Datasheet

Section 26 Low-Voltage Detection Circuits
REJ09B0465-0300 Rev. 3.00 Page 857 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
Noise
canceler
Digital filter
Edge detection
circuit
Reset
control circuit
Interrupt
control circuit
LVD2 circuit reset signal
LVD2 circuit interrupt signal
VCC
LVD2
detection
voltage
φloco/8
φloco/4
φloco/2
φloco
+
-
Figure 26.2 Block Diagram of LVD2 Interrupt/Reset Generation Circuit
Noise
canceler
Digital filter
Edge detection
circuit
Reset
control circuit
Interrupt
control circuit
LVD1 circuit reset signal
LVD1 circuit interrupt signal
VCC
φloco/8
φloco/4
φloco/2
φloco
+
-
LVD1
detection
voltage
Figure 26.3 Block Diagram of LVD1 Interrupt/Reset Generation Circuit
Noise
canceler
Digital filter
Edge detection
circuit
Reset
control circuit
LVD0 circuit reset signal
VCC
LVD0
detection
voltage
φloco/8
φloco/4
φloco/2
φloco
+
-
Figure 26.4 Block Diagram of LVD0 Reset Generation Circuit