HD6417708SF60V Renesas Electronics America, HD6417708SF60V Datasheet - Page 262

• Manufacturer Part Number: HD6417708SF60V
• Description: IC SUPERH MPU ROMLESS 208LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708SF60V

• 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: 208-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

Address Multiplexing: When areas 2 and 3 are designated as DRAM space, address multiplexing
is always performed in accesses to DRAM. This enables DRAM, which requires row and column
address multiplexing, to be connected directly to the SH7708 Series without using an external
address multiplexer circuit. Any of the four multiplexing methods shown below can be selected by
setting bits AMX1 and AMX0 in MCR for area 3 DRAM, or bits AMX1 and AMX0 in DCR for
area 2 DRAM. The relationship between bits AMX1 and AMX0 and address multiplexing is
shown in table 10.12. The address output pins subject to address multiplexing are A15 to A1. Pins
A25 to A16 carry the original address.
Table 10.12 Relationship between AMX1-0 and Address Multiplexing
AMX1
0
0
1
1
242
Setting
AMX0
0
1
0
1
Number of Column
Address Bits
8 bits
9 bits
10 bits
11 bits
Output Timing
Column address
Row address
Column address
Row address
Column address
Row address
Column address
Row address
External Address Pins
A1 to A14
A9 to A22
A1 to A14
A10 to A23
A1 to A14
A11 to A24
A1 to A14
A12 to A25
A15
A23
A15
A24
A15
A25
A15
A15