Section 25
Flash Memory
Rev. 1.00 Mar. 12, 2008 Page 1017 of 1178
REJ09B0403-0100
11. If data other than H'FFFFFFFF is written to the key code area (H'00003C to H'00003F) of
flash memory, only H'00 can be read in programmer mode. (In this case, data is read as H'00.
Rewrite is possible after erasing the data.) For reading in programmer mode, make sure to
write H'FFFFFFFF to the entire key code area. If data other than H'FF is to be written to the
key code area in programmer mode, a verification error will occur unless a software
countermeasure is taken for the PROM programmer and the version of its program.
12. The programming program that includes the initialization routine and the erasing program that
includes the initialization routine are each 3 Kbytes or less. Accordingly, when the CPU clock
frequency is 34 MHz, the download for each program takes approximately 180
µ
s at the
maximum.
13. While an instruction in on-chip RAM is being executed, the DTC can write to the SCO bit in
FCCS that is used for a download request or FMATS that is used for MAT switching. Make
sure that these registers are not accidentally written to, otherwise an on-chip program may be
downloaded and damage RAM or a MAT switchover may occur and the CPU get out of
control. Do not use DTC to program flash related registers.
14. A programming/erasing program for flash memory used in the conventional H8S F-ZTAT
microcomputer 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.
15. Unlike the conventional H8S F-ZTAT microcomputer, no countermeasures are available for a
runaway by WDT during programming/erasing. Prepare countermeasures (e.g. use of the
periodic timer interrupts) for WDT with taking the programming/erasing time into
consideration as required.
Содержание H8S Family
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Страница 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Страница 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Страница 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Страница 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
Страница 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Страница 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Страница 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Страница 1168: ...Section 30 Platform Environment Control Interface PECI Rev 1 00 Mar 12 2008 Page 1120 of 1178 REJ09B0403 0100...
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Страница 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...