R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1187

• 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
23.7
Data Protection Function
Each flash memory block has a nonvolatile lock bit. The lock bit is valid when the FMLBE bit is 0
(lock bit is enabled). Programming and erasure can be disabled (locked) individually for each
block using the lock bit. This prevents data from being accidentally programmed or erased. The
status of the block can be confirmed through the lock bit as follows:
• Lock bit data is 0: Locked state (Block cannot be programmed or erased)
• Lock bit data is 1: Unlocked state (Block can be programmed or erased)
The lock bit data becomes 0 (locked state) when the lock bit program command is executed, and
changes to 1 (unlocked state) when the block is erased. The lock bit data cannot be changed to 1
by a command.
The lock bit data can be read out by the read lock bit data command.
When the FMLBE bit is set to 1, the lock bit function is disabled and all blocks enter the unlocked
state (each lock bit data does not change). When the FMLBE bit is cleared to 0, the lock bit
function is enabled (lock bit data is held).
If the block erase command is executed when the FMLBE bit is 1, the specified blocks are erased
regardless of the lock bit data. After erasure has finished, the lock bit of each block is set to 1.
For details on each command, refer to section 23.6, Software Commands.
REJ09B0565-0100 Rev. 1.00
Page 1157 of 1448
Jul 22, 2010