AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 11

• 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

Programming the
Flash or EEPROM
Data
Requests from Host
Answers from
Bootloader
Flow Description
Example
4223C–CAN–03/08
Program EEPROM Data
Command Name
Program Flash
COMMAND FINISHED
Wait COMMAND_OK
Send Write Command
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Wait Security Error
The flow described below shows how to program data in the Flash memory or in the EEPROM
data memory.
The bootloader programs on a page of 128 bytes basis when it is possible.
The host must take care that:
•
The boot loader answers with:
•
•
•
The data to program transmitted within a frame are in the same page.
‘.’ & ‘CR’ & ’LF’ when the data are programmed
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
‘P’ & ‘CR’ & ‘LF’ if the Security is set
Record type
00h
07h
Programming Data (write 55h at address 0010h in the Flash)
HOST
BOOTLOADER
start address
start address
Load Offset
’X’ & CR & LF
Write Command
’P’ & CR & LF
’.’ & CR & LF
: 01 0010 00 55 9A
: 01 0010 00 55 9A . CR LF
T89C51CC02 UART Bootloader
nb of Data
nb of Data
Record
length
Send Checksum error
Send Security error
Data[0]
x
x
Bootloader
Wait Write Command
Send COMMAND_OK
Wait Programming
Checksum Error
NO_SECURITY
...
...
...
Data[127]
x
x
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