HD6417708RF100A Renesas Electronics America, HD6417708RF100A Datasheet - Page 235

• Manufacturer Part Number: HD6417708RF100A
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708RF100A

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3.15 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

Bits 9 and 8—CAS-Before-RAS Refresh RAS Assert Time (TRAS1, TRAS0): These bits set the
RAS assert period for CAS-before-RAS refreshing of the DRAM connected to area 2.
In the SH7708, set the same values in the TRAS bits in MCR and DCR.
Bit 9: TRAS1
0
1
Bit 6—Burst Enable (BE): Specifies whether to conduct a burst access of the DRAM connected to
area 2.
Bit 6: BE
0
1
Bits 4 and 3—Address Multiplex (AMX1, AMX0): These bits specify address multiplexing for
the DRAM connected to area 2.
Bit 4: AMX1
0
1
Bit 2—Refresh Control (RFSH): Determines whether or not refreshing of the DRAM connected to
area 2 is performed.
Bit 2: RFSH
0
1
Bit 8: TRAS0
0
1
0
1
Bit 3: AMX0
0
1
0
1
Description
Burst disabled
High-speed page mode access
Description
No refresh
Refresh
Description
2 cycles
3 cycles
4 cycles
5 cycles
Description
8-bit column address product
9-bit column address product
10-bit column address product
11-bit column address product
(Initial value)
(Initial value)
(Initial value)
(Initial value)
215