RX21A_15 Datasheet, PDF(88/132 Page) Renesas Technology Corp

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RX21A_15 Datasheet, PDF (88/132 Pages) Renesas Technology Corp – Renesas MCUs

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RX21A Group

5. Electrical Characteristics

5.4.2

Timing of Recovery from Low Power Consumption Modes

Table 5.28 Timing of Recovery from Low Power Consumption Modes

Conditions: VCC = AVCC0 = AVCCA = 1.8 to 3.6 V, VSS = AVSS0 = AVSSA = VREFL = VREFL0 = VREFDSL = 0 V,

Ta = â40 to +105Â°C

Item

Symbol Min.

Typ.

Max.

Unit

Test

Conditions

Recovery time Crystal resonator Main clock oscillator

after

connected to

operating

tSBYMC

ms Figure 5.37

cancellation of

software

standby mode

main clock

oscillator*2

Main clock oscillator and

tSBYPC

3.5

PLL circuit operating

(flash memory, External clock

HOCO power input to main

Main clock oscillator

operating

tSBYEX

Âµs

supplied)

clock oscillator

(SOFTCUT[2:0]

bits = 000b)*1

Main clock oscillator and

PLL circuit operating

tSBYPE

0.5

Sub-clock oscillator operating

tSBYSC

2*3

HOCO clock oscillator operating

tSBYHO

500

Âµs

LOCO clock oscillator operating

tSBYLO

Âµs

Recovery time Crystal resonator Main clock oscillator

after

connected to

operating

tSBYMC

ms Figure 5.37

cancellation of

software

standby mode

main clock

oscillator*2

Main clock oscillator and

tSBYPC

3.5

PLL circuit operating

(flash memory External clock

power supplied, input to main

Main clock oscillator

operating

tSBYEX

Âµs

HOCO power clock oscillator

not supplied)

(SOFTCUT[2:0]

Main clock oscillator and

PLL circuit operating

tSBYPE

0.5

bits = 110b)*1 Sub-clock oscillator operating

tSBYSC

2*3

HOCO clock oscillator operating

tSBYHO

1.2

LOCO clock oscillator operating

tSBYLO

Âµs

Recovery time after cancellation of deep software standby mode tDSBY

ms Figure 5.38

Wait time after cancellation of deep software standby mode

tDSBYWT

0.8

Note 1. The recovery time varies depending on the state of each oscillator when the WAIT instruction is executed. The recovery time

when multiple oscillators are operating varies depending on the operating state of the oscillators that are not selected as the

system clock source, and depends on the time set in the wait control registers corresponding to the oscillators.

Note 2. The indicated value is measured for an 8 MHz crystal resonator.

Note 3. When RCR3.RTCEN = 1, the time will be the time set in the SOSCWTCR register minus 2 s.

R01DS0129EJ0110 Rev.1.10

Aug 28, 2014

Page 88 of 132

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