Fujitsu MB88121 SERIES Switch User Manual


 
SK-91F467-FLEXRAY V1.1
Connectors
© Fujitsu Microelectronics Europe GmbH - 41 - FMEMCU-UG-910017-11
4.6 USER-LEDs and optional LC-Display (D1-D16, J6)
There are sixteen user LEDs on-board, D1-D8 connected to MCU port P25 and D9-D16
connected to MCU port P16. To disconnect the LEDs from the MCU, it is possible to remove
RN3 (D1-D8 at port P25) and RN2 (D9-D16 at port P16).
It is also possible to connect a standard LCD module with backlight to connector J6. With the
potentiometer RP1 the contrast of the LCD can be adjusted.
Pin 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15
LCD
DB7 DB6 DB5 DB4 - - - - E R/W RS VO Vcc GND LED- LED+
LED
D8 D7 D6 D5 D4 D3 D2 D1
Port
P25_7 P25_6 P25_5 P25_4 P25_3 P25_2 P25_1 P25_0
MCU
187 186 185 184 181 180 179 178
Table 4-5: LED/LCD Signals
Figure 4-6: User LEDs / LCD
D1
(Port: P25_0)
LCD contrast
D
8
(Port: P25_7)
D1
6
(Port: P16_7)
D
9
(Port: P16_0)