Section 24 Flash Memory
Rev. 1.00 Apr. 28, 2008 Page 798 of 994
REJ09B0452-0100
24.9 Protection
There are three types of protection against the flash memory programming/erasing: hardware
protection, software protection, and error protection.
24.9.1 Hardware
Protection
Programming and erasure of the flash memory is forcibly disabled or suspended by hardware
protection. In this state, download of an on-chip program and initialization are possible. However,
programming or erasure of the user MAT cannot be performed even if the programming/erasing
program is initiated, and the error in programming/erasing is indicated by the FPFR parameter.
Table 24.14 Hardware Protection
Function to be Protected
Item Description
Download
Programming/
Erasing
Reset protection
•
The programming/erasing interface
registers are initialized in the reset
state (including a reset by the WDT)
and the programming/erasing
protection state is entered.
•
The reset state will not be entered by
a reset using the
RES
pin unless the
RES
pin is held low until oscillation has
settled after a power is initially
supplied. In the case of a reset during
operation, hold the
RES
pin low for the
RES
pulse width given in the AC
characteristics. If a reset is input during
programming or erasure, data in the
flash memory is not guaranteed. In this
case, execute erasure and then
execute programming again.
O O
Содержание H8S/2100 Series
Страница 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Страница 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Страница 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Страница 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Страница 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Страница 354: ...Section 11 16 Bit Cycle Measurement Timer TCM Rev 1 00 Apr 28 2008 Page 328 of 994 REJ09B0452 0100...
Страница 380: ...Section 12 16 Bit Duty Period Measurement Timer TDP Rev 1 00 Apr 28 2008 Page 354 of 994 REJ09B0452 0100...
Страница 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Страница 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Страница 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Страница 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Страница 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
Страница 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
Страница 1023: ......
Страница 1024: ...H8S 2117R Group Hardware Manual...