R5F61668RD50FPV Renesas Electronics America, R5F61668RD50FPV Datasheet - Page 351

• Manufacturer Part Number: R5F61668RD50FPV
• Description: MCU 3V 1024K I-TEMP 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668RD50FPV

• 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: 1MB (1M x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

9.11.9
When the SDRAM space is read, the read data settling cycle can be inserted for one cycle using
the clock suspend mode. To enter the clock suspend mode, set the CKSPE bit in SDCR and the
OEE bit in DRAMCR to 1and enable the CKE pin.
Figure 9.67 shows a read timing example when CKSPE = 1.
Precharge-sel
Address bus
Controlling Clock Suspend Insertion
D15 to D8
SDRAMφ
Figure 9.67 Read Timing Example when CKSPE = 1 (CAS Latency = 2)
D7 to D0
DQMLU
DQMLL
RD/WR
RAS
CAS
CKE
WE
CS
BS
PALL
T
Row address
p
address
ACTV
Row
T
r
READ
T
c1
Column address 1
T
cl
NOP
T
sp
T
c2
Rev. 2.00 Sep. 24, 2008 Page 317 of 1468
READ
T
c1
Column address 2
Section 9 Bus Controller (BSC)
T
cl
T
NOP
sp
REJ09B0412-0200
T
c2