SH7211 Datasheet, PDF (972/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Section 21 Flash Memory
(5) Compatibility with Programming/Erasing Program of Conventional F-ZTAT SH
Microcontroller
A programming/erasing program for flash memory used in the conventional F-ZTAT SH
microcontroller which does not support download of the on-chip program by a SCO transfer
request cannot run in this LSI.
Be sure to download the on-chip program to execute programming/erasing of flash memory in this
LSI.
(6) Monitoring Runaway by WDT
Unlike the conventional F-ZTAT SH microcontroller, no countermeasures are available for a
runaway by WDT during programming/erasing by the downloaded on-chip program.
Prepare countermeasures (e.g. use of the user branch routine and periodic timer interrupts) for
WDT while taking the programming/erasing time into consideration as required.
(7) The Operating Frequency in On-Board Programming Mode
The frequency control register (FRQCR) should be set as follows in the erasing and programming
procedure, described in section 21.5, On-Board Programming Mode.
• Specify (Iφ: Bφ: Pφ) = (4: 4: 4) as the frequency division ratios of internal clocks.
When the input clock is 10 MHz, (Iφ: Bφ: Pφ) = (40 MHz: 40 MHz: 40MHz)
When the input clock is 8 MHz, (Iφ: Bφ: Pφ) = (32 MHz: 32 MHz: 32MHz)
• The following shows the frequency control register (FRQCR) values where (Iφ: Bφ: Pφ) = (4:
4: 4) as the frequency division ratios of internal clocks.
H'1000*
H'1111*
H'1333*
Note: * The CKOEN bit (bit 12) can be specified as either 0 or1.
(8) Programming the User MAT in User Program Mode
This LSI does not allow transitions from single chip mode to user program mode. Therefore, in
order to program the user MAT in user program mode, be sure to activate the LSI in MCU
extension mode 2 rather than in single chip mode.
Rev. 2.00 May. 08, 2008 Page 948 of 1200
REJ09B0344-0200