AT89C51ED2 Atmel Corporation, AT89C51ED2 Datasheet - Page 91

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AT89C51ED2

Manufacturer Part Number
AT89C51ED2
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of AT89C51ED2

Flash (kbytes)
64 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
32
Spi
1
Uart
1
Sram (kbytes)
2
Eeprom (bytes)
2048
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART
Watchdog
Yes

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23.3
4235K–8051–05/08
Registers
Figure 23-2. Recommended EEPROM Data Read Sequence
Table 23-1.
EECON (0D2h)
EEPROM Control Register
Bit Number
7 - 2
7
-
Mnemonic
EECON Register
6
-
Bit
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Exec: MOVX A, @DPTR
EEPROM Data Mapping
EEPROM Data Mapping
EECON = 00h (EEE = 0
EEPROM Data Read
EECON = 02h (EEE=1)
Save & Disable IT
DPTR= Address
4
-
Sequence
ACC= Data
Last Byte
Cleared?
Data Read
to Read?
Restore IT
EEBusy
EA= 0
3
-
AT89C51RD2/ED2
2
-
EEE
1
EEBUSY
0
91

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