HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 457

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

13.2.2
Bus control register 2 (BCR2) is a 32-bit readable/writable register that specifies the bus width for
each area, and whether a 16-bit port is used.
BCR2 is initialized to H'3FFC by a power-on reset, but is not initialized by a manual reset or in
standby mode. External memory space other than area 0 should not be accessed until register
initialization is completed.
Note:
Bits 15 and 14—Area 0 Bus Width (A0SZ1, A0SZ0): These bits sample the external pins (MD3
and MD4) that specify the bus size in a power-on reset. They are read-only bits.
Bit 15: MD4
0
1
Initial value:
Initial value:
*
R/W:
R/W:
Bus Control Register 2 (BCR2)
Bit:
Bit:
These bits sample the values of the external pins that specify the area 0 bus size.
A0SZ1
A3SZ1
0/1*
R/W
15
R
7
1
Bit 14: MD3
0
1
0
1
A0SZ0
A3SZ0
0/1*
R/W
14
R
6
1
A6SZ1
A2SZ1
R/W
R/W
13
1
1
5
Bus Width
Reserved (Setting prohibited)
8 bits
16 bits
32 bits
A6SZ0
A2SZ0
R/W
R/W
12
1
4
1
Rev.4.00 Oct. 10, 2008 Page 357 of 1122
A5SZ1
A1SZ1
R/W
R/W
11
1
3
1
13. Bus State Controller (BSC)
A5SZ0
A0SZ0
R/W
R/W
10
1
2
1
A4SZ1
REJ09B0370-0400
R/W
—
—
9
1
1
0
PORTEN
A4SZ0
R/W
R/W
8
1
0
0