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Rev. 2.0, 11/00, page 134 of 1037
7.3.2
Flash Memory Control Register 2 (FLMCR2)
7
FLER
0
R
6
—
0
—
5
—
0
—
4
—
0
—
3
—
0
—
0
PSU
0
R/W
2
—
0
—
1
ESU
0
R/W
Bit
Initial value
R/W
:
:
:
FLMCR2 is an 8-bit register that monitors the presence or absence of flash memory
program/erase protection (error protection) and performs setup for flash memory program/erase
mode. FLMCR2 is initialized to H'00 by a reset. The ESU and PSU bits are cleared to 0 in
power-down state (excluding the medium-speed mode, module stop mode, and sleep mode),
hardware protect mode, or software protect mode.
Bit 7: Flash Memory Error (FLER)
Indicates that an error has occurred during an operation on flash memory (programming or
erasing). When FLER is set to 1, flash memory goes to the error-protection state.
Bit 7
FLER
Description
0
Flash memory is operating normally
Flash memory program/erase protection (error protection) is disabled
[Clearing condition] Reset or hardware standby mode
(Initial value)
1
An error has occurred during flash memory programming/erasing
Flash memory program/erase protection (error protection) is enabled
[Setting condition] See section 7.6.3, Error Protection
Bits 6 to 2: Reserved
These bits cannot be modified and are always read as 0.
Bit 1: Erase Setup (ESU)
Prepares for a transition to erase mode. Set this bit to 1 before setting the E bit to 1 in FLMCR1.
Do not set the SWE, PSU, EV, PV, E, or P bit at the same time.
Bit 1
ESU
Description
0
Erase setup cleared
(Initial value)
1
Erase setup
[Setting condition] When FWE = 1, and SWE = 1
Содержание Hitachi H8S/2191
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