RA4M1 datasheet(57/130 Pages) RENESAS

57 / 130 page

R01DS0355EJ0100 Rev.1.00

Page 57 of 130

Oct 8, 2019

RA4M1 Group

2. Electrical Characteristics

Note 1.

Programming and erasing the flash memory is not possible.

Note 2.

The 14-bit A/D converter cannot be used.

Note 3.

See section 8, Clock Generation Circuit in User’s Manual for the relationship of frequencies between ICLK, PCLKA, PCLKB,

PCLKC, PCLKD, FCLK.

2.3.2

Clock Timing

Table 2.21

Operation frequency value in Subosc-speed mode

Conditions: VCC = AVCC0 = 1.8 to 5.5 V

Parameter

Symbol

Min

Typ

Max

Unit

Operation

frequency

System clock (ICLK)*3

1.8 to 5.5 V

27.8528

32.768

37.6832

kHz

Flash interface clock (FCLK)*1, *3

1.8 to 5.5 V

27.8528

32.768

37.6832

Peripheral module clock (PCLKA)*3

1.8 to 5.5 V

37.6832

Peripheral module clock (PCLKB)*3

1.8 to 5.5 V

37.6832

Peripheral module clock (PCLKC)*2, *3

1.8 to 5.5 V

37.6832

Peripheral module clock (PCLKD)*3

1.8 to 5.5 V

37.6832

Table 2.22

Clock timing (1 of 2)

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

EXTAL external clock input cycle time

tXcyc

Figure 2.25

EXTAL external clock input high pulse width

tXH

EXTAL external clock input low pulse width

tXL

EXTAL external clock rising time

tXr

EXTAL external clock falling time

tXf

EXTAL external clock input wait time*1

tEXWT

0.3

μs

EXTAL external clock input frequency

fEXTAL

MHz

2.4 ≤ VCC ≤ 5.5

1.8 ≤ VCC < 2.4

1.6 ≤ VCC < 1.8

Main clock oscillator oscillation frequency

fMAIN

MHz

2.4 ≤ VCC ≤ 5.5

1.8 ≤ VCC < 2.4

1.6 ≤ VCC < 1.8

Main clock oscillation stabilization wait time (crystal)*9

tMAINOSCWT

-*9

LOCO clock oscillation frequency

fLOCO

27.8528

32.768

37.6832

kHz

LOCO clock oscillation stabilization time

tLOCO

100

μs

Figure 2.26

IWDT-dedicated clock oscillation frequency

fILOCO

12.75

17.25

kHz

MOCO clock oscillation frequency

fMOCO

6.88

9.2MHz

MOCO clock oscillation stabilization time

tMOCO

μs

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