R5F21226JFP#U0 Renesas Electronics America, R5F21226JFP#U0 Datasheet - Page 444
![IC R8C/22 MCU FLASH 48LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21226JFP#U0
Manufacturer Part Number
R5F21226JFP#U0
Description
IC R8C/22 MCU FLASH 48LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/22r
Datasheet
1.R5F21237DFPU0.pdf
(551 pages)
Specifications of R5F21226JFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
For Use With
R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21226JFP#U0R5F21226JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21226JFP#U0R5F21226JFP#V0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
20.4.1
20.4.2
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 a program and erase operations. The FMR0 register or the status register can
determine status when program and erase operation complete.
When entering an erase-suspend, set the FMR40 bit to 1 (enables suspend) and the FMR41 bit to 1 (requests
erase-suspend). Wait for td(SR-SUS) and ensure that the FMR46 bit is set to 1 (enables reading) before
accessing the user ROM area. The auto-erase operation restarts by setting the FMR41 bit to 0 (erase restarts).
When entering a program-suspend during the auto-program, set the FMR40 bit to 1 (enables suspend) and the
FMR42 bit to 1 (requests program-suspend). Wait for td(SR-SUS) and ensure that the FMR46 bit is set to 1
(enables reading) before accessing the user ROM area. The auto-program operation restarts by setting the
FMR42 bit to 0 (program restarts).
The MCU enters 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 determine status when program and erase operation complete. Do not execute
commands of the read status register in EW1 mode.
To enable the erase-suspend function during the auto-erase, execute the block erase command after setting the
FMR40 bit to 1 (enables suspend). The interrupt to enter an erase-suspend should be in interrupt enabled status.
After passing td(SR-SUS) since the block erase command is executed, an 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 is halted. If the auto-erase operation does not complete (FMR00 bit is 0) when the interrupt
process completes, the auto-erase operation restarts by setting the FMR41 bit to 0 (erase restarts)
To enable the program-suspend function during the auto-program, execute the program command after setting
the FMR40 bit to 1 (enables suspend). The interrupt to enter a program-suspend should be in interrupt enabled
status. After waiting for td(SR-SUS) since the program command is executed, an interrupt request is
acknowledged.
When an interrupt request is generated, the FMR42 bit is automatically set to 1 (requests 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 restarts by setting the FMR42 bit to 0
(program restarts).
EW0 Mode
EW1 Mode
Page 422 of 501
20. Flash Memory
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