AT89C5131A-M Atmel Corporation, AT89C5131A-M Datasheet - Page 36

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AT89C5131A-M

Manufacturer Part Number
AT89C5131A-M
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of AT89C5131A-M

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)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
8.3.7
8.3.7.1
8.3.7.2
36
AT89C5130A/31A-M
Reading the Flash Spaces
User
Extra Row
Figure 8-7.
The following procedure is used to read the User space and is summarized in Figure 8-8:
The following procedure is used to read the Extra Row space and is summarized in Figure 8-8:
• Map the User space by writing 00h in FCON register.
• Read one byte in Accumulator by executing MOVC A, @A+DPTR with A = 0 & DPTR =
• 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 & DPTR =
0000h to FFFFh.
FF80h to FFFFh.
Hardware Programming Procedure
Exec: MOVX @DPTR, A
Launch Programming
End Programming
Programming
Flash Spaces
FCON = A4h
FCON = 0Ch
DPTR = 00h
FCON = 54h
Erase Mode
FCON = 00h
ACC = Data
Data Load
Cleared?
Disable IT
Enable IT
FBusy
EA = 0
EA = 1
4337K–USB–04/08

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