R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 340

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24278NVFQU

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; 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

Section 7 Bus Controller (BSC)
Page 310 of 1448
Figure 7.94 Example of Timing for Idle Cycle Insertion in Case of Consecutive Read and
Write Accesses to Continuous Synchronous DRAM Space in RAS Down Mode
Precharge-sel
DQMU, DQML
Address bus
Data bus
CKE
CAS
RAS
WE
φ
PALL ACTV READ
(SDWCD = 1, CAS Latency 2)
address
Column
T
p
Continuous synchronous
DRAM space read
address
address
Row
Row
T
r
T
c1
address
Column
T
cl
High
T
c2
Idle cycle
Continuous synchronous
DRAM space write
NOP
T
External address
i
H8S/2427, H8S/2427R, H8S/2425 Group
T
c1
WRIT
T
REJ09B0565-0100 Rev. 1.00
c2
Jul 22, 2010