MAXQ3120 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAXQ3120 Datasheet PDF : 33 Pages
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High-Precision ADC
Mixed-Signal Microcontroller
Pin Description (continued)
PIN
64–71
76–80, 1,
2, 3
28–34, 39
NAME
FUNCTION
General-Purpose, Digital, I/O, Type-D Port; External Edge-Selectable Interrupt. These port pins
function as bidirectional I/O pins only. All port pins default to input mode with weak pullups enabled
after a reset. Port pins P0.3, P0.4, and P0.5 can be configured as external interrupt inputs. All alternate
functions must be enabled from software.
P0.0–P0.7/
PIN
SQW, RXD0,
64
TXD0,
65
INT0–INT2/
66
T2A, T2B/
T0G, T0, T1
67
68
PORT
P0.0
P0.1
P0.2
P0.3
P0.4
ALTERNATE FUNCTIONS
RTC Square-Wave Output
—
Serial Port 0 Receive
—
Serial Port 0 Transmit
—
Timer 0 Gate Input
INT0
Timer 0 Input
INT1
69
P0.5
Timer 1 Input/Output
INT2
70
P0.6
Timer 2 Input/Output A (T2P)
—
71
P0.7
Timer 2 Input/Output B (T2PB)
—
General-Purpose, 8-Bit, Digital, I/O, Type-C Port; LCD Segment-Driver Output. These port pins
function as both bidirectional I/O pins and LCD segment-drive outputs. All port pins default to input mode
with weak pullups enabled after a reset. Setting the LCD enable (PCFx) bit for a group of four port pins
enables the LCD function and disables the general-purpose I/O function on all pins in that group.
PIN
76
P1.0–P1.7/
SEG19–
77
SEG12
78
79
PORT
P1.0
P1.1
P1.2
P1.3
LCD SEGMENT
SEG19
SEG18
SEG17
SEG16
LCD ENABLE
PCF1
80
P1.4
SEG15
1
P1.5
SEG14
PCF0
2
P1.6
SEG13
3
P1.7
SEG12
General-Purpose, 8-Bit, Digital, I/O, Type-C Port; LCD Segment-Driver Output. These port pins
function as both bidirectional I/O pins and LCD segment-drive outputs. All port pins default to input mode
with weak pullups enabled after a reset. Setting the LCD enable (PCFx) bit for a group of four port pins
enables the LCD function and disables the general-purpose I/O function on all pins in that group.
PIN
PORT
LCD SEGMENT
LCD ENABLE
P2.0–P2.7/
28
SEG20–
29
SEG27
30
P2.0
P2.1
P2.2
SEG20
SEG21
SEG22
PCF2
31
P2.3
SEG23
32
P2.4
SEG24
33
P2.5
SEG25
PCF3
34
P2.6
SEG26
39
P2.7
SEG27
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