R5F21356CNFP#U0 Renesas Electronics America, R5F21356CNFP#U0 Datasheet - Page 687

• Manufacturer Part Number: R5F21356CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 52-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/35Cr

Specifications of R5F21356CNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 47
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/35C Group
REJ09B0567-0100 Rev.1.00 Dec. 14, 2009
Page 654 of 725
31.6
31.6.1
Parallel I/O mode is used to input and output software commands, addresses and data necessary to control (read,
program, and erase) the on-chip flash memory.
Use a parallel programmer which supports the MCU. Contact the parallel programmer manufacturer for more
information. Refer to the user’s manual included with your parallel programmer for instructions.
In parallel I/O mode, the user ROM areas shown in Figure 31.1 and Figure 31.2 can be rewritten.
The ROM code protect function prevents the flash memory from being read and rewritten. (Refer to the 31.3.2
ROM Code Protect Function.)
Parallel I/O Mode
ROM Code Protect Function
31. Flash Memory