AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 32
AT89C5131A-L
Manufacturer Part Number
AT89C5131A-L
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(34 pages)
2.AT89C5131A-L.pdf
(4 pages)
3.AT89C5131A-L.pdf
(186 pages)
Specifications of AT89C5131A-L
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
3.0 to 3.6
Timers
4
Isp
UART/USB
Watchdog
Yes
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Extra Row
32
AT89C5131A-L
The following procedure is used to program the Extra Row space and is summarized in
Figure 18:
•
•
•
•
Figure 18. Flash and Extra Row Programming Procedure
Load data in the column latches from address FF80h to FFFFh.
Disable the interrupts.
Launch the programming by writing the data sequence 52h followed by A2h in
FCON register.
The end of the programming indicated by the FBUSY flag cleared.
Enable the interrupts.
Column Latches Loading
Launch Programming
End Programming
Programming
Flash Spaces
see Figure 17
FCON = Axh
FCON = 5xh
Erase Mode
FCON = 00h
Cleared?
Disable IT
Enable IT
FBusy
EA = 0
EA = 1
4338F–USB–08/07
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