Renesas R8C/15 Información técnica Pagina 33

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R8C/14 Group, R8C/15 Group 5. Reset
Rev.2.10 Jan 19, 2006 Page 19 of 253
REJ09B0164-0210
5. Reset
There are resets: hardware reset, power-on reset, voltage monitor 1 reset, voltage monitor 2 reset,
watchdog timer reset and software reset. Table 5.1 lists the Reset Name and Factor.
Figure 5.1 Block Diagram of Reset Circuit
Table 5.1 Reset Name and Factor
Reset Name Factor
Hardware Reset Input voltage of RESET
pin is held “L”
Power-On Reset VCC rises
Voltage Monitor 1 Reset VCC falls (monitor voltage : Vdet1)
Voltage Monitor 2 Reset VCC falls (monitor voltage : Vdet2)
Watchdog Timer Reset Underflow of watchdog timer
Software Reset Write “1” to PM03 bit in PM0 register
RESET
Power-On
Reset Circuit
Voltage
Detection
Circuit
Watchdog
Timer
CPU
Voltage Monitor 1 Reset
SFR
VCA26,
VW1C0 and
VW1C6 bits
SFR
VCA13, VCA27,
VW1C1, VW1C2,
VW1F0, VW1F1, VW1C7,
VW2C2 and VW2C3 bits
Pin, CPU and
SFR other than
above
VCC
Hardware Reset
Power-On Reset
Voltage Monitor 2 Reset
Watchdog Timer
Reset
Software Reset
VCA13 : Bit in VCA1 register
VCA26, VCA27 : Bits in VCA2 register
VW1C0 to VW1C2, VW1F0, VW1F1, VW1C6, VW1C7 : Bits in VW1C register
VW2C2, VW2C3 bits : Bits in VW2C register
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