AT89LP51ED2-20MU Atmel, AT89LP51ED2-20MU Datasheet - Page 212

• Manufacturer Part Number: AT89LP51ED2-20MU
• Description: 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
• Manufacturer: Atmel

Specifications of AT89LP51ED2-20MU

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: VQFN-44
• Mounting Style: SMD/SMT
• Data Rom Size: 4 KB
• Interface Type: 2-Wire, SPI, UART
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Processor Series: AT89x
• Program Memory Type: Flash
• Factory Pack Quantity: 360

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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