R4F24269NVFQV Renesas Electronics America, R4F24269NVFQV Datasheet - Page 264

• Manufacturer Part Number: R4F24269NVFQV
• Description: MCU 256KB FLASH 64K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24269NVFQV

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 10x10b, 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: -

Section 6 Bus Controller (BSC)
6.7.10
When DRAM with a ×16-bit configuration is connected, the 2-CAS access method is used for the
control signals needed for byte access. Figure 6.40 shows the control timing for 2-CAS access,
and figure 6.41 shows an example of 2-CAS DRAM connection.
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φ
Address bus
RASn (CSn)
UCAS
LCAS
WE (HWR)
OE (RD)
Upper data bus
Lower data bus
Note: n = 2 to 5
Byte Access Control
(Upper Byte Write Access: RAST = 0, CAST = 0)
Figure 6.40 2-CAS Control Timing
T
p
Row address
High
High
T
r
T
c1
Column address
H8S/2426, H8S/2426R, H8S/2424 Group
Write data
High-Z
REJ09B0466-0350 Rev. 3.50
T
c2
Jul 09, 2010