AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 17

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

7. Program/Code Memory
7.1
4173E–USB–09/07
Flash Memory Architecture
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 V
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.
As shown in Figure 7-2 the AT89C5132 Flash memory is composed of four spaces detailed in
the following paragraphs.
Figure 7-2.
FFFFh
0000h
Program/Code Memory Organization
AT89C5132 Memory Architecture
Flash Memory
64K Bytes
DD
FFFFh
F000h
0000h
voltage, made possible by the internal charge pump. Thus, the
Code Flash
64K Bytes
Hardware Security
Extra Row
User
FFFFh
FFFFh
F000h
F000h
Flash Memory
4K Bytes
Boot Flash
4K Bytes
AT89C5132
Boot
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