Cypress FM4 Series - Page 220

CHAPTER 6: Low Power Consumption Mode
220 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
Internal Power Supply Status and Reset Status in Deep Standby Mode
This section shows the power supply status of each function in deep standby mode and the reset status
on a deep standby transition reset.
Table 5-3 Internal Power Supply Status and Reset Status in Deep Standby Mode
Power Supply Status
Reset Status
CPU
Off
Initialized
On-chip Flash memory
Off
*1
SRAM0/1
Off
Data not retained
SRAM2
Off *2
*3
RTC
On
Not initialized
HDMI-CEC/Remote Control Reception
On
Not initialized
Low voltage detection circuit
On
Not initialized
GPIO
On
Partly initialized *4,*5
Deep standby control block
On
Not initialized
Peripherals other the above
Off
Initialized
*1: Data in the on-chip Flash memory is retained.
*2: Data in SRAM2 can be retained.
If the setting for retaining data in on-chip SRAM is done, the power supply for SRAM2 is turned on.
*3: If the power supply is turned off, data in SRAM2 is not retained.
If the setting for retaining data in SRAM2 is done, data in SRAM2 is retained.
*4: Bit[4:0] in the PFR0 register, the bit is assigned HDMI-CEC input/output port in the PFRx register, PCRx,
DPDRx, PDIRx, PDORx, ADE, EPFRx, SPSR and PZRx registers are not initialized.
*5: The bit of in the PFRx register other than above are initialized.