MAXQ2000-RFX Maxim Integrated Products, MAXQ2000-RFX Datasheet - Page 32

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

Specifications of MAXQ2000-RFX

• 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: LQFP-100
• Development Tools By Supplier: MAXQ2000-KIT
• Minimum Operating Temperature: - 40 C

• Flexibility to use external resistors to adjust drive volt-
A simple LCD-segmented glass interface example
demonstrates the minimal hardware required to inter-
face to a MAXQ2000 microcontroller. A two-character
LCD is controlled, with each character containing
seven segments plus decimal point. The LCD controller
is configured for 1/2 duty cycle operation, meaning the
active segment is controlled using a combination of
segment signals, and COM0 or COM1 signals are used
to select the active display.
The low-power, high-performance RISC architecture of
the MAXQ2000 makes it an excellent fit for many
portable or battery-powered applications that require
cost-effective computing. The high-throughput core is
complemented by a 16-bit hardware multiplier-accumu-
lator, allowing the implementation of sophisticated com-
putational algorithms. Applications benefit from a wide
range of peripheral interfaces, allowing the microcon-
troller to communicate with many external devices. With
integrated LCD support of up to 100 or 132 segments,
applications can support complex user interfaces.
Displays are driven directly with no additional external
hardware required. Contrast can be adjusted using a
built-in, adjustable resistor. The simplified architecture
Low-Power LCD Microcontroller
Figure 5. Two-Character, 1/2 Duty, LCD Interface Example
32
ages and current capacity
____________________________________________________________________
MAXQ2000
SEG0:7
COM0
COM1
Applications
SEG1
SEG2
SEG3
SEG0
CONNECTED TO DARK GREY SEGMENTS
CONNECTED TO LIGHT GREY SEGMENTS
reduces component count and board space, critical
factors in the design of portable systems.
The MAXQ2000 is ideally suited for applications such
as medical instrumentation, portable blood glucose
equipment, and data collection devices. For blood glu-
cose measurement, the microcontroller integrates an
SPI interface that directly connects with analog front
ends for measuring test strips.
Designers must have four documents to fully use all the
features of this device. This data sheet contains pin
descriptions, feature overviews, and electrical specifi-
cations. Errata sheets contain deviations from pub-
lished specifications. The user’s guides offer detailed
information about device features and operation. The
following documents can be downloaded from
www.maxim-ic.com/microcontrollers.
• The MAXQ2000 errata sheet, available at
• The MAXQ Family User’s Guide , which contains
• The MAXQ Family User’s Guide: MAXQ2000
www.maxim-ic.com/errata.
detailed information on core features and operation,
including programming.
Supplement , which contains detailed information on
features specific to the MAXQ2000.
Additional Documentation
SEG7
SEG4
SEG5
SEG6