HD6417727F100V Renesas Electronics America, HD6417727F100V Datasheet - Page 362

• Manufacturer Part Number: HD6417727F100V
• Description: MPU 3V 16K PB-FREE 240-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100V

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 12 Bus State Controller (BSC)
Bits 13 and 12—RAS–CAS Delay (RCD1, RCD0): When synchronous DRAM interface is
selected, sets the bank active read/write command delay time.
Bit 13: RCD1
0
1
Bits 11 and 10—Write-Precharge Delay (TRWL1, TRWL0): The TRWL bits set the
synchronous DRAM write-precharge delay time. This designates the time between the end of a
write cycle and the next bank-active command. This is valid only when synchronous DRAM is
connected. After the write cycle, the next bank-active command is not issued for the period TPC +
TRWL.
Bit 11: TRWL1
0
1
Bits 9 and 8—CAS-Before-RAS Refresh RAS Assert Time (TRAS1, TRAS0): When
synchronous DRAM interface is selected, no bank-active command is issues during the period
TPC + TRAS after an auto-refresh command.
Bit 9: TRAS1
0
1
Bit 7—Reserved: This bit is always read as 0. The write value should always be 0.
Bits 6 to 3—Address Multiplex (AMX3 , AMX2, AMX1, AMX0): The AMX bits specify
address multiplexing for synchronous DRAM. The actual address shift value differs between
synchronous DRAM interface.
Rev.6.00 Mar. 27, 2009 Page 304 of 1036
REJ09B0254-0600
Bit 12: RCD0
0
1
0
1
Bit 10: TRWL0
0
1
0
1
Bit 8: TRAS0
0
1
0
1
Description
1 cycle
2 cycles
3 cycles
4 cycles
Description
1 cycle
2 cycles
3 cycles
Reserved (Setting disabled)
Description
2 cycles
3 cycles
4 cycles
5 cycles
(Initial value)
(Initial value)
(Initial value)