RX21A_15 Datasheet, PDF (81/132 Pages) Renesas Technology Corp – Renesas MCUs

RX21A Group
5. Electrical Characteristics
Table 5.24 Operation Frequency Value (Low-Speed Operating Mode 1)
Conditions: VCC = AVCC0 = AVCCA = 1.8 to 3.6 V, VSS = AVSS0 = AVSSA = VREFL = VREFL0 = VREFDSL = 0 V,
T_a = –40 to +105°C
VCC
Item
Symbol
Unit
1.8 to 2.7 V
2.7 to 3.6 V
Maximum operating
frequency
System clock (ICLK)
FlashIF clock (FCLK)*¹
f_max
4
4
8
MHz
8
Peripheral module clock (PCLKA)
4
8
Peripheral module clock (PCLKB)
4
8
Peripheral module clock (PCLKC)*²
4
8
Peripheral module clock (PCLKD)*³
4
8
Note 1. Programming and erasing the flash memory is impossible.
Note 2. The ∆Σ A/D converter cannot be used.
Note 3. The lower-limit frequency of PCLKD is 1 MHz when the A/D converter is in use.
Table 5.25 Operation Frequency Value (Low-Speed Operating Mode 2)
Conditions: VCC = AVCC0 = AVCCA = 1.8 to 3.6 V, VSS = AVSS0 = AVSSA = VREFL = VREFL0 = VREFDSL = 0 V,
T_a = –40 to +105°C
VCC
Item
Symbol
Unit
1.8 to 2.7 V
2.7 to 3.6 V
Maximum operating
frequency
System clock (ICLK)
FlashIF clock (FCLK)*¹
f_max
32.768
32.768
32.768
kHz
32.768
Peripheral module clock (PCLKA)
32.768
32.768
Peripheral module clock (PCLKB)
32.768
32.768
Peripheral module clock (PCLKC)*²
32.768
32.768
Peripheral module clock (PCLKD)*³
32.768
32.768
Note 1. Programming and erasing the flash memory is impossible.
Note 2. The ∆Σ A/D converter cannot be used.
Note 3. The A/D converter cannot be used.
R01DS0129EJ0110 Rev.1.10
Aug 28, 2014
Page 81 of 132