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4.1.1
Pin assignment
This section describes the interface signals used between MINICUBE2 and the target system. Table 4-1 lists
the pin assignment when a 16-pin target cable is used. Table 4-2 describes the functions of each pin. The pin
assignment varies depending on whether the operation is debugging or programming, so design the circuit
appropriately according to the circuit connection examples described on the following sections.
Pin No.
For Debugging
(with 78K0-OCD
Board Connected)
1
GND
2
RESET_OUT
<R>
3
RxD
4
V
DD
<R>
5
TxD
6
R.F.U.
7
R.F.U.
8
R.F.U.
9
CLK
10
R.F.U.
<R>
11
R.F.U.
12
R.F.U.
13
DATA
14
FLMD0
<R>
15
RESET_IN
16
R.F.U.
Note
Signal names in MINICUBE2
Pin Name
RESET_IN
RESET_OUT
CLK
DATA
FLMD0
FLMD1
RxD
TxD
R.F.U.
<R>
N.C
Notes 1. As seen from MINICUBE2.
2. Not used in some devices.
54
CHAPTER
4
HOW TO USE MINICUBE2 WITH 78K0 MICROCONTROLLER
Table 4-1. Pin Assignment When Using 16-Pin Target Cable
Note
Pin Name
For Programming
RxD
TxD
N.C
FLMD1
R.F.U.
Don't care
Table 4-2. Pin Functions
Note 1
IN/OUT
IN
Pin used to input reset signal from the target system
OUT
Pin used to output reset signal to the target device
OUT
Pin used to output clock signal to the target device
IN/OUT
Pin used to input/output for data communication during debugging
OUT
Pin used to set the target device to debug mode or programming mode
OUT
Pin used to set programming mode
IN
Pin used to receive command/data from the target device
OUT
Pin used to transmit command/data to the target device
–
This pin is not used, so leave it open.
–
This pin is not used, so leave it open.
User's Manual
TOP VIEW
TOP VIEW
Pin 1
Pin 1
Target system
Target system
15
15
13
13
11
11
9
9
7
7
5
5
16
16
14
14
12
12
10
10
8
8
6
6
Pin assignment of target connector
Pin assignment of target connector
to be mounted on target system
to be mounted on target system
Description
Note 2
U18371EJ5V0UM
78K0-OCD board is not
78K0-OCD board is not
required for programming.
required for programming.
3
3
1
1
4
4
2
2
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