MAXQ2000-QBX Maxim Integrated Products, MAXQ2000-QBX Datasheet - Page 11

• Manufacturer Part Number: MAXQ2000-QBX
• Description: Microcontrollers (MCU) Low-Power LCD MCU
• Manufacturer: Maxim Integrated Products

Specifications of MAXQ2000-QBX

• Processor Series: MAXQ2000
• Core: RISC
• Data Bus Width: 16 bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 2 KB
• Interface Type: 1-Wire, SPI, JTAG, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 50
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 2.75 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-56
• Development Tools By Supplier: MAXQ2000-KIT
• Minimum Operating Temperature: - 40 C

TQFN-EP
49–56
—
—
QFN-EP
58–65
PIN
—
—
1, 2, 12,
61, 72–
75, 77–
13, 24,
25, 26,
35, 37,
44–49,
57, 55,
80, 87,
88, 99,
89–96
LQFP
100
38,
—
NAME
SEG0–
SEG7;
INT0–
P0.0–
P0.7;
INT3
N.C.
EP
____________________________________________________________________
Low-Power LCD Microcontroller
General-Purpose, Digital, I/O, Type-D Port; LCD Segment-Driver Output; External
Edge-Selectable Interrupt. This port functions as both bidirectional I/O pins and LCD
segment-drive outputs. All port pins are defaulted as input with weak pullup after a
reset. The port pads can be configured as an external interrupt for pins 7 to 4. If the
external interrupt is enabled, the LCD function on the associated pin is disabled.
Setting the PCF0 bit enables the LCD for all pins on this port and disables the general-
purpose I/O function on all pins.
It is possible to mix the LCD and interrupt functions on the same port. To do this,
the interrupt enable must be established prior to setting the PCF0 bit. Care must be
taken not to enable the external interrupt while the LCD is in normal operational
mode, as this could result in potentially harmful contention between the LCD
controller output and the external source connected to the interrupt input.
No Connection. These pins should not be connected.
Exposed Paddle. Exposed paddle is on the under side of the package. It should be left
unconnected.
56-PIN
49
50
51
52
53
54
55
56
68-PIN
58
59
60
61
62
63
64
65
100-PIN
89
90
91
92
93
94
95
96
PORT
Pin Description (continued)
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
FUNCTION
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
ALTERNATE FUNCTIONS
INT0
INT1
INT2
INT3
—
—
—
—
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