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CHAPTER 24 EXAMPLES OF MB90F481B/MB90F482B/MB90F488B/MB90F489B SERIAL PROGRAMMING
24.3 Example of Minimum Connection with Flash Microcontroller
Programmer (When Using the User Power Supply)
If, in serial programming mode, pins (MD2, MD0, and P80) are set as shown below,
MD2, MD0, and P80 do not need to be connected with the flash microcontroller
programmer.
■
Example of Minimum Connection with Flash Microcontroller Programmer
(When Using the User Power Supply)
Figure 24.3-1 shows an example of minimum connection with the flash microcontroller
programmer.
Figure 24.3-1 Example of minimum connection with flash microcontroller programmer of
MB90F481B/MB90F482B/MB90F488B/MB90F489B (when using the user power supply)
AF220/AF210/AF120/AF110
512
User system
Flash Microcontroller
Programmer
Serial write 1
4.7 kΩ
Connector
DX10-28S
/TRES
(5)
TTXD
(13)
TRXD
(27)
TCK
(6)
TVcc
(2)
(7, 8,
14, 15,
GND
21, 22,
1, 28)
Pins 3, 4, 9, 10, 11, 12, 16, 17, 18,
19, 20, 23, 24, 25, and 26 are open.
DX10-28S: write angle type
MB90F481B,
MB90F482B,
MB90F488B,
MB90F489B
4.7 kΩ
Serial write 1
MD2
4.7 kΩ
4.7 kΩ
MD1
4.7 kΩ
4.7 kΩ
MD0
Serial write 0
4.7 kΩ
X0
4.5 MHz to
25 MHz
X1
P80
Serial write 0
4.7 kΩ
User circuit
P81
Serial write 1
User circuit
4.7 kΩ
RST
SIN0
SOT0
SCK0
Vcc
Power
supplied
from user
Vss
Pin 14
Pin 28
Pin assignments of connector(Hirose Electric)
Pin 1
DX10-28S
Pin 15
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