upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 785
upd70f3402
Manufacturer Part Number
upd70f3402
Description
32-/16-bit Single-chip Microcontroller With Can Interface
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3402.pdf
(852 pages)
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24.4 Operation of Low-Voltage Detector
Depending on the setting of the LVIMD bit, an interrupt signal (INTLVI) or an internal reset signal is
generated.
How to specify each operation is described below, together with timing charts.
24.4.1 To use for internal reset signal
<To start operation>
<1> Mask the interrupt of LVI.
<2> Select the voltage to be detected by using the LVIS0 bit.
<3> Set the LVION bit to 1 (to enable operation).
<4> Insert a wait cycle of 0.1 ms (TYP) (target value) or more by software.
<5> By using the LVIF bit, check if the supply voltage > detected voltage.
<6> Set the LVIMD bit to 1 (to generate an internal reset signal).
Caution:
If LVIMD is set to 1, the contents of the LVIM and LVIS registers cannot be changed
until a reset request other than LVI is generated.
User’s Manual U16702EE3V2UD00
Chapter 24 Low-Voltage Detector
785
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