R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 380

• Manufacturer Part Number: R5F21272SNFP#U0
• Description: IC R8C/27 MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21272SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 19.5
Flash Memory Control Register 0
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
5.
6. When setting the FMR01 bit to 0 (CPU rew rite mode disabled), the FMR02 bit is set to 0 (disables rew rite).
0 0
To set this bit to 1, set it to 1 immediately after setting it first to 0. Do not generate an interrupt betw een setting the bit
to 0 and setting it to 1. Enter read array mode and set this bit to 0.
Set this bit to 1 immediately after setting it first to 0 w hile the FMR01 bit is set to 1.
Do not generate an interrupt betw een setting the bit to 0 and setting it to 1.
Set this bit by a program transferred to the RAM.
This bit is set to 0 by executing the clear status command.
This bit is enabled w hen the FMR01 bit is set to 1 (CPU rew rite mode enabled). When the FMR01 bit is set to 0,
w riting 1 to the FMSTP bit causes the FMSTP bit to be set to 1. The flash memory does not enter low -pow er
consumption state nor is it reset.
Sep 26, 2008
b3 b2 b1 b0
FMR0 Register
Bit Symbol
(b5-b4)
Symbol
FMR00
FMR02
FMSTP
FMR06
FMR07
FMR01
FMR0
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—
RY/BY
CPU rew rite mode select bit
Block 0, 1 rew rite enable bit
Flash memory stop bit
Reserved bits
Program status flag
Erase status flag
___
status flag
Address
Bit Name
01B7h
(4)
(4)
(3, 5)
(1)
(2, 6)
0 : Busy (w riting or erasing in progress)
1 : Ready
0 : CPU rew rite mode disabled
1 : CPU rew rite mode enabled
0 : Disables rew rite
1 : Enables rew rite
0 : Enables flash memory operation
1 : Stops flash memory
Set to 0.
0 : Completed successfully
1 : Terminated by error
0 : Completed successfully
1 : Terminated by error
(enters low -pow er consumption state
and flash memory is reset)
After Reset
00000001b
Function
19. Flash Memory
RW
RW
RW
RW
RW
RO
RO
RO