r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 133

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
9.8
9.8.1
9.8.2
The oscillation stop detection function cannot be used when the XIN clock frequency is below 2 MHz. In this
case, set bits OCD1 and OCD0 in the OCD register to 00b.
Consult the oscillator manufacturer to determine the optimal oscillation circuit constants for the user system.
When the MCU is operated with the power supply voltage (VCC) below 2.7 V, set the CM11 bit in the CM1
register to 1 (on-chip feedback resistor disabled), and connect an external feedback resistor to the chip.
Notes on Clock Generation Circuit
Oscillation Stop Detection Function
Oscillation Circuit Constants
Preliminary document
Specifications in this document are tentative and subject to change.
9. Clock Generation Circuit
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