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H8S/2214 Scheda tecnica(PDF) 599 Page - Renesas Technology Corp

Il numero della parte H8S/2214
Spiegazioni elettronici  16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series
PDF  936 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S/2214 Scheda tecnica(HTML) 599 Page - Renesas Technology Corp

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Section 14 RAM
Rev.4.00 Sep. 18, 2008 Page 539 of 872
REJ09B0189-0400
Section 14 RAM
14.1
Overview
The H8S/2214 Group has 12 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).
14.1.1
Block Diagram
Figure 14.1 shows a block diagram of the on-chip RAM.
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'FFC000
H'FFC002
H'FFC004
H'FFFFC0
H'FFC001
H'FFC003
H'FFC005
H'FFFFC1
H'FFFFFE
H'FFFFFF
H'FFEFBE
H'FFEFBF
Figure 14.1 Block Diagram of RAM



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