AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 26

• Manufacturer Part Number: AT89C51CC03
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC03

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 37
• Spi: 1
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

Starting the
Bootloader
26
AT89C51CC03 CAN Bootloader
•
•
Note:
There are two start bootloader routines possible:
This routine allows to start at the beginning of the bootloader as after a reset. After calling this
routine the regular boot process is performed and the communication must be opened before
any action.
•
•
•
This routine allows to start the bootloader with the CAN bit configuration of the application and
start with the state "communication open". That means the bootloader will return the message
“id_select_node” with the field com port open.
•
•
•
Parameter settings
instruction: LCALL FFC0h.
No special parameter setting
Set bit ENBOOT in AUXR1 register
instruction: LJUMP or LCALL at address F800h
No special parameter setting
Set bit ENBOOT in AUXR1 register
instruction: LJUMP or LCALL at address FF00h
1. See the AT89C51CC03 datasheet for the time that a write operation takes and this time must
2. No special resources are used by the bootloader during these operations
API Name
__api_erase_block0
__api_erase_block1
__api_erase_block2
__api_erase_block3
__api_erase_block4
multiply by the number of pages.
api_command
00h
00h
00h
00h
00h
api_dph
C0h
00h
20h
40h
80h
api_dpl
-
-
-
-
-
4251B–CAN–03/08
api_value
-
-