R01UH0823EJ0100 Rev.1.00
Page 1662 of 1823
Jul 31, 2019
RX23W Group
50. Flash Memory (FLASH)
50.4
Register Descriptions
50.4.1
E2 DataFlash Control Register (DFLCTL)
Note 1. Start-up area information program and access window information program
The DFLCTL register is used to enable or disable access (read, program, and erase) to the E2 DataFlash and access
(start-up area information program, and access window information program) to the extra area in P/E mode.
When reading, programming, and erasing the E2 DataFlash, set the DFLCTL.DFLEN bit to 1 and wait for the E2
DataFlash STOP recovery time (tDSTOP) to elapse before reading the E2 DataFlash and entering E2 DataFlash P/E
mode. Do not read the E2 DataFlash or enter E2 DataFlash P/E mode until tDSTOP has elapsed.
Refer to
section 50.7.1, Sequencer Modes
for details on E2 DataFlash P/E mode. Refer to
for E2 DataFlash STOP recovery time (tDSTOP).
Address(es): FLASH.DFLCTL 007F C090h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
—
DFLEN
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
E2 DataFlash Access
Enable
0: Access to E2 DataFlash and access to the extra area in P/E mode*
disabled
1: Access to E2 DataFlash and access to the extra area in P/E mode*
enabled
R/W
b7 to b1
—
Reserved
These bits are read as 0. The write value should be 0.
R/W