R5F212A8SNFP#U0 Renesas Electronics America, R5F212A8SNFP#U0 Datasheet - Page 529

• Manufacturer Part Number: R5F212A8SNFP#U0
• Description: IC R8C/2A MCU FLASH 64LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/2Ar

Specifications of R5F212A8SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 55
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K5212D8S001BE - KIT STARTER FOR R8C/2DR0K5212D8S000BE - KIT DEV FOR R8C/2D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/2A Group, R8C/2B Group
Rev.2.00
REJ09B0324-0200
Figure 20.14
20.4.3.5
When 20h is written in the first bus cycle and D0h is written to a given address of a block in the second bus
cycle, an auto-erase operation (erase and verify) of the specified block starts.
The FMR00 bit in the FMR0 register can be used to determine whether auto-erasure has completed.
The FMR00 bit is set to 0 during auto-erasure and set to 1 when auto-erasure completes.
The FMR07 bit in the FMR0 register can be used to determine the result of auto-erasure after auto-erasure has
completed (refer to 20.4.5 Full Status Check).
When the FMR02 bit in the FMR0 register is set to 0 (rewriting disabled), the block erase commands targeting
blocks 0 to 3 are not acknowledged. When the FMR02 bit is set to 1 (rewriting enabled) and the FMR15 bit in
the FMR1 register is set to 1 (rewriting disabled), the block erase commands targeting block 0 are not
acknowledged. When the FMR16 bit is set to 1 (rewriting disabled), block erase commands targeting block 1
are 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 for any address to which a rewrite control program is allocated.
In EW0 mode, the MCU enters read status register mode at the same time auto-erasure starts and the status
register can be read. The status register bit 7 (SR7) is set to 0 at the same time auto-erasure starts and set back to
1 when auto-erasure completes. In this case, the MCU remains in read status register mode until the next read
array command is written.
Nov 26, 2007
Block Erase
Block Erase Command (When Erase-Suspend Function Disabled)
Page 507 of 580
Write the command code 20h
Write D0h to a given block
Block erase completed
Full status check
FMR00 = 1?
address
Start
Yes
No
20. Flash Memory