User`s guide

Using the AT85DVK-07 Board
AT85DVK-07 Development Board User Guide 2-19
4391B–MP3–07/07
2.12.1 Keypad Extension Table 2-19. Keypad Extension Connector (J10)
Table 2-20. Keypad Extension Connector (J30)
Notes: 1. Depends on matrix configuration.
2. P1.6 is also used as external headphone amplifier enable signal and so may only be
available when not used for such purpose.
3. P1.7 is also used as LCD backlight control signal and so may only be available when
not used for such purpose.
2.13 On-Chip Debug
Unit
The On-Chip Debug (OCD) unit consists in a 10-pin or 6-pin connector J26 allowing
connection of the OCD dongle V1 or V2 through a flat cable. This dongle is part of the
development kit and allows debugging of the firmware using Keil’s Integrated Develop-
ment Environment.
Table 2-21. 10-pin OCD Connector (J26)
Note: 1. Mandatory signals to implement on user’s development board. Signal to connect to
the OCD dongle for debugging.
Table 2-22. 6-pin OCD Connector (J26)
Pin Number Pin Name Pin Description
1 VDD IOVDD power supply 1.8V or 3V depending on the power configuration
2 P1.4 General purpose I/O used for matrix row
3 P1.3/KIN3 General purpose I/O used for matrix row or matrix column 3 input
(1)
4 P1.2/KIN2 General purpose I/O used for matrix row or matrix column 2 input
(1)
5 P1.5 General purpose I/O used for matrix row
Pin Number Pin Name Pin Description
1 P1.0/KIN0 Matrix column 0 input
2 P1.1/KIN1 Matrix column 1 input
3 P1.6
(2)
General purpose I/O
4 P1.7
(3)
General purpose I/O
5 VSS 0V digital supply reference
Pin
Number
Pin
Name Pin Description
Pin
Number
Pin
Name Pin Description
1 NC 2 NC
3 VSS 0V digital supply reference 4
(1)
OCDT OCD Transmit signal
5
(1)
RST MCU Reset signal 6
(1)
OCDR OCD Receive signal
7 VSS 0V digital supply reference 8
(1)
VSS 0V digital supply reference
9 VSS 0V digital supply reference 10
(1)
RST MCU Reset signal
Pin
Number
Pin
Name Pin Description
Pin
Number
Pin
Name Pin Description
1 NC 2 NC
3 VSS 0V digital supply reference 4 OCDT OCD Transmit signal
5 RST MCU Reset signal 6 OCDR OCD Receive signal