Datasheet

16 Maxim Integrated
16-Bit Microcontrollers with
Infrared Module and Optional USB
MAXQ612/MAXQ622
Pin Descriptions—TQFN, LQFP (continued)
PIN
NAME FUNCTION
MAXQ612
TQFN-EP
MAXQ612
LQFP
MAXQ622
LQFP
8–11, 29–32
11–14,
41–44
11–14,
41–44
P2.0–P2.7;
MOSI0,
MISO0,
SCLK0,
SSEL0,
TCK, TDI,
TMS, TDO
General-Purpose, Digital, I/O, Type C Port. These port pins function as
bidirectional I/O pins. P2.0 to P2.3 default to three-state mode after a
reset. All alternate functions must be enabled from software. Enabling
the pin’s special function disables the general-purpose I/O on the pin.
The JTAG pins (P2.4 to P2.7) default to their JTAG function with weak
pullups enabled after a reset. The JTAG function can be disabled using
the TAP bit in the SC register.
P2.7 functions as the JTAG test-data output on reset and defaults to
an input with a weak pullup. The output function of the test data is only
enabled during the TAP’s shift_IR or shift_DR states.
MAXQ612
TQFN-EP
MAXQ612
LQFP
MAXQ622
LQFP
PORT
SPECIAL
FUNCTION
8 11 11 P2.0 MOSI0
9 12 12 P2.1 MISO0
10 13 13 P2.2 SCLK0
11 14 14 P2.3
SSEL0
29 41 41 P2.4 TCK
30 42 42 P2.5 TDI
31 43 43 P2.6 TMS
32 44 44 P2.7 TDO
18–25 27–34 27–34
P3.0–P3.7;
INT8–INT15
General-Purpose, Digital, I/O, Type D Port; External Edge-Selectable
Interrupt. These port pins function as bidirectional I/O pins or as inter-
rupts. All port pins default to three-state mode after a reset. All interrupt
functions must be enabled from software.
MAXQ612
TQFN
MAXQ612
LQFP
MAXQ622
LQFP
PORT
SPECIAL
FUNCTION
18 27 27 P3.0 INT8
19 28 28 P3.1 INT9
20 29 29 P3.2 INT10
21 30 30 P3.3 INT11
22 31 31 P3.4 INT12
23 32 32 P3.5 INT13
24 33 33 P3.6
INT14
25 34 34 P3.7 INT15