ata6603 ATMEL Corporation, ata6603 Datasheet - Page 295

• Manufacturer Part Number: ata6603
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

4921D–AUTO–08/07
Return:
Do_spm:
Wait_spm:
Wait_ee:
; return to RWW section
; verify that RWW section is safe to read
in
sbrs temp1, RWWSB
ret
; re-enable the RWW section
ldi
call Do_spm
rjmp Return
; check for previous SPM complete
in
sbrc temp1, SELFPRGEN
rjmp Wait_spm
; input: spmcrval determines SPM action
; disable interrupts if enabled, store status
in
cli
; check that no EEPROM write access is present
sbic EECR, EEPE
rjmp Wait_ee
; SPM timed sequence
out
spm
; restore SREG (to enable interrupts if originally enabled)
out
ret
temp1, SPMCSR
spmcrval, (1<<RWWSRE) | (1<<SELFPRGEN)
temp1, SPMCSR
temp2, SREG
SPMCSR, spmcrval
SREG, temp2
; If RWWSB is set, the RWW section is not ready yet
ATA6602/ATA6603
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