External Connectors Description - OLIMEX ADuC-MT7020 User Manual

Reset button with name RST, connected to ADuC7020 pin 19 (RST).
User button with name SD, connected to ADuC7020 pin 10 (P0.0).
User button with name B1, connected to ADuC7020 pin 20 (P0.4).
User button with name B2, connected to ADuC7020 pin 21 (P0.5).
LCD 16x2 display with BACKLIGHT, connected as follows: RS – to ADuC7020 pin
34 (P4.2); R/W – to ADuC7020 pin 23 (P0.7); E – to ADuC7020 pin 22 (P2.0), DB4 –
to ADuC7020 pin 29 (P1.4), DB5 – to ADuC7020 pin 28 (P1.5), DB6 – to ADuC7020
pin 27 (P1.6), DB7 to ADuC7020 pin 26 (P1.7).
Potentiometer with name Contrast for setting LCD contrast voltage.

EXTERNAL CONNECTORS DESCRIPTION

JTAG
Pin #
1
3
5
7
9
11
13
15
17
19
Signal Name Pin #
+3.3 V 2
P0.3/TRST 4
TDI 6
TMS 8
TCK 10
TCK 12
TDO 14
Not Connected 16
Not Connected 18
Not Connected 20
Page 8
Signal Name
+3.3 V
GND
GND
GND
GND
GND
GND
GND
GND
GND