AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 15

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Read Configuration
Information or
Manufacturer
Information
Requests from Host
Answers from
Bootloader
4386B–8051–03/08
The flow described below allows the user to read the configuration or manufacturer information.
Note:
The bootloader answers with:
•
•
•
Read Manufacturer Code
Read Bootloader version
Read Product Revision
‘value’ & ‘.’ & ‘CR’ & ’LF’ when the value is programmed
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
‘P’ & ‘CR’ & ‘LF’ if the Security is set
Read HSB (Fuse bit)
Read Product Name
Command Name
Read Family Code
Read Device ID1
Read Device ID2
The field “Load Offset” is not used
Read SSB
Read BSB
Read SBV
Read EB
Record
Type
05h
AT89C51AC3 UART Bootloader
Offset
Load
x
Record
Length
02h
Data[0]
0Bh
0Eh
00h
07h
0Fh
Data[1]
00h
01h
02h
03h
00h
01h
02h
06h
00h
00h
01h
00h
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