mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 530

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Flash Operation in Low-Power Modes
530
Next Command
(Write FCCOB)
User Cmd Interrupt/Suspend
Command Initiation
Figure 23-33. Suspend and Resume of Erase Flash Sector Operation
ERSSCR Suspended
ERSSCR
Completed
Yes
No
Yes
Yes
No
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Enter with CCIF = 1
Launch/Resume Command
(Clear CCIF)
Request Suspend
(Set ERSSUSP)
ERSSCR Command
(Write FCCOB)
Clear ERSSUSP
Service Interrupt
(Read Flash)
ERSSUSP=0?
Resume Erase?
CCIF = 1?
Interrupt?
CCIF = 1?
No
Yes
Yes
No
No, Abort
Preliminary
ERSSCR Suspended
ERSSUSP=1
ERSSUSP: Bit in FCNFG register
SUSPACK: Internal Suspend Acknowledge
Set SUSPACK = 1
Save Erase Algo
Start
New
SUSPACK=1
ERSSUSP=1?
Memory Controller
Command Processing
Execute
DONE?
No
No
Yes
Set CCIF
Freescale Semiconductor, Inc.
Yes
No
Yes
Restore Erase Algo
Clear SUSPACK = 0
Clear ERSSUSP
ERSSCR Completed
ERSSUSP=0
Resume
ERSSCR