tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 246

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA001
16.3
is not used.
renders the UART unusable. Setting POFFCR1<UART0EN> to "1" enables the basic clock supply to UART0 and
renders the UART usable.
UART for the first time, be sure to set POFFCR1<UART0EN> to "1" in the initial setting of the program (before the
UART control register is operated).
pectedly.
UART0 has a low power consumption register (POFFCR1) that saves power consumption when the UART function
Setting POFFCR1<UART0EN> to "0" disables the basic clock supply to UART0 to save power. Note that this
After reset, POFFCR1<UART0EN> is initialized to "0", and this renders the UART unusable. When using the
Do not change POFFCR1<UART0EN> to "0" during the UART operation, otherwise UART0 may operate unex-
Low Power Consumption Function
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TMP89FM42A