Registers – Rainbow Electronics AT89C5131 User Manual
Page 52
52
AT89C5131
4136A–USB–03/03
Registers
Reset Value = XXXX XX00b
Not bit addressable
Table 42. EECON (S:0D2h)
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 XRAM space during MOVX.
0
EEBUSY
Programming Busy flag
Set by hardware when programming is in progress.
Cleared by hardware when programming is done.
Cannot be set or cleared by software.