Rainbow Electronics T89C5115 - Manual (Page 28)

28
T89C5115
4128A–8051–04/02
Registers Table 18. EECON Register
EECON (S:0D2h)
EEPROM Control Register
Reset Value = XXXX XX00b
Not bit addressable
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 XRAM 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.