AT89LP51ED2-20AU Atmel, AT89LP51ED2-20AU Datasheet - Page 211
AT89LP51ED2-20AU
Manufacturer Part Number
AT89LP51ED2-20AU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
Specifications of AT89LP51ED2-20AU
Rohs
yes
Core
8051
Processor Series
AT89x
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
TQFP-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
Program Memory Type
Flash
Factory Pack Quantity
160
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24.5.7
Figure 24-14. Blank Check Flow
3714A–MICRO–7/11
COMMAND FINISHED
Blank Check Command Description
Wait Address not
Send Blank Check Command
Erased
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND FINISHED
Wait COMMAND_OK
Example:
Example:
Programming Data (write 55h at address 0010h in the Flash)
Programming Atmel function (write SSB to level 2)
Writing Frame (write BSB to 55h)
Blank Check ok at address xxxx
Blank Check ok
Blank Check with checksum error
BOOTLOADER
HOST
BOOTLOADER
HOST
BOOTLOADER
HOST
BOOTLOADER
HOST
HOST
BOOTLOADER
BOOTLOADER
HOST
Blank Check Command
address & CR & LF
: 05 0000 04 0000 7FFF 01 78 xxxx CR LF
: 01 0010 00 55 9A
: 01 0010 00 55 9A . CR LF
: 02 0000 03 05 01 F5
: 02 0000 03 05 01 F5. CR LF
: 03 0000 03 06 00 55 9F
: 03 0000 03 06 00 55 9F . 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
’X’ & CR & LF
’.’ & CR & LF
AT89LP51RD2/ED2/ID2 Preliminary
Send COMMAND_OK
Send Checksum Error
Wait Blank Check Command
Bootloader
Send First Address
not Erased
Checksum Error
Flash Blank
211
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