Fujitsu FR81S Manuel D’Utilisation
CHAPTER 47: ON CHIP DEBUGER (OCD)
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: ON CHIP DEBUGGER : OCD
FUJITSU SEMICONDUCTOR CONFIDENTIAL
33
2) Communication mode (*1): High-speed UART/phase modulation UART
Reset factor
Difference from when the
OCD tool is not connected
Remarks
Initialization
range
Processing
time
Power-on reset
No
Yes
Causes a transition to the emulator mode
(debug state) after reset is released
RSTX pin input
(irregular)
RSTX pin input
No voltage step-down circuit switch
stabilization wait time (*2)
*: Only recovery from main/sub stop mode or
main/sub watch mode
RSTX pin input (+NMIX
pin input)
Causes a transition to the emulator mode
(debug state) after reset is released
Watchdog reset 0
(irregular)
Watchdog reset 0
Watchdog reset 1
(irregular)
Watchdog reset 1
External power supply
low-voltage detection reset
(irregular)
External power supply
low-voltage detection reset
No voltage step-down circuit switch
stabilization wait time (*2)
*: Only recovery from main/sub stop mode or
main/sub watch mode
Illegal standby mode
transition detection reset
(irregular)
Yes
Causes a transition to the emulator mode
(debug state) after reset is released
Illegal standby mode
transition detection reset
No
Low-voltage detection
(internal power supply
low-voltage detection)
reset
Yes
Causes a transition to the emulator mode
(debug state) after reset is released
Flash security violation
reset
(irregular)
Flash security violation
reset
No
Software reset
(irregular)
Yes
Causes a transition to the emulator mode
(debug state) after reset is released
Software reset
No
MB91520 Series
MN705-00010-1v0-E
2044