S124 Datasheet, PDF (46/98 Pages) Renesas Technology Corp – 32-bit ARM Cortex-M0+ microcontroller

S124
2. Electrical Characteristics
Table 2.25 Timing of recovery from low power modes (3)
Item
Recovery time
from Software
Standby mode*¹
Low-speed
mode
Test
Symbol Min Typ Max Unit conditions
Crystal
resonator
connected to
main clock
oscillator
System clock source is t_SBYMC -
main clock oscillator
(1 MHz)*²
2
3
ms Figure 2.25
External clock
input to main
System clock source is t_SBYEX -
main clock oscillator
clock oscillator (1 MHz)*³
28 50 μs
System clock source is MOCO (1 MHz)
t_SBYMO -
25 35 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.
Table 2.26 Timing of recovery from low power modes (4)
Item
Symbol Min Typ
Recovery time
from Software
Low-voltage Crystal
mode
resonator
System clock source is t_SBYMC -
2
main clock oscillator
Standby mode*¹
connected to (4 MHz)*²
main clock
oscillator
External clock System clock source is t_SBYEX -
108
input to main main clock oscillator
clock oscillator (4 MHz)*³
System clock source is HOCO (4 MHz)
t_SBYHO -
108
Test
Max Unit conditions
3
ms Figure 2.25
130 μs
130 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.
Table 2.27 Timing of recovery from low power modes (5)
Item
Recovery time
from Software
Standby mode*¹
SubOSC-speed mode
Symbol Min
System clock source is sub-clock t_SBYSC -
oscillator (32.768 kHz)
System clock source is LOCO
(32.768 kHz)
t_SBYLO -
Typ Max
0.85 1
0.85 1.2
Test
Unit conditions
ms Figure 2.25
ms
Note 1. The sub-clock oscillator or LOCO itself continues oscillating in Software Standby mode during Subosc-speed
mode.
R01DS0264EU0100 Rev.1.00
Feb 23, 2016
Page 46 of 95