HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 158

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 6 Bus Controller
6.2.4
BRCR is an 8-bit readable/writable register that enables address output on bus lines A
enables or disables release of the bus to an external device.
Bit
Modes
1, 2, 6,
and 7
Modes
3 and 4
Mode 5
BRCR is initialized to H'FE in modes 1, 2, 5, 6, and 7, and to H'EE in modes 3 and 4, by a reset
and in hardware standby mode. It is not initialized in software standby mode.
Bit 7—Address 23 Enable (A23E): Enables PA
Writing 0 in this bit enables A
be modified and PA
Bit 7
A23E
0
1
Rev. 2.00 Sep 20, 2005 page 118 of 800
REJ09B0260-0200
Initial value
Read/Write
Initial value
Read/Write
Initial value
Read/Write
Bus Release Control Register (BRCR)
Description
PA
PA
4
A23E
has its ordinary port functions.
R/W
R/W
Address 23 to 20 enable
These bits enable PA
used for A
4
4
—
7
1
1
1
is the A
is an input/output pin
23
A22E
23
R/W
R/W
output from PA
23
—
6
1
1
1
address output pin
to A
20
A21E
address output
R/W
R/W
—
5
1
1
1
7
to PA
4
4
. In modes other than 3, 4, and 5, this bit cannot
4
to be used as the A
A20E
to be
R/W
—
—
4
1
0
1
—
—
—
—
3
1
1
1
Reserved bits
Bus release enable
Enables or disables release
of the bus to an external device
23
address output pin.
—
—
—
—
2
1
1
1
—
—
—
—
1
1
1
1
(Initial value)
23
to A
BRLE
R/W
R/W
R/W
20
0
0
0
0
and