H8SSLASH2218 datasheet(599/750 Pages) RENESAS

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Section 16 RAM

Rev.6.00 Jun. 03, 2008 Page 551 of 698

REJ09B0074-0600

Section 16 RAM

The H8S/2218 and H8S/2212 have 12 kbytes of on-chip high-speed static RAM. The H8S/2217

and H8S/2211 have 8 kbytes of on-chip high-speed static RAM. The H8S/2210 and H8S/2210S

has 4 kbytes of on-chip high-speed static RAM. The RAM is connected to the CPU by a 16-bit

data bus, enabling one-state access by the CPU to both byte data and word data. This makes it

possible to perform fast word data transfer.

The on-chip RAM can be enabled or disabled by means of the RAM enable bit (RAME) in the

system control register (SYSCR). For details on SYSCR, refer to section 3.2.2, System Control

Product Class

ROM Type

RAM Size

RAM Address

HD64F2218

HD64F2218U

Flash memory Version

12 kbytes

H'FFC000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

H8S/2218

Group

HD6432217

Masked ROM Version

8 kbytes

H'FFD000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

H8S/2212

Group

HDF64F2212

HDF64F2212U

Flash memory Version

12 kbytes

H'FFC000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

HD64F2211

HD64F2211U

8 kbytes

H'FFD000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

HD6432211

Masked ROM Version

8 kbytes

H'FFD000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

HD6432210

HD6432210S

4 kbytes

H'FFE000 to H'FFEFBF

H'FFFFC0 to H'FFFFFF

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