h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 193

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

6.1.3
Table 6.1 summarizes the pins of the bus controller.
Table 6.1
6.1.4
Table 6.2 summarizes the registers of the bus controller.
Table 6.2
Note:
Name
Address strobe
I/O select
Read
Write
Wait
Name
Bus control register
Wait state control register
* Lower 16 bits of the address.
Pin Configuration
Register Configuration
Bus Controller Pins
Bus Controller Registers
Symbol
AS
IOS
RD
WR
WAIT
Abbreviation
BCR
WSCR
I/O
Output
Output
Output
Output
Input
Function
Strobe signal indicating that address output on
address bus is enabled (when IOSE bit is 0)
I/O select signal (when IOSE bit is 1)
Strobe signal indicating that external space is
being read
Strobe signal indicating that external space is
being written to, and that data bus is enabled
Wait request signal when external 3-state access
space is accessed
R/W
R/W
R/W
Rev. 4.00 Jun 06, 2006 page 139 of 1004
Initial Value
H'D7
H'33
Section 6 Bus Controller
REJ09B0301-0400
Address *
H'FFC6
H'FFC7