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User’s Manual - Preliminary -
Philips Semiconductors
P89LPC920/921/922
FLASH MEMORY
Table 15-3: IAP error status
Bit
Flag
Description
0
OI
Operation Interrupted. Indicates that an operation was aborted due to an interrupt occuring
during a program or erase cycle.
1
SV
Security Violation. Set if program or erase operation fails due to security settings. Cycle is
aborted.Memory contents are unchanged. CRC output is invalid.
2
HVE
High Voltage Error. Set if error detected in high voltage generation circuits. Cycle is
aborted. Memory contents may be corrupted.
Verify error. Set during IAP programming of user code if the contents of the programmed
address does not agree with the intended programmed value. IAP uses the MOVC
instruction to perform this verify. Attempts to program user code that is MOVC protected
can be programmed but will generate this error after the programming cycle has been
completed.
3
VE
4
-
unused; reads as a ’1’
5
-
unused; reads as a ’1’
6
-
unused; reads as a ’1’
7
-
unused; reads as a ’0’
Table 15-4: IAP function calls
IAP function
IAP call parameters
Input parameters:
Program User Code Page (requires “key”)
ACC
= 00h
R3
= number of bytes to program
R4
= page address (MSB)
R5
= page address (LSB)
R7
= pointer to data buffer in RAM
F1
= 00h
Return parameter(s):
R7
= status
Carry
= set on error, clear on no error
Input parameters:
Read Version Id
ACC
Return parameter(s):
R7
2003 Dec 8
= 01h
= IAP code version id
105