T89C51RD2-SMSIM Atmel, T89C51RD2-SMSIM Datasheet - Page 70

• Manufacturer Part Number: T89C51RD2-SMSIM
• Description: IC MICRO CTRL 64K FLASH 68PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of T89C51RD2-SMSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Blank Check Command
Description
Figure 28. Blank Check Flow
Example
70
COMMAND FINISHED
T89C51RD2
Wait Address not
Send Blank Check Command
erased
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND FINISHED
Wait COMMAND_OK
Blank Check ko at address xxxx
Blank Check ok
Blank Check with checksum error
BOOTLOADER
HOST
HOST
BOOTLOADER
BOOTLOADER
HOST
Blank Check Command
’X’ & twice (CR & LF)
address & CR & LF
’.’ & CR & LF
: 05 0000 04 0000 7FFF 01 78 xxxx CR LF
: 05 0000 04 0000 7FFF 01 78
: 05 0000 04 0000 7FFF 01 78
: 05 0000 04 0000 7FFF 01 78 . CR LF
: 05 0000 04 0000 7FFF 01 70 X CR LF CR LF
: 05 0000 04 0000 7FFF 01 70
Send COMMAND_OK
Send Checksum error
Wait Blank Check Command
Bootloader
Send first Address
not erased
Checksum error
Flash blank
4243G–8051–05/03