Input/Output Pins - Hitachi H8S/2378, H8S/2378R Series Hardware Manual

6.2

Input/Output Pins

Table 6.1 summarizes the pin configuration of the bus controller.
Table 6.1 Pin Configuration
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
Symbol I/O
$6
Output
5'
Output
+:5
Output
/:5
Output
&63
Output
&64
Output
&65/
Output
5$65/
5$6*
&66/
Output
5$66/
&$6*
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. 1.0, 09/01, page 107 of 904