Section 9 Ram; Overview; Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

9.1

Overview

The H8S/2194C, H8S/2194B, and H8S/2194A have 6 kbytes, and the H8S/2194, H8S/2193,
H8S/2192 and H8S/2191 have 3 kbytes, of on-chip high-speed static RAM. The on-chip RAM
is connected to the CPU by a 16-bit data bus, enabling both byte data and word data to be
accessed in one state. This makes it possible to perform fast word data transfer.
9.1.1

Block Diagram

Figure 9.1 shows a block diagram of the on-chip RAM.

Section 9 RAM

Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'FFF3B0
H'FFF3B2
H'FFF3B4
H'FFFFAE
Figure 9.1 Block Diagram of RAM (H8S/2194)
H'FFF3B1
H'FFF3B3
H'FFF3B5
H'FFFFAF
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