SN32F760 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 66
Version 2.0
by the processor itself, memory systems and related controllers, and internal buses.
The power
state of the analog blocks (IHRC, EHS X’TAL, ELS X’TAL, PLL, Flash, LVD, ADC) is determined by the
enable bit of all blocks.
The processor state and registers, peripheral registers, and internal SRAM values are maintained and the logic levels
of the pins remain static.
Wake up the chip from Sleep mode by an interrupt occurs.
The RESET pin has keep functionality in Sleep mode.
The Sleep mode is entered by using the following steps:
1. Write 4 to
2. Execute ARM Cortex-M0 WFI instruction.
4.3.2
DEEP-SLEEP MODE
In Deep-sleep mode, the system clock to the ARM Cortex-M0 core is stopped, and execution of instructions is
suspended.
The clock to the peripheral functions are stopped because the power state of oscillators are powered down, the clock
source are stopped, except RTC or LCD
low speed clock source (ELS X’TAL, ILRC) if used.
Note:
User SHALL decide to power down low speed clock source (ELS X’TAL, ILRC oscillator) or not
if RTC or LCD is enabled.
The processor state and registers, peripheral registers, and internal SRAM values are maintained and the logic levels
of the pins remain static.
All GPIO pins are served as wakeup pins. The user must program the GPIO registers for each pin to set the
appropriate edge polarity for the corresponding wakeup event, only edge sensitive is supported to wakeup MCU. The
system will exit Deep-sleep mode when GPIO indicates a GPIO interrupt to the ARM core. Furthermore, the interrupts
corresponding to each input must be enabled in the NVIC.
The RESET pin has keep functionality in Deep-sleep mode.
The Deep-sleep mode is entered by using the following steps:
1. Write 2 to
2. Execute ARM WFI instruction.
The advantage of the Deep-sleep mode is that can power down clock generating blocks such as oscillators and PLL,
thereby gaining far greater dynamic power savings over Sleep mode. In addition, the Flash can be powered down in
Deep-sleep mode resulting in savings in static leakage power, however at the expense of longer wake-up times for the
Flash memory.
4.3.3
DEEP POWER-DOWN (DPD) MODE
In Deep power-down mode, power (Turn off the on-chip voltage regulator) and clocks are shut off to the entire chip with
the exception of the GPIO pins.
The processor state and registers, peripheral registers, and internal SRAM values are not retained. However, the chip
can retain data in four BACKUP registers, and the status of all GPIO pins can also be latched.
Содержание SN32F755
Страница 218: ...SN32F760 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 218 Version 2 0 22 2 LQFP 64 PIN...
Страница 220: ...SN32F760 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 220 Version 2 0 22 4 QFN 46 PIN...
Страница 221: ...SN32F760 Series 32 Bit Cortex M0 Micro Controller SONiX TECHNOLOGY CO LTD Page 221 Version 2 0 22 5 QFN 33 PIN 5x5...