R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1182

• 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

H8S/2427, H8S/2427R, H8S/2425 Group
Section 23 Flash Memory
23.6.5
Block Erase
Write H'20xx in the first bus cycle and H' D0xx to the lowest address (an even address) of the
target block in the second bus cycle; automatic erasure (erasing data and verifying the erased
status) starts in the specified block.
Completion of automatic erasure can be checked through the FMRDY bit in FLMSTR.
The FMRDY bit is 0 (busy) during automatic erasure and becomes 1 (ready) when erasure is
completed.
After automatic erasure is completed, the result can be checked through the FMERSF bit in
FLMSTR (refer to section 23.9, Full Status Check).
Figure 23.5 shows a flowchart of the block erase command processing.
In the EW0 mode, the read status register mode is entered as soon as automatic erasure starts, and
the status register can be read. The SR7 bit in the status register becomes 0 when automatic
erasure starts and returns to 1 when erasure is completed. In this case, the flash memory stays in
the read status register mode until a read array command is issued. If an erase error occurs, repeat
a sequence of the clear status register command -> block erase command at least three times until
no erase error occurs.
Page 1152 of 1448
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010