Example Of Minimum Connection To The Flash Microcontroller Programmer (User Power Supply Used); (User Power Supply Used) - Fujitsu MB90420/5 (A) Series Hardware Manual

26.4 Example of Minimum Connection to the Flash Microcontroller Programmer

(User Power Supply Used)

Figure 26.3 is an example of the minimum connection to the flash microcontroller programmer when the
user power supply is used for the supply voltage of microcontroller.
n Example of minimum connection to the flash microcontroller programmer (user power supply
used)
When each pin is set as shown below at programming to flash memory, there is no need for connections
between MD2, MD1, MD0, P00 and the flash microcontroller programmer.
AF220/AF210/AF110
flash microcontroller
programmer
Pins 3, 4, 9, 10, 11, 12, 16, 17, 18, 19,
20, 23, 24, 25 and 26 are open
DX10-28S: Right-angle type
Fig. 26.3 Example of Minimum Connection to the Flash Microcontroller Programmer
EXAMPLES OF MB90F428/A SERIAL WRITE CONNECTION
User system
1 for serial rewrite
1 for serial rewrite
0 for serial rewrite
10 kΩ
0 for serial rewrite
1 for serial rewrite
Connector
DX10-28S or
DX20-28S
(5)
/TRES
TTXD (13)
TRXD
(27)
TCK (6)
TV
(2)
CC
(7, 8,
GN 14, 15,
21, 22,
1, 28)
(User Power Supply Used)
10 kΩ
MD2
10 kΩ
10 kΩ
MD1
10 kΩ
10 kΩ
MD0
10 kΩ
X0
1 MHz to 16 MHz
X1
P00
User circuit
10 kΩ
P01
User circuit
C
0.1 µF
10 kΩ
RST
SIN1
SOT1
SCK1
Vcc
User power supply
Vss
Pin 14
DX10-28S
Pin 28
Connector (Hirose Electric Co., Ltd.) pin assignment
26-9
MB90F428/A
Pin 1
Pin 15