tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 256

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

17.3 Low Power Consumption Function
17. Synchronous Serial Interface (SIO)
RA001
17.3 Low Power Consumption Function
not being used.
this renders the serial interface unusable. Setting POFFCR2<SIO0EN> to "1" enables the basic clock supply to serial
interface 0 and allows the serial interface to operate.
the serial interface for the first time, be sure to set POFFCR2<SIO0EN> to "1" in the initial setting of the program
(before the serial interface control registers are operated).
operate unexpectedly.
Serial interface 0 has the low power consumption registers (POFFCR2) that save power when the serial interface is
Setting POFFCR2<SIO0EN> to "0" disables the basic clock supply to serial interface 0 to save power. Note that
After reset, POFFCR2<SIO0EN> are initialized to "0", and this renders the serial interface unusable. When using
Do not change POFFCR2<SIO0EN> to "0" during the serial interface operation. Otherwise serial interface 0 may
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