HD6417032F20 Renesas Electronics America, HD6417032F20 Datasheet - Page 137

• Manufacturer Part Number: HD6417032F20
• Description: IC SUPERH MPU ROMLESS 112QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7030r

Specifications of HD6417032F20

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 112-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

8.2
8.2.1
The bus control register (BCR) is a 16-bit read/write register that selects the functions of areas and
status of bus cycles. It is initialized to H'0000 by a power-on reset, but is not initialized by a
manual reset or in standby mode.
Bit 15—DRAM Enable Bit (DRAME): DRAME selects whether area 1 is used as an external
memory space or DRAM space. 0 sets it as external memory space and 1 sets it as DRAM space.
The setting of the DRAM area control register is valid only when this bit is set to 1.
Bit 15: DRAME
0
1
Bit 14—Multiplexed I/O Enable Bit (IOE): IOE selects whether area 6 is used as external
memory space or an address/data multiplexed I/O area. 0 sets it as external memory space and 1
sets it as address/data multiplexed I/O space. With address/data multiplexed I/O space, the address
and data are multiplexed and input/output is from AD15–AD0.
Bit 14: IOE
0
1
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Register Descriptions
Bus Control Register (BCR)
Description
Area 1 is external memory space
Area 1 is DRAM space
Description
Area 6 is external memory space
Area 6 is an address/data multiplexed I/O area
DRAME
R/W
15
—
—
0
7
0
R/W
IOE
14
—
—
0
6
0
WARP
R/W
13
—
—
0
5
0
RDDTY
R/W
12
—
—
0
4
0
Rev. 7.00 Jan 31, 2006 page 109 of 658
Section 8 Bus State Controller (BSC)
BAS
R/W
11
—
—
0
3
0
10
—
—
—
—
0
2
0
REJ09B0272-0700
—
—
—
—
9
0
1
0
(Initial value)
(Initial value)
—
—
—
—
8
0
0
0