T89C51CC02UA-SITIM Atmel, T89C51CC02UA-SITIM Datasheet - Page 5

• Manufacturer Part Number: T89C51CC02UA-SITIM
• Description: IC 8051 MCU FLASH 16K 28PLCC
• Manufacturer: Atmel
• Series: AT89C CANr

Specifications of T89C51CC02UA-SITIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-PLCC
• For Use With: AT89STK-06 - KIT DEMOBOARD 8051 MCU W/CAN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: T89C51CC02UASITIM

Active CAN Bootloader Errata List
• The CAN is Not De-activated
• Watchdog and Flash API Starting the Bootloader Execution
• Flash API “__api_wr_code_page” with 0 Data in Length Parameter Field
CAN Bootloader Errata History
CAN Bootloader Errata Description
1. The CAN is Not De-activated
2. Watchdog and Flash API Starting the Bootloader Execution
3. Flash api “__api_wr_code_page” with 0 data in length parameter field
4160B–CAN–12/02
Version Number
1.0.2
When the bootloader receives the command “Start Application” (LJMP 0), the CAN is not de-activated.
Workaround
The application must have in its setup function a reset of CAN macro.
When an application using the watchdog starts the bootloader by calling the Flash APIs __api_start_bootloader or
__api_start_isp, when the watchdog overflows it will restart the application.
Workaround
Before calling the Flash APIs __api_start_bootloader or __api_start_isp, the fuse bit BLJB must be set.
The workaround is to call the Flash API __api_set_BLJB to wait the watchdog overflows to start in the bootloader.
When the flash api “__api_wr_code_page” is called with the field nb_data equal 0 then 255 data are wrote in flash.
Workaround
Make a test in the bootloader to check the size of the value nb_data.
If nb_data = 0 return in the application with out launch programing sequence.
Or check in the flash api.
mov CANGCON, #00h
Errata List
1, 2, 3
5