r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 907

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

This LSI has 256-Kbyte on-chip flash memory. The flash memory has the following features.
22.1
• Two flash-memory MATs, with one selected by the mode in which the LSI starts up
• Three on-board programming modes and one off-board programming mode
• Downloading of an on-chip program to provide an interface for programming/erasure
The on-chip flash memory has two memory spaces in the same address space (hereafter
referred to as memory MATs). The mode setting when the LSI starts up determines the
memory MAT that is currently mapped. The MAT can be switched by bank-switching after the
LSI has started up.
 Size of the user MAT, from which booting-up proceeds after a power-on reset in user
 Size of the user boot MAT, from which booting-up proceeds after a power-on reset in user
On-board programming modes
Boot Mode: The on-chip SCI interface is used for programming in this mode. Either the user
MAT or user-boot MAT can be programmed, and the bit rate for data transfer between the host
and this LSI are automatically adjusted.
User Program Mode: This mode allows programming of the user MAT via any desired
interface.
User Boot Mode: This mode allows writing of a user boot program via any desired interface
and programming of the user MAT.
Off-board programming mode
Programmer Mode: This mode allows programming of the user MAT and user boot MAT
with the aid of a PROM programmer.
This LSI has a dedicated programming/erasing program. After this program has been
downloaded to the on-chip RAM, programming or erasing can be performed by setting
parameters as arguments. “User branching” is also supported.
mode: 256 Kbytes
boot mode: 12 Kbytes
Features
Section 22 Flash Memory
Rev. 1.00 Sep. 21, 2007 Page 881 of 1124
Section 22 Flash Memory
REJ09B0402-0100