tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 104

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

7.3
Function
RB000
7.3.3
7.3.4
checked by reading VDCR1<VDxF> and VDCR1<VDxSF>.
(VDxLVL), VDCR1<VDxF> is set to "1" and is held in this state. VDCR1<VDxF> is not cleared to "0" when
the supply voltage (VDD) becomes equal to or higher than the detection voltage (VDxLVL).
To clear VDCR1<VDxF>, "0" must be written to it.
(VDxLVL), VDCR1<VDxSF> is set to "1". When the supply voltage (VDD) becomes equal to or higher than
the detection voltage (VDxLVL), VDCR1<VDxSF> is cleared to "0".
Selecting the detection voltage level
Voltage detection flag and voltage detection status flag
Note 1: When the supply voltage (VDD) becomes lower than the detection voltage (VDxLVL) in the STOP, IDLE0 or
Note 2: Depending on the voltage detection timing, the voltage detection status flag (VDxSF) may be changed earlier
Select a detection voltage at VDCR1<VDxLVL>.
The magnitude relation between the supply voltage (VDD) and the detection voltage (VDxLVL) can be
If VDCR2<VDxEN> is set at "1", when the supply voltage (VDD) becomes lower than the detection voltage
When VDCR2<VDxEN> is cleared to "0" after VDCR1<VDxF> is set to "1", the previous state is still held.
If VDCR2<VDxEN> is set at "1", when the supply voltage (VDD) becomes lower than the detection voltage
Unlike VDCR1<VDxF>, VDCR1<VDxSF> does not hold the set state.
Voltage detection reset signal
SLEEP0 mode, the voltage detection flag and the voltage detection status flag are changed after the oper-
ation mode is returned to NORMAL or SLOW mode.
than the voltage detection flag (VDxF) by a maximum of 2/fcgck[s].
Detection voltage level
VDCR2<VDxEN>
VDD level
Figure 7-3 Voltage Detection Reset Signal
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TMP89FM82T