AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 12

• Manufacturer Part Number: AT89C51CC02
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC02

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 20
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 0.5
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

Read the Flash or
EEPROM Data
Requests from Host
Note:
Answers from
Bootloader
Flow Description: Blank
Check Command
12
Blank check on Flash
Read EEPROM Data
Command Name
Read Flash
The field “Load offset” is not used.
T89C51CC02 UART Bootloader
COMMAND FINISHED
Wait Address Not
Send Blank Check Command
Erased
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND FINISHED
Wait COMMAND_OK
Record
The flow described below allows the user to read data in the Flash memory or in the EEPROM
data memory. A blank check command is possible with this flow.
The device splits into blocks of 16 bytes the data to transfer to the Host if the number of data to
display is greater than 16 data bytes.
The boot loader answers to a read Flash or EEPROM Data memory command:
•
•
•
The bootloader answers to blank check command:
•
•
•
•
Type
04h
‘Address = data ‘ & ‘CR’ & ’LF’
up to 16 data by line.
‘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
‘P’ & ‘CR’ & ‘LF’ if the Security is set
Load Offset
x
Blank Check Command
Address & CR & LF
Record
Length
’X’ & CR & LF
’.’ & CR & LF
05h
Data[0]
start address
Data[1]
Send COMMAND_OK
Send Checksum error
Wait Blank Check Command
Bootloader
Data[2]
Send First Address
Not Erased
end Address
Checksum Error
Flash Blank
Data[3]
4223C–CAN–03/08
Data[4]
00h
01h
02h