R5F21236KFP#U0 Renesas Electronics America, R5F21236KFP#U0 Datasheet - Page 438

• Manufacturer Part Number: R5F21236KFP#U0
• Description: IC R8C/23 MCU FLASH 48LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/23r

Specifications of R5F21236KFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• 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 ~ 125°C
• Package / Case: 48-LQFP
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
20.2
The flash memory contains a user ROM area and a boot ROM area (reserved area).
Figure 20.1 shows the Flash Memory Block Diagram for R8C/22 Group. Figure 20.2 shows the Flash Memory
Block Diagram for R8C/23 Group.
The user ROM area of R8C/23 Group contains an area which stores a MCU operating program (program ROM)
and the 1-Kbyte block A and B (data flash).
The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite and
standard serial I/O and parallel I/O modes.
When rewriting the block 0 and block 1 in CPU rewrite mode, set the FMR02 bit in the FMR0 register to 1 (rewrite
enables), and when setting the FMR15 bit in the FMR1 register to 0 (rewrite enables), block 0 is rewritable. When
setting the FMR16 bit to 0 (rewrite enables), block 1 is rewritable.
When rewriting the block 2 and block 3 in CPU rewrite mode, set the FMR02 bit in the FMR0 register to 1 (rewrite
enables).
The rewrite control program for standard serial I/O mode is stored in boot ROM area before shipment. The boot
ROM area and the user ROM area share the same address, but have an another memory.
Memory Map
Page 416 of 501
20. Flash Memory