R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 217

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
18.4.2.1
18.4.2.2
18.4.2.3
18.4.2.4
18.4.2.5
18.4.2.6
18.4.2.7
18.4.2.8
18.4.2.9
Figure 18.5 shows the FMR0 Register. Figure 18.6 shows the FMR1 and FMR4 Registers.
This bit indicates the operating status of the flash memory. The bit is “0” during programming, erasing,
or erase-suspend mode; otherwise, the bit is “1”.
The microcomputer is made ready to accept commands by setting the FMR01 bit to “1” (CPU rewrite
mode).
The Block1 and Block0 do not accept the Program and Block Erase commands if the FMR02 bit is set
to “0” (rewrite disabled).
The Block0 and Block1 are controlled rewriting in the FMR15 and FMR16 bits if the FMR02 bit is set
to “1” (rewrite enabled).
This bit is provided for initializing the flash memory control circuits, as well as for reducing the amount
of current consumed in the flash memory. The flash memory is disabled against access by setting the
FMSTP bit to “1”. Therefore, the FMSTP bit must be written to by a program in other than the flash
memory.
In the following cases, set the FMSTP bit to “1”:
Figure 18.10 shows a flow chart to be followed before and after entering on-chip oscillator mode
(main clock stop). Note that when going to stop or wait mode while the CPU rewrite mode is disabled,
the FMR0 register does not need to be set because the power for the flash memory is automatically
turned off and is turned back on again after returning from stop or wait mode.
This is a read-only bit indicating the status of auto program operation. The bit is set to “1” when a
program error occurs; otherwise, it is cleared to “0”. For details, refer to the description of the 18.4.5
Full Status Check .
This is a read-only bit indicating the status of auto erase operation. The bit is set to “1” when an erase
error occurs; otherwise, it is set to “0”. Refer to 18.4.5 Full Status Check for the details.
Setting this bit to “1” (EW1 mode) places the microcomputer in EW1 mode.
When the FMR02 bit is set to “1” (rewrite enabled) and the FMR15 bit is set to “0” (rewrite enabled),
the Block0 accepts the program command and block erase command.
When the FMR02 bit is set to “1” (rewrite enabled) and the FMR16 bit is set to “0” (rewrite enabled),
the Block1 accepts the program command and block erase command.
•
•
Jan 19, 2006
When flash memory access resulted in an error while erasing or programming in EW0 mode
(FMR00 bit not reset to “1” (ready))
When entering on-chip oscillator mode (main clock stop)
FMR00 Bit
FMR01 Bit
FMR02 Bit
FMSTP Bit
FMR06 Bit
FMR07 Bit
FMR11 Bit
FMR15 Bit
FMR16 Bit
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18. Flash Memory Version