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HD6433644R Datasheet(PDF) 187 Page - Renesas Technology Corp

Part # HD6433644R
Description  8-Bit Single-Chip Microcomputer
PDF  549 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433644R Datasheet(HTML) 187 Page - Renesas Technology Corp

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Section 7 RAM
Rev. 6.00 Sep 12, 2006 page 167 of 526
REJ09B0326-0600
Section 7 RAM
7.1
Overview
The H8/3644 Group has 1 kbyte and 512 byte of high-speed static RAM on-chip. 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
Block Diagram
Figure 7.1 shows a block diagram of the on-chip RAM.
H'FF7E
H'FF7F
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
Even-numbered
address
Odd-numbered
address
H'FF7E
H'FB82
H'FB80
H'FB80
H'FB82
H'FB81
H'FB83
On-chip RAM
Figure 7.1 RAM Block Diagram



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