R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1184

• 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 23 Flash Memory
23.6.6
This command checks if a block is blank (the erased state).
Write H'25xx in the first bus cycle and H'D0xx to the lowest address (an even address) of the
target block in the second bus cycle; the check result will be stored in the FMERSF bit in
FLMSTR. After the FMRDY bit in FLMSTR has become 1 (ready), read the FMERSF bit.
Figure 23.6 shows a flowchart of the block blank check command processing.
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Block Blank Check
Figure 23.6 Flowchart of Block Blank Check Command Processing
Note: Write the command code and data to even addresses.
Write command code "H'25xx".
Write H'D0xx to the lowest
address of the block.
FMRDY = 1?
FMERSF = 0?
Blank
Start
YES
YES
NO
NO
Not blank
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010