maxq2010-rfx Maxim Integrated Products, Inc., maxq2010-rfx Datasheet - Page 29

• Manufacturer Part Number: maxq2010-rfx
• Description: 16-bit Mixed-signal Microcontroller With Lcd
• Manufacturer: Maxim Integrated Products, Inc.

A simple LCD-segmented glass interface example
demonstrates the minimal hardware required to inter-
face to a MAXQ2010 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. See Figure 8.
Embedded debugging capability is available through
the JTAG-compatible TAP. Embedded debug hardware
Figure 8. Two-Character, 1/2 Duty, LCD Interface Example
Figure 9. In-Circuit Debugger
16-Bit Mixed-Signal Microcontroller with LCD
______________________________________________________________________________________
MAXQ2010
SEG[0:7]
COM0
COM1
TMS
TDO
TCK
TDI
In-Circuit Debug
CONTROLLER
MAXQ2010
TAP
SEG3
SEG0
SEG1
SEG2
CONNECTED TO DARK GREY SEGMENTS
CONNECTED TO LIGHT GREY SEGMENTS
(UTILITY ROM)
ROUTINES
BREAKPOINT
SERVICE
ENGINE
DEBUG
DEBUG
and embedded ROM firmware provide in-circuit debug-
ging capability to the user application, eliminating the
need for an expensive in-circuit emulator. Figure 9
shows a block diagram of the in-circuit debugger. The
in-circuit debug features include the following:
• A hardware debug engine.
• A set of registers able to set breakpoints on register,
• A set of debug service routines stored in the utility
The embedded hardware debug engine is an indepen-
dent hardware block in the microcontroller. The debug
CONTROL
ADDRESS
code, or data accesses.
ROM.
DATA
CPU
SEG7
SEG4
SEG5
SEG6
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