H8SXSLASH1663R datasheet(1137/1504 Pages) RENESAS

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Section 25 Flash Memory

Rev. 2.00 Sep. 24, 2008 Page 1105 of 1468

REJ09B0412-0200

Section 25 Flash Memory

The flash memory has the following features. Figure 25.1 is a block diagram of the flash memory.

25.1

Features

• ROM size

Product Classification

ROM Size

ROM Address

H8SX/1663

R5F61663R

R5F61663M

384 Kbytes

H'000000 to H'05FFFF

(modes 1, 2, 3, 6, and 7)

H8SX/1664

R5F61664R

R5F61664M

512 Kbytes

H'000000 to H'07FFFF

(modes 1, 2, 3, 6, and 7)

H8SX/1668

R5F61668R

R5F61668M

1 Mbyte

H'000000 to H'0FFFFF

(modes 1, 2, 3, 6, and 7)

• Two memory MATs

The start addresses of two memory spaces (memory MATs) are allocated to the same address.

The mode setting in the initiation determines which memory MAT is initiated first. The

memory MATs can be switched by using the bank-switching method after initiation.

 User MAT initiated at a reset in user mode: 384 Kbytes/512 Kbytes/1 Mbyte

 User boot MAT is initiated at reset in user boot mode: 16 Kbytes

• Programming/erasing interface by the download of on-chip program

This LSI has a programming/erasing program. After downloading this program to the on-chip

RAM, programming/erasure can be performed by setting the parameters.

• Programming/erasing time

Programming time: 1 ms (typ.) for 128-byte simultaneous programming

Erasing time: 600 ms (typ.) per 1 block (64 Kbytes)

• Number of programming

The number of programming can be up to 100 times at the minimum. (1 to 100 times are

guaranteed.)

• Three on-board programming modes

SCI Boot mode: Using the on-chip SCI_4, the user MAT and user boot MAT can be

programmed/erased. In SCI boot mode, the bit rate between the host and this LSI can be

adjusted automatically.

USB boot mode: Using the on-chip USB, the user MAT can be programmed/erased.

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