R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 377

IC R8C/27 MCU FLASH 32LQFP

R5F21272SNFP#U0

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

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
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
SAMSUNG
Quantity:
300 000
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21272SNFP#U0R5F21272SNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21272SNFP#U0R5F21272SNFP#X6
Manufacturer:
Renesas Electronics America
Quantity:
10 000
R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
19.4.1
19.4.2
The MCU enters CPU rewrite mode and software commands can be acknowledged by setting the FMR01 bit in
the FMR0 register to 1 (CPU rewrite mode enabled). In this case, since the FMR11 bit in the FMR1 register is
set to 0, EW0 mode is selected.
Use software commands to control program and erase operations. The FMR0 register or the status register can
be used to determine when program and erase operations complete.
During auto-erasure, set the FMR40 bit to 1 (erase-suspend enabled) and the FMR41 bit to 1 (request erase-
suspend). Wait for td(SR-SUS) and ensure that the FMR46 bit is set to 1 (read enabled) before accessing the
user ROM area. The auto-erase operation can be restarted by setting the FMR41 bit to 0 (erase restarts).
To enter program-suspend during the auto-program operation, set the FMR40 bit to 1 (suspend enabled) and the
FMR42 bit to 1 (request program-suspend). Wait for td(SR-SUS) and ensure that the FMR46 bit is set to 1 (read
enabled) before accessing the user ROM area. The auto-program operation can be restarted by setting the
FMR42 bit to 0 (program restarts).
The MCU is switched to EW1 mode by setting the FMR11 bit to 1 (EW1 mode) after setting the FMR01 bit to
1 (CPU rewrite mode enabled).
The FMR0 register can be used to determine when program and erase operations complete. Do not execute
commands that use the read status register in EW1 mode.
To enable the erase-suspend function during auto-erasure, execute the block erase command after setting the
FMR40 bit to 1 (erase-suspend enabled). The interrupt to enter erase-suspend should be in interrupt enabled
status. After waiting for td(SR-SUS) after the block erase command is executed, the interrupt request is
acknowledged.
When an interrupt request is generated, the FMR41 bit is automatically set to 1 (requests erase-suspend) and the
auto-erase operation suspends. If an auto-erase operation does not complete (FMR00 bit is 0) after an interrupt
process completes, the auto-erase operation restarts by setting the FMR41 bit to 0 (erasure restarts)
To enable the program-suspend function during auto-programming, execute the program command after setting
the FMR40 bit to 1 (suspend enabled). The interrupt to enter program-suspend should be in interrupt enabled
status. After waiting for td(SR-SUS) after the program command is executed, an interrupt request is
acknowledged.
When an interrupt request is generated, the FMR42 bit is automatically set to 1 (request program-suspend) and
the auto-program operation suspends. When the auto-program operation does not complete (FMR00 bit is 0)
after the interrupt process completes, the auto-program operation can be restarted by setting the FMR42 bit to 0
(programming restarts).
Sep 26, 2008
EW0 Mode
EW1 Mode
Page 358 of 453
19. Flash Memory

Related parts for R5F21272SNFP#U0