R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 180

• Manufacturer Part Number: R5F21346CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/34Cr

Specifications of R5F21346CNFP#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: 43
• 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: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 147 of 723
9.9.3
9.9.4
Since the oscillation stop detection function cannot be used if the XIN clock frequency is below 2 MHz, set bits
OCD1 to OCD0 to 00b.
Consult the oscillator manufacturer to determine the optimal oscillation circuit constants for the user system.
To use the MCU with supply voltage below VCC = 2.7 V, it is recommended to set the CM11 bit in the CM1
register to 1 (on-chip feedback resistor disabled) and connect the feedback resistor to the chip externally.
Oscillation Stop Detection Function
Oscillation Circuit Constants
9. Clock Generation Circuit