HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 207

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.2
Table 6.1 shows the pin configuration of the bus controller.
Table 6.1
Name
Address strobe
Read
High write/write enable
Low write
Chip select 0
Chip select 1
Chip select 2/
row address strobe 2/
row address strobe *
Chip select 3/
row address strobe 3/
column address strobe *
Input/Output Pins
Pin Configuration
1
1
Symbol
AS
RD
HWR/WE
LWR
CS0
CS1
CS2/
RAS2/
RAS *
CS3/
RAS3/
CAS *
1
1
I/O
Output
Output
Output
Output
Output
Output
Output
Output
Function
Strobe signal indicating that normal space
is accessed and address output on
address bus is enabled.
Strobe signal indicating that normal space
is being read.
Strobe signal indicating that normal space
is written to, and upper half (D15 to D8) of
data bus is enabled or DRAM space write
enable signal.
Strobe signal indicating that normal space
is written to, and lower half (D7 to D0) of
data bus is enabled.
Strobe signal indicating that area 0 is
selected.
Strobe signal indicating that area 1 is
selected
Strobe signal indicating that area 2 is
selected, DRAM row address strobe signal
when area 2 is DRAM space or areas 2 to
5 are set as continuous DRAM space, or
row address strobe signal of the
synchronous DRAM when the
synchronous DRAM interface is selected.
Strobe signal indicating that area 3 is
selected, DRAM row address strobe signal
when area 3 is DRAM space, or column
address strobe signal of the synchronous
DRAM when the synchronous DRAM
interface is selected.
Rev.7.00 Mar. 18, 2009 page 139 of 1136
Section 6 Bus Controller (BSC)
REJ09B0109-0700