R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 456

• Manufacturer Part Number: R5F21238DFP#U0
• Description: IC R8C/23 MCU FLASH 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238DFP#U0

• Core Size: 16/32-Bit
• Program Memory Size: 64KB (64K x 8)
• Peripherals: POR, Voltage Detect, WDT
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Number Of I /o: 41
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Embedded Interface Type: CAN, I2C, UART
• Rohs Compliant: Yes
• Cpu Family: R8C
• Device Core Size: 16b
• Frequency (max): 20MHz
• Interface Type: I2C/UART
• Total Internal Ram Size: 3KB
• # I/os (max): 41
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 12-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 20.14
20.4.3.5
If writing 20h in the first bus cycle and D0h to the given address of a block in the second bus cycle, and an auto
erase operation (erase and verify) will start.
The FMR00 bit in the FMR0 register can determine whether auto erasing has completed.
The FMR00 bit is set to 0 during auto erasing and set to 1 when auto erasing completes.
The FMR07 bit in the FMR0 register can determine the result of auto erasing after auto erasing has completed.
(Refer to 20.4.5 Full Status Check)
When the FMR02 bit in the FMR0 register is set to 0 (disable rewriting) or the FMR02 bit is set to 1 (rewrite
enables) and the FMR15 bit in the FMR1 register is set to 1 (disable rewriting), the block erase command on
block 0 is not acknowledged. When the FMR16 bit is set to 1 (disable rewriting), the block erase command on
block 1 is not acknowledged.
Do not use the block erase command during program-suspend.
Figure 20.14 shows the Block Erase Command (When Erase-Suspend Function Disabled). Figure 20.15 shows
the Block Erase Command (When Erase-Suspend Function Enabled).
In EW1 mode, do not execute this command on any address at which the rewrite control program is allocated.
In EW0 mode, the MCU enters read status register mode at the same time auto erasing starts and the status
register can be read. The status register bit 7 (SR7) is set to 0 at the same time auto erasing starts and set back to
1 when auto erasing completes. In this case, the MCU remains in read status register mode until the read array
command is written next.
Block Erase
Block Erase Command (When Erase-Suspend Function Disabled)
Page 434 of 501
Write the command code 20h
Write ‘D0h’ to the given block
Block erase completed
Full status check
FMR00 = 1?
address
Start
Yes
No
20. Flash Memory