Datasheet

R01DS0190EJ0100 Rev.1.00 Page 66 of 107
Jun 19, 2013
RX111 Group 5. Electrical Characteristics
5.3 AC Characteristics
5.3.1 Clock Timing
Note 1. The lower-limit frequency of FCLK is 1 MHz during programming or erasing of the flash memory. When using FCLK at below
4 MHz, the frequency can be set to 1 MHz, 2 MHz, or 3 MHz. A non-integer frequency such as 1.5 MHz cannot be set.
Note 2. The frequency accuracy of FCLK should be ±3.5%. Confirm the frequency accuracy of the clock source.
Note 3. The lower-limit frequency of PCLKD is 4 MHz at 2.4 V or above and 1 MHz at below 2.4 V when the A/D converter is in use.
Note 4. The VCC_USB range is 3.0 to 3.6 V when the USB clock is in use.
Note 1. The lower-limit frequency of FCLK is 1 MHz during programming or erasing of the flash memory. When using FCLK at below
4 MHz, the frequency can be set to 1 MHz, 2 MHz, or 3 MHz. A non-integer frequency such as 1.5 MHz cannot be set.
Note 2. The frequency accuracy of FCLK should be ±3.5%.
Note 3. The lower-limit frequency of PCLKD is 4 MHz at 2.4 V or above and 1 MHz at below 2.4 V when the A/D converter is in use.
Note 1. Programming and erasing the flash memory is impossible.
Note 2. The A/D converter cannot be used.
Table 5.19 Operation Frequency Value (High-Speed Operating Mode)
Conditions: VCC = AVCC0 = VCC_USB = 1.8 to 3.6 V, VSS = AVSS0 = VREFL0 = VSS_USB = 0 V, T
a
= –40 to +105°C
Item Symbol
VCC
Unit
1.8 to 2.4 V 2.4 to 2.7 V 2.7 to 3.6 V
When USB
in Use*
4
Maximum operating
frequency
System clock (ICLK)
f
max
8163224MHz
FlashIF clock (FCLK)*
1,
*
2
8163224
Peripheral module clock (PCLKB)
8163224
Peripheral module clock (PCLKD)*
3
8163224
USB clock (UCLK)
f
usb
———48
Table 5.20 Operation Frequency Value (Middle-Speed Operating Mode)
Conditions: VCC = AVCC0 = VCC_USB = 1.8 to 3.6 V, VSS = AVSS0 = VREFL0 = VSS_USB = 0 V, T
a
= –40 to +105°C
Item Symbol
VCC
Unit
1.8 to 2.4 V 2.4 to 2.7 V 2.7 to 3.6 V
Maximum operating
frequency
System clock (ICLK)
f
max
81212MHz
FlashIF clock (FCLK)*
1,
*
2
81212
Peripheral module clock (PCLKB)
81212
Peripheral module clock (PCLKD)*
3
81212
Table 5.21 Operation Frequency Value (Low-Speed Operating Mode)
Conditions: VCC = AVCC0 = VCC_USB = 1.8 to 3.6 V, VSS = AVSS0 = VREFL0 = VSS_USB = 0 V, T
a
= –40 to +105°C
Item Symbol
VCC
Unit
1.8 to 2.4 V 2.4 to 2.7 V 2.7 to 3.6 V
Maximum operating
frequency
System clock (ICLK)
f
max
32.768 kHz
FlashIF clock (FCLK)*
1
32.768
Peripheral module clock (PCLKB)
32.768
Peripheral module clock (PCLKD)*
2
32.768