AT89C51RB2-3CSIM Atmel, AT89C51RB2-3CSIM Datasheet - Page 91

• Manufacturer Part Number: AT89C51RB2-3CSIM
• Description: IC 8051 MCU FLASH 16K 40DIP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RB2-3CSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No

Bootloader Architecture
Introduction
Acronyms
4180E–8051–10/06
Access via
Specific
Protocol
Access From
User
Application
The bootloader manages a communication according to a specific defined protocol to
provide the whole access and service on Flash memory. Furthermore, all accesses and
routines can be called from the user application.
Figure 36. Diagram Context Description
ISP: In-system Programming
SBV: Software Boot Vector
BSB: Boot Status Byte
SSB: Software Security Bit
HW : Hardware Byte
Bootloader
AT89C51RB2/RC2
Flash Memory
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