AT89C51CC01 Atmel Corporation, AT89C51CC01 Datasheet - Page 41
AT89C51CC01
Manufacturer Part Number
AT89C51CC01
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C51CC01.pdf
(167 pages)
2.AT89C51CC01.pdf
(12 pages)
3.AT89C51CC01.pdf
(32 pages)
4.AT89C51CC01.pdf
(29 pages)
Specifications of AT89C51CC01
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
40 MHz
Cpu
8051-12C
Max I/o Pins
34
Uart
1
Can
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/CAN
Watchdog
Yes
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Reading the Flash Spaces
User
Extra Row
Hardware Security Byte
4129N–CAN–03/08
Figure 23. Hardware Programming Procedure
The following procedure is used to read the User space:
•
Note:
The following procedure is used to read the Extra Row space and is summarized in
Figure 24:
•
•
•
The following procedure is used to read the Hardware
summarized in Figure 24:
•
•
•
Read one byte in Accumulator by executing MOVC A,@A+DPTR where A+DPTR is
the address of the code byte to read.
Map the Extra Row space by writing 02h in FCON register.
Read one byte in Accumulator by executing MOVC A,@A+DPTR with A = 0 and
DPTR = FF80h to FFFFh.
Clear FCON to unmap the Extra Row.
Map the Hardware Security space by writing 04h in FCON register.
Read the byte in Accumulator by executing MOVC A,@A+DPTR with A = 0 and
DPTR = 0000h.
Clear FCON to unmap the Hardware Security Byte.
FCON is supposed to be reset when not needed.
Exec: MOVX @DPTR, A
Save and Disable IT
Programming
Flash Spaces
End Loading
FCON = 0Ch
DPTR = 00h
ACC = Data
Data Load
Restore IT
EA = 0
Launch Programming
Security
Save and Disable IT
End Programming
FCON = 54h
FCON = A4h
FCON = 00h
Clear Mode
Cleared?
RestoreIT
FBusy
EA = 0
space and is
41