AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 4

• 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

Active CAN Bootloader Errata List
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CAN Bootloader Errata History
CAN Bootloader Errata Description
1. Boot Process - SBV > 0x7F00 leads to Atmel bootloader execution
2. The CAN is Not Stopped
3. Watchdog and Flash API Starting the Bootloader Execution
4. Flash API ’__api_wr_code_page’ with 0 Data in Length Parameter Field
5. Problem to program a hex file less than 16 bytes
6. Unexpected Echo After Start Application Command
4
Version Number
1.0.0
1.0.2
1.0.3
1.0.4
Watchdog and Flash API Starting the Bootloader Execution
Start application with security set
When BLJB bit is active and SBV > 0x7F00 the Atmel bootlader is executed instead of a custom bootloader.
Workaround
Update to bootloader revision 1.0.2
When the bootloader receives the command ’Start Application’ (LJMP 0), the CAN is not stopped.
Workaround
The application must have in its setup function a reset of CAN macro.
When an application call ’__api_start_bootloader’ or’__api_start_isp’ routines while the watchdog is enabled, when the
watchdog overflow it will restart the application instead of the bootloader
Workaround
Set BLJB(=0) before calling the ‘__api_start_bootloader’ or ‘__api_start_isp’ if the watchdog is used.
When the Flash API ’__api_wr_code_page’ is called with the field ‘nb_data’ equals 0 then 255 data are written in Flash.
Workaround
Include a test on ‘nb_data’ before executing ‘__api_wr_code_page’ routine.
When we try to program a hex file with a size size less than 16 bytes, some errors appear depending of the start
address.
Workaround
Program with a range address higher than 16 bytes.
When the command start application (with reset) is received by the CAN bootloader; the bootloader answers with a
ramdom CAN frame before starting the application.
mov CANGCON, #00h
AT89C51CC03/C/U Errata Sheet
Errata List
1, 2, 3, 4, 5, 6, 7, 9
3, 8, 9
3, 8,10
3, 8
Date Code
0601 and above
4293G–CAN–06/05