h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 211

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

7.1.3
Table 7-1 summarizes the pins of the bus controller.
Table 7-1
7.1.4
Table 7-2 summarizes the registers of the bus controller.
Table 7-2
Notes: 1. Lower 16 bits of the address.
Name
Address strobe
Read
High write
Low write
Name
Bus width control register
Access state control register
Wait control register H
Wait control register L
Bus control register H
Bus control register L
Pin function control register
2. Determined by the MCU operating mode.
Pin Configuration
Register Configuration
Bus Controller Pins
Bus Controller Registers
Symbol
A S
R D
H W R
L W R
Abbreviation
ABWCR
WCRH
WCRL
BCRH
BCRL
ASTCR
PFCR
I/O
Output
Output
Output
Output
Function
Strobe signal indicating that address output on address
bus is enabled.
Strobe signal indicating that external space is being
read.
Strobe signal indicating that external space is to be
written, and upper half (D15 to D8) of data bus is
enabled.
Strobe signal indicating that external space is to be
written, and lower half (D7 to D0) of data bus is
enabled.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Rev. 6.00 Feb 22, 2005 page 151 of 1484
Initial Value
H'08
H'FF/H'00 *
H'FF
H'FF
H'FF
H'D0
H'0D/H'00
Section 7 Bus Controller
2
REJ09B0103-0600
Address *
H'FED0
H'FED1
H'FED2
H'FED3
H'FED4
H'FED5
H'FDEB
1