Descriptions Of Registers Of The Flash Memory; Flash Memory Control Register 1 (Flmcr1) - Renesas H8/38024 Hardware Manual

6.6

Descriptions of Registers of the Flash Memory

6.6.1

Flash Memory Control Register 1 (FLMCR1)

Bit 7
—
Initial value 0
Read/Write —
FLMCR1 is a register that makes the flash memory change to program mode, program-verify
mode, erase mode, or erase-verify mode. For details on register setting, refer to section 6.8, Flash
Memory Programming/Erasing. By setting this register, the flash memory enters program mode,
erase mode, program-verify mode, or erase-verify mode. Read the data in the state that bits 6 to 0
of this register are cleared when using flash memory as normal built-in ROM.
Bit 7—Reserved
This bit is always read as 0 and cannot be modified.
Bit 6—Software Write Enable (SWE)
This bit is to set enabling/disabling of programming/enabling of flash memory (set when bits 5 to
0 and the EBR register are to be set).
Bit 6
SWE Description
0 Programming/erasing is disabled. Other FLMCR1 register bits and all EBR bits
cannot be set.
1 Flash memory programming/erasing is enabled.
Bit 5—Erase Setup (ESU)
This bit is to prepare for changing to erase mode. Set this bit to 1 before setting the E bit to 1 in
FLMCR1 (do not set SWE, PSU, EV, PV, E, and P bits at the same time).
Bit 5
ESU Description
0 The erase setup state is cancelled
1 The flash memory changes to the erase setup state. Set this bit to 1 before setting
the E bit to 1 in FLMCR1.
Rev. 6.00, 08/04, page 156 of 628
6 5
SWE ESU
0 0
R/W R/W
4 3
PSU EV
0 0
R/W R/W
2 1
PV E
0 0
R/W R/W R/W
(initial value)
(initial value)
0
P
0