hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 233

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

7.1
The H8/38024, H8/38023, H8/38022, H8/38124, H8/38123, H8/38122, H8/38024S, H8/38023S,
and H8/38022S have 1 Kbyte of high-speed static RAM on-chip, and the H8/38021, H8/38020,
H8/38121, H8/38120, H8/38021S, and H8/38020S have 512 bytes. The RAM is connected to the
CPU by a 16-bit data bus, allowing high-speed 2-state access for both byte data and word data.
7.1.1
Figure 7.1 shows a block diagram of the on-chip RAM.
Overview
Block Diagram
H'FF7E
H'FB80
H'FB82
Figure 7.1 RAM Block Diagram (H8/38024)
Even-numbered
Internal data bus (upper 8 bits)
address
Internal data bus (lower 8 bits)
H'FB80
H'FB82
H'FF7E
Section 7 RAM
On-chip RAM
Odd-numbered
address
Rev. 7.00 Mar 10, 2005 page 191 of 652
H'FB81
H'FB83
H'FF7F
REJ09B0042-0700
Section 7 RAM