Figure 17.2 Block Diagram Of Power-On Reset Circuit And Low-Voltage Detection Circuit - Renesas H8 Series Hardware Manual

16-bit single-chip microcomputer

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Low-voltage-detection control register

Low-voltage-detection status register

Reference voltage from BGR

Compared voltage for falling external input voltage

Compared voltage for rising external input voltage

Bit 5 in LVDCR

Figure 17.2 Block Diagram of Power-On Reset Circuit and Low-Voltage Detection Circuit

Section 17 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits

Noise filter

Noise filter

Power-on reset circuit

Rev. 3.00 Sep. 14, 2006 Page 287 of 408

reset signal

Interrupt request

REJ09B0105-0300