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R5F21143SP View Datasheet(PDF) - Renesas Electronics

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R5F21143SP Datasheet PDF : 277 Pages
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R8C/14 Group, R8C/15 Group
6. Voltage Detection Circuit
VCC
VCA27
Internal
Reference
Voltage
+
- Vdet2
VCA26
Noise Filter
+
-
Vdet1
Figure 6.1 Block Diagram of Voltage Detection Circuit
Voltage Detection 2
Signal
VCA1 Register
b3
VCA13 Bit
Voltage Detection 1
Signal
Voltage Detection 1 Circuit
VCA26
fRING-S
Voltage Monitor 1 Reset Generation Circuit
VW1F1 to VW1F0
=00b
=01b
=10b
1/2 1/2 1/2 =11b
VCC +
Internal
Reference
-
Voltage
Voltage
Detection 1
Signal
Voltage detection 1
signal is held “H” when
VCA26 bit is set to “0”
(disabled)
Digital
Filter
VW1C1
VW1C7
VW1C0
VW1C6
VW1C0 to VW1C1, VW1F0 to VW1F1, VW1C6, VW1C7 : Bits in VW1C register
VCA26: Bit in VCA2 register
Figure 6.2 Block Diagram of Voltage Monitor 1 Reset Generation Circuit
Voltage
Monitor 1
Reset
Signal
Rev.2.10 Jan 19, 2006 Page 26 of 253
REJ09B0164-0210
 

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