R20UT2767ED0130 Rev.1.30
11
2018-11-23
Chapter 5 Debug and Programming interface
For connection of the microcontroller debug and flash programming tools, the
connector CN19 is provided.
The signal connection of the connector CN19 is shown in the picture below:
CN19 pin
Device Port
Device signal
1
JP0_2
DCUTCK / LPDCLK
2
GND
GND
3
JP0_4
DCUTRST
4
FLMD0
FLMD0
5
JP0_1
DCUTDO / LPDO
6
P10_8*
FLMD1
7
JP0_0
DCUTDI / LPDI
8
‘Dbg_Voltage’
-
9
JP0_3
DCUTMS
10
-
-
11
JP0_5
DCURDY /
LPDCLKOUT
12
GND
-
13
RESET
-
14
GND
-
* In case the FLMD1 signal must be controlled by the debug/programming tool,
the pin header CN22 must be closed.
The ‘Dbg_Voltage’ (on CN19 pin 8) is monitored or supplied by the debug and
flash programming tools. Therefore, it is necessary to select either Voltage1 (5V)
or the Voltage2 (3.3V) by pin header CN21:
CN21 pin
Selection for Dbg_Voltage
1-2
5V is selected
2-3
3.3V is selected
