HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 514

• 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. Bus State Controller (BSC)
Address Multiplexing: When area 3 is designated as DRAM interface, address multiplexing is
always performed in accesses to DRAM. This enables DRAM, which requires row and column
address multiplexing, to be connected to this LSI without using an external address multiplexer
circuit. Any of the five multiplexing methods shown below can be selected, by setting bits
AMXEXT and AMX2–0 in MCR. The relationship between the AMXEXT and AMX2–0 bits and
address multiplexing is shown in table 13.14. The address output pins subject to address
multiplexing are A17 to A1. The address signals output by pins A25 to A18 are undefined.
Table 13.14 Relationship between AMXEXT and AMX2–0 Bits and Address Multiplexing
AMXEXT
0
Other settings
Rev.4.00 Oct. 10, 2008 Page 414 of 1122
REJ09B0370-0400
AMX2
0
1
Setting
AMX1
0
1
0
AMX0
0
1
0
1
0
Number
of Column
Address
Bits
8 bits
9 bits
10 bits
11 bits
12 bits
Reserved
Output Timing
Column address
Row address
Column address
Row address
Column address
Row address
Column address
Row address
Column address
Row address
—
A1–A13
A1–A13
A9–A21
A1–A13
A10–A22
A1–A13
A11–A23
A1–A13
A12–A24
A1–A13
A13–A25
—
External Address Pins
A14
A14
A22
A14
A23
A14
A24
A14
A25
A14
A14
—
A15
A15
A23
A15
A24
A15
A25
A15
A15
A15
A15
—
A16
A16
A24
A16
A25
A16
A16
A16
A16
A16
A16
—
A17
A17
A25
A17
A17
A17
A17
A17
A17
A17
A17
—