MAXQ615 Maxim Integrated Products, MAXQ615 Datasheet - Page 18

• Manufacturer Part Number: MAXQ615
• Description: 16-Bit MAXQ Microcontroller
• Manufacturer: Maxim Integrated Products

Table 4. Stop Mode Power-Fail Detection States with Power-Fail Monitor Disabled (continued)
The low-power, high-performance RISC architecture of
this device makes it an excellent fit for many portable or
applications requiring security.
Careful PCB layout significantly minimizes system level
digital noise that could interact with the microcontroller or
peripheral components. The use of multilayer boards is
essential to allow the use of dedicated power planes. The
area under any digital components should be a continu-
ous ground plane if possible. Keep any bypass capacitor
leads short for best noise rejection and place the capaci-
tors as close to the leads of the devices as possible.
CMOS design guidelines for any semiconductor require
that no pin be taken above V
of this guideline can result in a hard failure (damage to
the silicon inside the device) or a soft failure (uninten-
tional modification of memory contents). Voltage spikes
above or below the device’s absolute maximum ratings
can potentially cause a catastrophic latchup of the
device.
Microcontrollers commonly experience negative volt-
age spikes through either their power pins or general-
purpose I/O pins. Negative voltage spikes on power pins
are especially problematic as they directly couple to the
internal power buses. Devices such as keypads can con-
duct electrostatic discharges directly into the microcon-
troller and seriously damage the device. System design-
ers must protect components against these transients
that can corrupt system memory.
STATE
D
E
F
POWER-FAIL
(Periodically)
Off
On
Off
Applications Information
���������������������������������������������������������������� Maxim Integrated Products 18
REGULATOR
Grounds and Bypassing
INTERNAL
DD
Off
Off
Off
or below GND. Violation
16-Bit MAXQ Microcontroller with
OSCILLATOR
CRYSTAL
Off
Off
Off
RETENTION
SRAM
www.DataSheet.co.kr
Yes
Yes
Designers must have the following documents to fully use
all the features of this device. This data sheet contains
pin descriptions, feature overviews, and electrical
specifications. Errata sheets contain deviations from
published specifications. The user’s guide offers detailed
information about device features and operation.
• This MAXQ615 data sheet, which contains electrical/
• The revision-specific MAXQ615 errata sheet.
• The MAXQ615 User’s Guide, which contains detailed
A variety of highly versatile, affordably-priced develop-
ment tools for this microcontroller are available from
Maxim and third-party suppliers, including:
• Compilers
• In-circuit emulators
• Integrated development environments (IDEs)
A partial list of development tool vendors can be found at
www.maxim-ic.com/MAXQ�tools.
For technical support, go to:
https://support.maxim-ic.com/micro.
—
Development and Technical Support
timing specifications and pin descriptions.
information on core features and operation, including
programming.
Application enters stop mode.
V
CPU in stop mode.
V
An interrupt occurs that causes the CPU to exit
stop mode.
Power-fail monitor is turned on, detects a power-
fail, puts CPU in reset.
Power-fail monitor is turned on periodically.
V
Device held in reset. No operation allowed.
Hardware Multiplier
DD
POR
DD
> V
< V
Additional Documentation
< V
RST
POR
DD
.
< V
RST
COMMENTS
.
MAXQ615
Datasheet pdf - http://www.DataSheet4U.net/