971
User’s Manual U16580EE3V1UD00
Chapter 21
Reset Function
21.1 Features
•
Reset function by RESET input
•
Forced reset function by DCU (refer to
”On-Chip Debug Function (OCD)” on
•
Reset generator (RG) eliminates noise from the RESET pin.
21.2 Configuration
During a system reset, most pins (all except the DCK, DRST, DMS, DDI, DDO, RESET, X2, V
DD10
to
V
DD15
, V
SS10
to V
SS15
, V
DD30
to V
DD37
, V
SS30
to V
SS37
, CV
DD
, CV
SS
, AV
DD
, AV
REF0
, AV
REF1
, AV
SS0
and AV
SS1
pins) enter the high-impedance state.
Therefore, if an external device always requires a defined input level (e.g. external memory) a pull-up
(or pull-down) resistor must be connected to each concerned output pin to prevent signal lines from
floating. If no resistor is connected, the external device may be destroyed when these pins enter the
high-impedance state.
Summary of Contents for V850E/PH2
Page 6: ...6 Preface User s Manual U16580EE3V1UD00...
Page 16: ...16 User s Manual U16580EE3V1UD00...
Page 28: ...28 User s Manual U16580EE3V1UD00...
Page 32: ...32 User s Manual U16580EE3V1UD00...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO...
Page 192: ...192 Chapter 5 Memory Access Control Function PD70F3187 only User s Manual U16580EE3V1UD00 MEMO...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO...
Page 1052: ...1052 User s Manual U16580EE3V1UD00...
Page 1053: ......