AT89C51AC2 Atmel Corporation, AT89C51AC2 Datasheet - Page 16

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AT89C51AC2

Manufacturer Part Number
AT89C51AC2
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of AT89C51AC2

Flash (kbytes)
32 Kbytes
Max. Operating Frequency
40 MHz
Cpu
8051-12C
Max I/o Pins
34
Uart
1
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
62.5
Sram (kbytes)
1.25
Eeprom (bytes)
2048
Self Program Memory
API
Operating Voltage (vcc)
3.0 to 5.5
Timers
4
Isp
UART
Watchdog
Yes

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Flow Description
Program Configuration Example
16
A/T89C51AC2 UART Bootloader
COMMAND FINISHED
Wait COMMAND_OK
Send Write Command
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Wait Security Error
Programming Atmel function (write SSB to level 2)
Writing Frame (write BSB to 55h)
HOST
BOOTLOADER
HOST
BOOTLOADER
’X’ & CR & LF
Write Command
’P’ & CR & LF
’.’ & 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
Send Checksum Error
Send Security error
Bootloader
Wait Write Command
Send COMMAND_OK
Wait Programming
Checksum Error
NO_SECURITY
4231D–CAN–03/08

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