R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 313

• Manufacturer Part Number: R5F61665N50FPV
• Description: MCU FLASH 512K ROM 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61665N50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.10.6
The number of column address output cycles can be changed from two to three clock cycles by
setting the CAST bit in DRAMCR. Set the bit according to the DRAM to be used and the
frequency of this LSI so that the CAS pulse width can be optimal.
Figure 9.39 shows a timing example when the number of column address output cycles is set to
three clock cycles.
Figure 9.39 Access Timing Example of Column Address Output Cycles for 3 Clock Cycles
Controlling Column Address Output Cycle
Read
Write
Address bus
Data bus
OE (RD)
Data bus
OE (RD)
RD/WR
LUCAS
LLCAS
RAS
WE
WE
BS
Bφ
T
p
Row address
(RAST = 0)
T
r
High
High
T
c1
Rev. 2.00 Oct. 21, 2009 Page 279 of 1454
Column address
T
c2
Section 9 Bus Controller (BSC)
T
c3
REJ09B0498-0200