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CHAPTER 24 EXAMPLES OF MB90F481B/MB90F482B/MB90F488B/MB90F489B SERIAL PROGRAMMING
24.2 Example of Connection in Single-Chip Mode (When Using
the User Power Supply)
In the user system, mode pins MD2 and MD0, which are set to single-chip mode, are
supplied with the inputs MD2=1 and MD0=0 by TAUX3 and TMODE of AF220/AF210/
AF120/AF110, and the system is set to serial programming mode (serial programming
mode: MD2, MD1, MD0=110).
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Example of Connection in Single-Chip Mode (When Using the User Power Supply)
Figure 24.2-1 Example of serial programming connection in single chip mode for MB90F481B/
MB90F482B/MB90F488B/MB90F489B (when using the user power supply)
AF220/AF210/AF120/AF110
Flash Microcontroller
510
User system
Connector
Programmer
DX10-28S
TAUX3
(19)
TMODE
(12)
TAUX
(23)
(10)
/TICS
/TRES
(5)
TTXD
(13)
TRXD
(27)
TCK
(6)
TVcc
(2)
(7, 8,
GND
14, 15,
21, 22,
1, 28)
Pins 3, 4, 9, 11, 16, 17, 18,
20, 24, 25, and 26 are open.
DX10-28S: write angle type
MD2
4.7 kΩ
4.7kΩ
MD1
4.7 kΩ
MD0
X0
4 MHz to
25 MHz
X1
P80
4.7 KΩ
User
4.7 kΩ
4.7 kΩ
RST
4.7 kΩ
P81
User
SIN0
SOT0
SCK0
Vcc
Power
supplied
from user
Vss
Pin 14
DX10-28S
Pin 28
Pin assignments of connector (Hirose Electric)
MB90F481B,
MB90F482B,
MB90F488B,
MB90F489B
Pin 1
Pin 15
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