HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 759

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

18.1
The H8S/2339 has 32 kbytes of on-chip high-speed static RAM, the H8S/2338 and H8S/2332
have 8 kbytes. 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).
18.1.1
Figure 18.1 shows a block diagram of 32 kbytes of on-chip RAM.
Overview
Block Diagram
Figure 18.1 Block Diagram of RAM (32 kbytes)
H'FFFBFE
H'FF7C00
H'FF7C02
H'FF7C04
Section 18 RAM
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
Rev.4.00 Sep. 07, 2007 Page 729 of 1210
H'FFFBFF
H'FF7C01
H'FF7C03
H'FF7C05
REJ09B0245-0400