AT89C51RE2-RLTUM Atmel, AT89C51RE2-RLTUM Datasheet - Page 59

• Manufacturer Part Number: AT89C51RE2-RLTUM
• Description: MCU 8051 128K FLASH 44-VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RE2-RLTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 34
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89OCD-01
• Minimum Operating Temperature: - 40 C
• Height: 1.45 mm
• Length: 10.1 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 10.1 mm
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Reading/Blank
checking memory
Requests from Host
Answers from
Bootloader
Changing
memory/page
Requests from Host
Answers from
Bootloader
7663E–8051–10/08
To start the reading or blank checking operation,
The boot loader can answer to a read command with:
•
•
•
The bootloader answers to blank check command:
•
•
•
•
To change the memory selected and/or the page, the Host can send two commands.
•
•
The boot loader can answer to a read command with:
•
•
Command
Read selected memory
Blank Check selected memory
Command
Select New Page
Select Memory
‘Address = data ‘& ‘CR’ &’LF’ the number of data by line depends of the bootloader.
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
‘L’ & ‘CR’ & ‘LF’ if the Security is set
‘.’ & ‘CR’ &’LF’ when the blank check is ok
‘First Address wrong’ ‘CR’ & ‘LF’ when the blank check is fail
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
‘L’ & ‘CR’ & ‘LF’ if the Security is set
Select New Page to keep the same memory.
Select Memory to change the Memory and page
‘. ‘& ‘CR’ &’LF’ if the command is done
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
Record
Type
04h
Record
Length
05h
Record
Type
02h
04h
Offset
0000h
Record
Length
02h
02h
Data[0]
Start Address
Data[1]
address
Offset
0000h
start
AT89C51RE2
Data[2]
End Address
bits) + 0h
Data[0]
Memory
Page (4
space
Data[3]
Data[1]
Page
Data[4]
00h
00h
01h
59