AT89LP51RD2 Atmel Corporation, AT89LP51RD2 Datasheet - Page 212

• Manufacturer Part Number: AT89LP51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

24.5.8
Figure 24-15. Display Flow
212
AT89LP51RD2/ED2/ID2 Preliminary
Display Data Description
COMMAND FINISHED
Wait Display Data
All Data Read
Send Display Command
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Example:
Wait Security Error
Display data from address 0000h to 0020h
BOOTLOADER
BOOTLOADER
BOOTLOADER
HOST
BOOTLOADER
Display Command
0000=-----data------ CR LF (16 data)
0010=-----data------ CR LF (16 data)
0020=data CR LF
: 05 0000 04 0000 0020 00 D7
: 05 0000 04 0000 0020 00 D7 CR LF
’L’ & CR & LF
’X’ & CR & LF
"Address = "
"Reading Value"
CR & LF
( 1 data)
Send Checksum Error
Send Security Error
Complet Frame
Bootloader
Wait Display Command
COMMAND FINISHED
RD_WR_SECURITY
Send Display Data
Checksum error
All Data Read
All Data Read
Read Data
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