D12674RVFQ33D Renesas Electronics America, D12674RVFQ33D Datasheet - Page 188

• Manufacturer Part Number: D12674RVFQ33D
• Description: MCU 3V 0K I-TEMP 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of D12674RVFQ33D

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: IrDA, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412674RVFQ33D; HD6412674RVFQ33D

Section 6 Bus Controller (BSC)
6.3.7
BCR is used for idle cycle settings, selection of the external bus released state protocol, enabling
or disabling of the write data buffer function, and enabling or disabling of WAIT pin input.
Bit
15
14
13
12
11
Rev. 3.00 Mar 17, 2006 page 136 of 926
REJ09B0283-0300
Bit Name
BRLE
BREQOE
—
IDLC
ICIS1
Bus Control Register (BCR)
Initial Value
0
0
0
1
1
R/W
R/W
R/W
R/W
R/W
R/W
Description
External Bus Release Enable
Enables or disables external bus release.
0: External bus release disabled
1: External bus release enabled
BREQO Pin Enable
Controls outputting the bus request signal
(BREQO) to the external bus master in the
external bus released state, when an internal
bus master performs an external address space
access, or when a refresh request is generated.
0: BREQO output disabled
1: BREQO output enabled
Reserved
This bit can be read from or written to.
However, the write value should always be 0.
Idle Cycle State Number Select
Specifies the number of states in the idle cycle
set by ICIS2 to ICIS0.
0: Idle cycle comprises 1 state
1: Idle cycle comprises 2 states
Idle Cycle Insert 1
When consecutive external read cycles are
performed in different areas, an idle cycle can
be inserted between the bus cycles.
0: Idle cycle not inserted
1: Idle cycle inserted
BREQ, BACK, and BREQO pins can be used
as I/O ports
BREQO pin can be used as I/O port