Primary Attributes
*
Secondary Attributes
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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24.6.3
4235K–8051–05/08
Functional Description
Specific Protocol
External Host with
Communication
Figure 24-3. Bootloader Functional Description
On the above diagram, the on-chip bootloader processes are:
The purpose of this process is to manage the communication and its protocol between the on-
chip bootloader and a external device. The on-chip ROM implements a serial protocol (see sec-
tion “Bootloader Protocol”). This process translate serial communication frame (UART) into
Flash memory access (read, write, erase, etc.).
Several Application Program Interface (API) calls are available for use by an application pro-
gram to permit selective erasing and programming of Flash pages. All calls are made through a
common interface (API calls), included in the ROM bootloader. The programming functions are
selected by setting up the microcontroller’s registers before making a call to a common entry
point (0xFFF0). Results are returned in the registers. The purpose on this process is to translate
the registers values into internal Flash Memory Management.
This process manages low level access to Flash memory (performs read and write access).
• ISP Communication Management
• User Call Management
• Flash Memory Management
ISP Communication
Management
Flash Memory
Management
Memory
Flash
Management (API)
User Call
AT89C51RD2/ED2
Application
User
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