CHAPTER 3 NOTES ON TARGET SYSTEM DESIGN
User’s Manual U16647EJ1V0UM
31
Figure 3-11. 2.54 mm Pitch Connector Pin Configuration
1
2
19
20
(Top view)
20-pin general-purpose connector
Target device
Top view
Table 3-3. 2.54 mm Pitch Connector Pin Functions
Pin No.
Signal Name
I/O
Description
1
GND
−
Connect to GND
2
DCK
IN
Clock input
3
GND
−
Connect to GND
4
DMS
IN
Transfer mode selection input
5
GND
−
GND
6
DDI
IN
Data input
7
GND
−
Connect to GND
8
DRST
IN
Reset input to on-chip debug unit
9
GND
−
Connect to GND
10
RESERVE
−
Open
11
GND
−
Connect to GND
12
RESET
IN
System reset input (leave open when not used)
Note 1
13
GND
−
Connect to GND
14
FLMD0
IN
Flash mode input (leave open when not used)
Note 2
15
GND
−
Connect to GND
16
RESERVE
−
Open
17
GND
−
Connect to GND
18
DDO
OUT
Data output
19
GND
−
Connect to GND
20
V
DD
−
Connect to V
DD
for on-chip debugging (for target system power ON
monitoring)
Notes 1.
This may be required if DRST of the target device is an alternate-function pin and the initial value
of the OCMD0 bit changes according to the reset source. (Refer to section
3.2.8 RESET
.)
2.
This is required when the target device incorporates flash memory.
