Datasheet

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