Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1659 of 1823
Jul 31, 2019
RX23W Group 50. Flash Memory (FLASH)
50. Flash Memory (FLASH)
This MCU has packages with 384 and 512 Kbyte flash memory (ROM) for storing code and 8-Kbyte flash memory (E2
DataFlash) for storing data.
In this section, “PCLK” is used to refer to PCLKB.
50.1 Overview
Table 50.1 lists the Flash Memory Specifications.
Table 50.7 lists the I/O Pins Used in Boot Mode.
Note 1. Refer to the manual of each serial programmer and “Renesas Flash Programmer Flash memory programming software User’s
Manual” for more details.
Table 50.1 Flash Memory Specifications
Item Description
Memory space  User area: Up to 512 Kbytes
 Data area: 8 Kbytes
 Extra area: Stores the start-up area information, access window information, and unique ID
Software commands
 The following commands are implemented:
Program, blank check, block erase, and all-block erase
 The following commands are implemented for programming the extra area:
Start-up area information program and access window information program
Value after erasure
 ROM: FFh
 E2 DataFlash: FFh
Interrupt An interrupt (FRDYI) is generated upon completion of software command processing or forced stop
processing.
On-board programming Boot mode (SCI Interface)*
1
 Channel 1 of the serial communications interface (SCI1) is used for asynchronous serial
communication.
 The user area and data area are rewritable.
Boot mode (FINE interface)*
1
 The FINE is used.
 The user area and data area are rewritable.
Boot mode (USB interface)*
1
 Channel 0 of the USB 2.0 function (USB0) module is used.
 The user area and data area are rewritable.
 The flash memory can be rewritable in self-powered or bus-powered mode.
 A personal computer can be connected using only a USB cable.
Self-programming in single-chip mode
 The user area and data area are rewritable using the flash rewrite routine in the user program.
Off-board programming The user area and data area are rewritable using a flash programmer (serial programmer or parallel
programmer) compatible with this MCU.
ID code protection
 Connection with the serial programmer can be enabled or disabled using ID codes in boot mode.
 Connection with the on-chip debugging emulator can be enabled or disabled using ID codes.
 Connection with the parallel programmer can be enabled or disabled using ROM codes.
Start-up program protection This function is used to safely rewrite block 0 to block 7.
Area protection This function enables rewriting only the selected blocks in the user area and disables the other blocks
during self-programming.
Background Operation (BGO) Programs on the ROM can be executed while rewriting the E2 DataFlash.

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English