R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 384
R5F21272SNFP#U0
Manufacturer Part Number
R5F21272SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet
1.R5F21272SDFPU0.pdf
(487 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21272SNFP#U0R5F21272SNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 19.9
Figure 19.10
EW0 Mode Operating Procedure
NOTES:
Jump to the rewrite control program which has been
transferred to the RAM.
(The subsequent process is executed by the rewrite
control program in the RAM.)
Transfer a rewrite control program which uses CPU
rewrite mode to the RAM.
Figure 19.9 shows the How to Set and Exit EW0 Mode. Figure 19.10 shows the How to Set and Exit EW1
Mode.
1. Select 5 MHz or below for the CPU clock by the CM06 bit in the CM0 register and bits CM16 to CM17 in the CM1 register.
2. To set the FMR01 bit to 1, write 0 to the FMR01 bit before writing 1. Do not generate an interrupt between writing 0 and 1.
3. Disable the CPU rewrite mode after executing the read array command.
Write to the FMR01 bit in the RAM.
Sep 26, 2008
Set registers
How to Set and Exit EW0 Mode
How to Set and Exit EW1 Mode
EW1 Mode Operating Procedure
(1)
Page 365 of 453
CM0 and CM1
NOTE:
1. To set the FMR01 bit to 1, write 0 to the FMR01 bit before writing 1.
Do not generate an interrupt between writing 0 and 1.
Write 0 to the FMR01 bit before writing 1 (CPU
rewrite mode enabled)
Write 0 to the FMR11 bit before writing 1 (EW1
mode)
Execute software commands
(CPU rewrite mode disabled)
Write 0 to the FMR01 bit
Program in ROM
Rewrite control program
Jump to a specified address in the flash memory
(1)
Write 0 to the FMR01 bit before writing 1
Execute the read array command
(CPU rewrite mode enabled)
Execute software commands
(CPU rewrite mode disabled)
Write 0 to the FMR01 bit
19. Flash Memory
(2)
(3)
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