HD6432621 Hitachi, HD6432621 Datasheet - Page 691
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
- Current page: 691 of 1069
- Download datasheet (5Mb)
19.8
There are three kinds of flash memory program/erase protection: hardware protection, software
protection, and error protection.
19.8.1
Hardware protection refers to a state in which programming/erasing of flash memory is forcibly
disabled or aborted. Hardware protection is reset by settings in flash memory control register 1
(FLMCR1), flash memory control register 2 (FLMCR2), erase block register 1 (EBR1), and erase
block register 2 (EBR2). The FLMCR1, FLMCR2, EBR1, and EBR2 settings are retained in the
error-protected state. (See table 19-8.)
Table 19-8 Hardware Protection
Item
FWE pin protection
Reset/standby
protection
Protection
Hardware Protection
Description
When a low level is input to the FWE pin,
FLMCR1, FLMCR2, (except bit FLER)
EBR1, and EBR2 are initialized, and the
program/erase-protected state is entered.
In a reset (including a WDT reset) and in
standby mode, FLMCR1, FLMCR2, EBR1,
and EBR2 are initialized, and the
program/erase-protected state is entered.
In a reset via the RES pin, the reset state
is not entered unless the RES pin is held
low until oscillation stabilizes after
powering on. In the case of a reset during
operation, hold the RES pin low for the
RES pulse width specified in the AC
Characteristics section.
Program
Yes
Yes
Functions
Erase
Yes
Yes
647
Related parts for HD6432621
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Silicon N-Channel Power MOS FET Module
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
High Speed Power Switching
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
Silicon N-Channel IGBT
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
IGBT MODULE RANGE WITH SOFT AND FAST (SFD) FREE-WHEELING DIODES
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
IGBT MODULE RANGE WITH SOFT AND FAST (SFD) FREE-WHEELING DIODES
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
IGBT MODULE RANGE WITH SOFT AND FAST (SFD) FREE-WHEELING DIODES
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
8MHz V(cc): -0.3 to +7.0V V(in): -0.3 to +0.3V advanced CRT controller (ACRTC)
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
65,536-WORD x 4-BIT MULTIPORT CMOS VIDEO RAM
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
65,536-WORD x 4-BIT MULTIPORT CMOS VIDEO RAM
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
65,536-word ? 4-bit High Speed CMOS Static RAM
Manufacturer:
HITACHI
Datasheet:
Part Number:
Description:
SINGLE CHIP CODEC WITH FILTERS(COMBO)
Manufacturer:
HITACHI
Datasheet: