HD6417750SBP200 Renesas Electronics America, HD6417750SBP200 Datasheet - Page 550

• Manufacturer Part Number: HD6417750SBP200
• Description: IC SUPERH MPU ROMLESS 256BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750SBP200

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 2.07 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 13 Bus State Controller (BSC)
Power-On Sequence: Regarding use of DRAM after powering on, it is requested that a wait time
(at least 100 μs or 200 μs) during which no access can be performed be provided, followed by at
least the prescribed number (usually 8) of dummy CAS-before-RAS refresh cycles. As the bus
state controller does not perform any special operations for a power-on reset, the necessary power-
on sequence must be carried out by the initialization program executed after a power-on reset.
Rev.7.00 Oct. 10, 2008 Page 464 of 1074
REJ09B0366-0700
CKIO
A25–A0
CSn
RD/WR
RAS
CAS
D63–D0
BS
TRr1
TRr2
Figure 13.25 DRAM Self-Refresh Cycle Timing
TRr3
TRr4
TRr5
Trc
Trc
Trc