R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 422

• Manufacturer Part Number: R5F2121AJFP#U0
• Description: MCU FLASH 96K 5K CMOS 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/21r

Specifications of R5F2121AJFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 5K 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
19.6
19.6.1
Parallel I/O mode is used to input and output the required software command, address and data parallel to controls
(read, program and erase) for internal flash memory. Use a parallel programmer which supports this MCU. Contact
the manufacturer of your parallel programmer about the parallel programmer and refer to the user’s manual of your
parallel programmer for details on how to use it.
User ROM area can be rewritten shown in Figure 19.1 and Figure 19.2 in parallel I/O mode.
The ROM code protect function disables to read and rewrite the flash memory. (Refer to 19.3 Functions to
Prevent Rewriting of Flash Memory.)
Parallel I/O Mode
ROM Code Protect Function
Page 404 of 458
19. Flash Memory