Rainbow Electronics T89C51CC02 - Manual (Page 34)

34 Rev.A - May 17, 2001
Preliminary
T89C51CC02
9.5. Registers
EECON (S:0D2h)
EEPROM Control Register
Reset Value= XXXX XX00b
Not bit addressable
Figure 18. EECON Register
7 6 5 4 3 2 1 0
EEPL3 EEPL2 EEPL1 EEPL0 - - EEE EEBUSY
Bit Number Bit Mnemonic Description
7-4 EEPL3-0
Programming Launch command bits
Write 5Xh followed by AXh to EEPL to launch the programming.
3 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1 EEE
Enable EEPROM Space bit
Set to map the EEPROM space during MOVX instructions (Write in the column latches)
Clear to map the ERAM space during MOVX.
0 EEBUSY
Programming Busy flag
Set by hardware when programming is in progress.
Cleared by hardware when programming is done.
Can not be set or cleared by software.