R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 230

• 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)
7.5.2
Table 7.3 shows the data buses used and valid strobes for the access spaces.
In a read, the RD signal is valid for both the upper and the lower half of the data bus. In a write,
the HWR signal is valid for the upper half of the data bus, and the LWR signal for the lower half.
Table 7.3
Note: Hi-Z: High-impedance state
7.5.3
(1)
Figure 7.10 shows the bus timing for an 8-bit, 2-state access space. When an 8-bit access space is
accessed, the upper half (D15 to D8) of the data bus is used. The LWR pin is always fixed high.
Wait states can be inserted.
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Area
8-bit access
space
16-bit access
space
8-Bit, 2-State Access Space
Invalid: Input state; input value is ignored.
Valid Strobes
Basic Timing
Data Buses Used and Valid Strobes
Access
Size
Byte
Byte
Word
Read/
Write
Read
Write
Read
Write
Read
Write
Address
⎯
⎯
Even
Odd
Even
Odd
⎯
⎯
Valid
Strobe
RD
HWR
RD
HWR
LWR
RD
HWR, LWR
Upper Data Bus
(D15 to D8)
Valid
Valid
Invalid
Valid
Hi-Z
Valid
Valid
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Lower Data
Bus (D7 to D0)
Invalid
Hi-Z
Invalid
Valid
Hi-Z
Valid
Valid
Valid
Jul 22, 2010