HD6417708SF60 Renesas Electronics America, HD6417708SF60 Datasheet - Page 291

• Manufacturer Part Number: HD6417708SF60
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708SF60

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3 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: -

10.3.6
Pseudo-SRAM Direct Connection
When the memory type bits (DRAMTP2-0) in BCR1 are set to 001, physical space area 3
becomes pseudo-SRAM and the pseudo-SRAM interface function that allows pseudo-SRAM to be
connected directly to the SH7708 Series can be used. An interface data width of 16 or 32 bits can
be selected.
With directly connected pseudo-SRAM, the refresh signal and output enable signal are
multiplexed. The signals used for connection are CE, OE/RFSH, WE3, WE2, WE1, and WE0.
WE3 and WE2 are not used with a 16-bit data width.
As access modes, burst access using the static column access function is supported in addition to
ordinary read/write access.
Figure 10.33 shows an example of connection of 4M pseudo-SRAMs with multiplexed OE and
RFSH signals, using a 32-bit data width.
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