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AT89C5132-ROTIL Datasheet(PDF) 17 Page - ATMEL Corporation

Part # AT89C5132-ROTIL
Description  USB Microcontroller with 64K Bytes Flash Memory
PDF  182 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5132-ROTIL Datasheet(HTML) 17 Page - ATMEL Corporation

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4173E–USB–09/07
AT89C5132
7.
Program/Code Memory
The AT89C5132 implements 64K Bytes of on-chip program/code memory. Figure 7-1 shows the
split of internal and external program/code memory spaces depending on the product.
The Flash memory increases EPROM and ROM functionality by in-circuit electrical erasure and
programming. The high voltage needed for programming or erasing Flash cells is generated on-
chip using the standard VDD voltage, made possible by the internal charge pump. Thus, the
AT89C5132 can be programmed using only one voltage and allows in application software pro-
gramming. Hardware programming mode is also available using common programming tools.
See the application note ‘Programming T89C51x and AT89C51x with Device Programmers’.
The AT89C5132 implements an additional 4K Bytes of on-chip boot Flash memory provided in
Flash memory. This boot memory is delivered programmed with a standard bootloader software
allowing In-System Programming (ISP). It also contains some Application Programming Inter-
faces (API), allowing In Application Programming (IAP) by using user’s own bootloader.
Figure 7-1.
Program/Code Memory Organization
7.1
Flash Memory Architecture
As shown in Figure 7-2 the AT89C5132 Flash memory is composed of four spaces detailed in
the following paragraphs.
Figure 7-2.
AT89C5132 Memory Architecture
4K Bytes
Boot Flash
FFFFh
F000h
0000h
64K Bytes
Code Flash
FFFFh
F000h
FFFFh
64K Bytes
Flash Memory
0000h
Hardware Security
User
4K Bytes
Flash Memory
FFFFh
F000h
Boot
Extra Row



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