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HD6432351 데이터시트(PDF) 203 Page - Renesas Technology Corp

부품명 HD6432351
상세설명  16-Bit Single-Chip Microcomputer
PDF  1025 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432351 데이터시트(HTML) 203 Page - Renesas Technology Corp

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Section 6 Bus Controller
Rev. 3.00 Sep 15, 2006 page 169 of 988
REJ09B0330-0300
H8S/2350
(Address shift size set to 9 bits)
CS (RAS)
2-CAS type 4-Mbit DRAM
256-kbyte
× 16-bit configuration
9-bit column address
OE
RAS
CAS
UCAS
LCAS
LCAS
HWR (WE)
WE
A9
A8
A8
A7
A7
A6
A6
A5
A5
A4
A4
A3
A3
A2
A2
A1
A1
A0
D15 to D0
D15 to D0
Low address
input: A8 to A0
Column address
input: A8 to A0
Figure 6.19 Example of 2-CAS System Connection
6.5.10
Burst Operation
With DRAM, in addition to full access (normal access) in which data is accessed by outputting a
row address for each access, a fast page mode is also provided which can be used when making a
number of consecutive accesses to the same row address. This mode enables fast (burst) access of
data by simply changing the column address after the row address has been output. Burst access
can be selected by setting the BE bit in MCR to 1.



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