r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 685

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 32.11
Notes:
1. The interrupt vector table and interrupt routine for interrupts to be used must be allocated to an area other than the erase target area.
2. td(SR-SUS) is required until suspend is acknowledged after the FMR21 bit is set to 1.
The interrupt to enter suspend must be enabled beforehand.
Write the command code 20h
Write D0h to any block address
Suspend Enabled)
Block Erase Flowchart in EW0 Mode (Flash Ready Status Interrupt Disabled and
I = 1 (interrupt enabled)
Block erase completed
Full status check
FMR20 = 1
FST7 = 1?
Start
Yes
No
Access the flash memory
Maskable interrupt
FMR21 = 1
FMR21 = 0
FST7 = 1?
REIT
Yes
I: Flag in CPU register
FST7: Bit in FST register
FMR20, FMR21: Bits in FMR2 register
(2)
(1)
No
32. Flash Memory
Page 653 of 740