AT89LP51ED2-20AAU Atmel, AT89LP51ED2-20AAU Datasheet - Page 213
AT89LP51ED2-20AAU
Manufacturer Part Number
AT89LP51ED2-20AAU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
Specifications of AT89LP51ED2-20AAU
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
LQFP-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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24.5.9
Figure 24-16. Read Flow
3714A–MICRO–7/11
COMMAND FINISHED
Read Function Description
Wait Value of Data
Send Read Command
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Wait Security Error
This flow is similar for the following frames:
Example:
• Reading Frame
• EOF Frame/ Atmel Frame (only reading Atmel Frame)
Read function (read SBV)
Atmel Read function (read Bootloader version)
HOST
BOOTLOADER
HOST
BOOTLOADER
’value’ & ’.’ & CR & LF
Read Command
’X’ & CR & LF
’L’ & CR & LF
AT89LP51RD2/ED2/ID2 Preliminary
: 02 0000 05 07 02 F0
: 02 0000 05 07 02 F0 Value . CR LF
: 02 0000 01 02 00 FB
: 02 0000 01 02 00 FB Value . CR LF
Send Checksum error
Send Security error
Bootloader
Wait Read Command
RD_WR_SECURITY
Send Data Read
Checksum error
Read Value
213
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