Datasheet

Section 22 ROM (H8S/2138 F-ZTAT A-Mask Version, H8S/2134 F-ZTAT A-Mask Version)
Rev. 4.00 Jun 06, 2006 page 636 of 1004
REJ09B0301-0400
Bit 7
FLER Description
0 Flash memory is operating normally (Initial value)
Flash memory program/erase protection (error protection) is disabled
[Clearing condition]
Reset or hardware standby mode
1 An error has occurred during flash memory programming/erasing
Flash memory program/erase protection (error protection) is enabled
[Setting condition]
See section 22.8.3, Error Protection
Bits 6 to 2—Reserved: Should always be written with 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 SWE = 1
Bit 0—Program Setup (PSU): Prepares for a transition to program mode. Set this bit to 1 before
setting the P bit to 1 in FLMCR1. Do not set the SWE, ESU, EV, PV, E, or P bit at the same time.
Bit 0
PSU Description
0 Program setup cleared (Initial value)
1 Program setup
[Setting condition]
When SWE = 1