AT89C51IC2-SLRUM Atmel, AT89C51IC2-SLRUM Datasheet - Page 112

• Manufacturer Part Number: AT89C51IC2-SLRUM
• Description: IC 8051 MCU 32K FLASH 44-PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51IC2-SLRUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (32K 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: 44-PLCC
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: AT89C51IC2-SLRUMTR

Bootloader Architecture
Introduction
Acronyms
112
AT89C51IC2
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 43. Diagram Context Description
ISP: In-system Programming
SBV: Software Boot Vector
BSB: Boot Status Byte
SSB: Software Security Bit
HW : Hardware Byte
Bootloader
Flash Memory
4301D–8051–02/08