HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 261
HD6412373R
Manufacturer Part Number
HD6412373R
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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6.6.4
Table 6.6 shows the pins used for DRAM interfacing and their functions. Since the CS2 to CS5
pins are in the input state after a reset, set the corresponding DDR to 1 when RAS2 to RAS5
signals are output.
Table 6.6
Pin
HWR
CS2
CS3
CS4
CS5
UCAS
LCAS
RD, OE
WAIT
A15 to A0
D15 to D0
Pins Used for DRAM Interface
DRAM Interface Pins
With DRAM
Setting
WE
RAS2/RAS
RAS3
RAS4
RAS5
UCAS
LCAS
OE
WAIT
A15 to A0
D15 to D0
Name
Write enable
Row address strobe 2/
row address strobe
Row address strobe 3
Row address strobe 4
Row address strobe 5
Upper column address
strobe
Lower column address
strobe
Output enable
Wait
Address pins
Data pins
I/O
Output
Output
Output
Output
Output
Output
Output
Output
Input
Output
I/O
Rev.7.00 Mar. 18, 2009 page 193 of 1136
Function
Write enable for DRAM space
access
Row address strobe when area 2
is designated as DRAM space or
row address strobe when areas 2
to 5 are designated as continuous
DRAM space
Row address strobe when area 3
is designated as DRAM space
Row address strobe when area 4
is designated as DRAM space
Row address strobe when area 5
is designated as DRAM space
Upper column address strobe for
16-bit DRAM space access or
column address strobe for 8-bit
DRAM space access
Lower column address strobe
signal for 16-bit DRAM space
access
Output enable signal for DRAM
space access
Wait request signal
Row address/column address
multiplexed output
Data input/output pins
Section 6 Bus Controller (BSC)
REJ09B0109-0700
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