JAJSG18C August 2014 – August 2018 MSP430FR6927 , MSP430FR69271 , MSP430FR6928 , MSP430FR6977 , MSP430FR6979 , MSP430FR69791
PRODUCTION DATA.
Peripherals can be in different states that impact the achievable power modes of the device. The states depend on the operational modes of the peripherals (see Table 6-2). The states are:
If the CPU requests a power mode that does not support the current state of all active peripherals, the device does not enter the requested power mode and instead enters a power mode that still supports the current state of the peripherals, unless an external clock is used. If an external clock is used, the application must ensure that the correct frequency range for the requested power mode is selected.
PERIPHERAL | IN HIGH-FREQUENCY STATE(1) | IN LOW-FREQUENCY STATE(2) | IN UNCLOCKED STATE(3) |
---|---|---|---|
WDT | Clocked by SMCLK | Clocked by ACLK | Not applicable |
DMA(4) | Not applicable | Not applicable | Waiting for a trigger |
RTC_C | Not applicable | Clocked by LFXT | Not applicable |
LCD_C | Not applicable | Clocked by ACLK or VLOCLK | Not applicable |
Timer_A, TAx | Clocked by SMCLK or
clocked by external clock >50 kHz |
Clocked by ACLK or
clocked by external clock ≤50 kHz. |
Clocked by external clock ≤50 kHz. |
Timer_B, TBx | Clocked by SMCLK or
clocked by external clock >50 kHz |
Clocked by ACLK or
clocked by external clock ≤50 kHz |
Clocked by external clock ≤50 kHz |
eUSCI_Ax in UART mode | Clocked by SMCLK | Clocked by ACLK | Waiting for first edge of START bit |
eUSCI_Ax in SPI master mode | Clocked by SMCLK | Clocked by ACLK | Not applicable |
eUSCI_Ax in SPI slave mode | Clocked by external clock >50 kHz | Clocked by external clock ≤50 kHz | Clocked by external clock ≤50 kHz |
eUSCI_Bx in I2C master mode | Clocked by SMCLK or
clocked by external clock >50 kHz |
Clocked by ACLK or
clocked by external clock ≤50 kHz |
Not applicable |
eUSCI_Bx in I2C slave mode | Clocked by external clock >50 kHz | Clocked by external clock ≤50 kHz | Waiting for START condition or
clocked by external clock ≤50 kHz |
eUSCI_Bx in SPI master mode | Clocked by SMCLK | Clocked by ACLK | Not applicable |
eUSCI_Bx in SPI slave mode | Clocked by external clock >50 kHz | Clocked by external clock ≤50 kHz | Clocked by external clock ≤50 kHz |
ADC12_B | Clocked by SMCLK or by MODOSC | Clocked by ACLK | Waiting for a trigger |
REF_A | Not applicable | Not applicable | Always |
COMP_E | Not applicable | Not applicable | Always |
CRC(5) | Not applicable | Not applicable | Not applicable |
MPY(5) | Not applicable | Not applicable | Not applicable |
AES(5) | Not applicable | Not applicable | Not applicable |