S124 Datasheet, PDF (45/98 Pages) Renesas Technology Corp – 32-bit ARM Cortex-M0+ microcontroller

S124
2.3.4
Wakeup Time
2. Electrical Characteristics
Table 2.23 Timing of recovery from low power modes (1)
Item
Recovery time High-speed
from Software mode
Standby mode^*1
Symbol Min Typ
Crystal
resonator
System clock source is t_SBYMC -
2
main clock oscillator
connected to (20 MHz)^*2
main clock
oscillator
External clock System clock source is t_SBYEX -
14
input to main main clock oscillator
clock oscillator (20 MHz)^*3
System clock source is HOCO^*4
(HOCO clock is 32 MHz)
t_SBYHO -
43
System clock source is HOCO^*4
(HOCO clock is 48 MHz)
t_SBYHO -
44
System clock source is HOCO^*5
(HOCO clock is 64 MHz)
t_SBYHO -
82
Test
Max Unit conditions
3
ms Figure 2.25
25
μs
52
μs
52
μs
110 μs
System clock source is MOCO
t_SBYMO -
16
25
μs
Note 1. The division ratio of ICLK and PCLKx is 1. The recovery time is determined by the system clock source.
Note 2. The Main Clock Oscillator Wait Control Register (MOSCWTCR) is set to 05h.
Note 3. The Main Clock Oscillator Wait Control Register (MOSCWTCR) is set to 00h.
Note 4. The HOCO clock wait control register (HOCOWTCR) is set to 05h.
Note 5. The HOCO clock wait control register (HOCOWTCR) is set to 06h.
Table 2.24 Timing of recovery from low power modes (2)
Item
Test
Symbol Min Typ Max Unit conditions
Recovery time
from Software
Middle-speed Crystal
mode
resonator
System clock source is t_SBYMC -
2
3
main clock oscillator
Standby mode*¹
connected to
(12 MHz)*²
main clock
oscillator
ms Figure 2.25
External clock System clock source is t_SBYEX -
2.9 10
μs
input to main main clock oscillator
clock oscillator (12 MHz)*³
System clock source is HOCO*⁴
t_SBYHO -
38 50
μs
System clock source is MOCO (8 MHz)
t_SBYMO -
3.5 5.5
μs
Note 1. The division ratio of ICLK and PCLKx is 1. The recovery time is determined by the system clock source.
Note 2. The Main Clock Oscillator Wait Control Register (MOSCWTCR) is set to 05h.
Note 3. The Main Clock Oscillator Wait Control Register (MOSCWTCR) is set to 00h.
Note 4. The system clock is 12 MHz.
R01DS0264EU0100 Rev.1.00
Feb 23, 2016
Page 45 of 95