MAXQ2000 Maxim, MAXQ2000 Datasheet - Page 8

• Manufacturer Part Number: MAXQ2000
• Description: The MAXQ2000 microcontroller is a low-power, 16-bit device that incorporates a liquid-crystal display (LCD) interface that can drive up to 100 (-RBX/-RBX+) or 132 (-RAX/-RAX+/-RFX/-RFX+) segments
• Manufacturer: Maxim

Low-Power LCD Microcontroller
8
TQFN-EP QFN-EP
9–12
1–8
29
30
_____________________________________________________________________
68; 1–5
66, 67,
6–13
PIN
34
35
11, 14–
97, 98,
LQFP
9, 10,
3–8
52
53
18
32KOUT
SEG16–
NAME
SEG8–
SEG15
SEG23
32KIN
P1.0–
P2.0–
P1.7;
P2.7;
32kHz Crystal Input. Connect an external, 32kHz watch crystal between 32KIN and
32KOUT as the low-frequency system clock. Alternatively, 32KIN is the input for an
external, 32kHz clock source when 32KOUT is floating.
32kHz Crystal Output/Input. Connect an external, 32kHz watch crystal between
32KIN and 32KOUT as the low-frequency system clock. Alternatively, float 32KOUT
when an external, 32kHz clock source is connected to the 32KIN pin.
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 are defaulted as input with weak pullup after a reset. Enabling
a pin’s LCD function disables the general-purpose I/O on the pin. Setting the PCF1
bit enables the LCD for all pins on this port and disables the general-purpose I/O
function on all pins.
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 are defaulted as input with weak pullup after a reset. Enabling
a pin’s LCD function disables the general-purpose I/O on the pin. Setting the PCF2
bit enables the LCD for all pins on this port and disables the general-purpose I/O
function on all pins.
56-PIN
56-PIN
10
11
12
—
—
—
—
1
2
3
4
5
6
7
8
9
68-PIN
68-PIN
66
67
68
10
11
12
13
1
2
3
4
5
6
7
8
9
100-PIN
100-PIN
97
98
10
11
14
15
16
17
18
3
4
5
6
7
8
9
PORT
PORT
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
Pin Description (continued)
FUNCTION
56-PIN
SEG16
SEG17
SEG18
SEG19
ALTERNATE FUNCTIONS
ALTERNATE FUNCTION
—
—
—
—
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG8
SEG9
68-PIN
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23