Datasheet

6 Maxim Integrated
Evaluates: MAXQ622
MAXQ622 Evaluation Kit
User Input Pushbuttons
The MAXQ622 EV kit provides eight momentary contact
switches intended for user input. Each switch is con-
nected to a separate port pin on the MAXQ622’s port 1
(P1.7 to P1.0) as shown in Table 3. The other side of
each switch is connected to ground. Therefore, by using
the weak pullup capability of the port pins, switch clo-
sure can be detected by reading a low on the normally
high corresponding port pin.
JTAG Interface
A USB-to-JTAG adapter (provided with the EV kit) is
used to program and debug applications running on the
MAXQ622 EV kit. Connect the 10-pin ribbon cable from
the JTAG board’s J2 connector to connector P7 on the
MAXQ622 EV kit board, being careful to note the polarity.
Tools such as the Microcontroller Tool Kit (MTK) and IAR
Embedded Workbench have built-in support for loading
applications through the JTAG interface and using all the
MAXQ622 debug functionality (breakpoints, register and
memory reading, etc.).
Table 3. Switch Input Connections
PORT PIN SWITCH
P1.0 SW1
P1.1 SW2
P1.2 SW3
P1.3 SW4
P1.4 SW5
P1.5 SW6
P1.6 SW7
P1.7 SW8