69 / 84
new products
ROHM Introduces 16bit ‘Tough’ MCUs
Optimized for Rechargeable NiMH
Applications
Class-leading low voltage drive contributes to greater
energy efficiency and performance in compact battery-
driven industrial equipment
LAPIS Semiconductor, a member of the ROHM group,
has announced the development of the ML620130
family of 16bit low power MCUs, optimized for compact
industrial equipment requiring battery drive in noisy
environments, featuring superior processing capability
with low power consumption.
In addition to clearing the ±30kV noise measurement
limit, operating voltage has been successfully reduced
to 1.6V. Optimizing the operating voltage to an integral
multiple of standard nickel metal hydride batteries
(NiMH, 0.8V× 2=1.6V) ensures efficient use without
wasting battery charge. This contributes to decreased
battery consumption, prolonging battery life in
portables and battery-equipped industrial equipment.
The ML620130 family consists of 9 models offered in
a variety of memory capacities, pin counts, and other
characteristics that make it possible for users to select
the ideal solution to fit set needs.
In recent years, the continued miniaturization of sensors,
batteries, and power supplies has increased the demand
for compact, low-cost modules (embedded substrates)
that support a variety of applications and operating
conditions. When considering different situations
and usage methods there is a need to ensure stable
operation under harsh environments (i.e. excessive
noise, heat generation) while at the same time requiring
improved performance such as greater communication
diversification and generalization.
To provide increased miniaturization and lower costs,
many applications are opting to eliminate noise and/
or thermal countermeasures. However, this makes it
difficult to balance the conflicting demands for increased
environmental resistance while maintaining safety
utilizing fewer external parts. In addition, reducing
the size of the battery mounted in the module while
also increasing battery life requires that the power
consumption (voltage and current) be optimized for
each application.
To meet these disparate needs, LAPIS Semiconductor
has expanded its lineup of market-proven 16bit low
power microcontrollers to include the ML620130 family
of ‘tough‘ MCUs that incorporate multiple functions
optimized for battery drive operation.
Key Features
Optimized for ultra-low-voltage rechargeable nickel
metal hydride batteries
The minimum operating voltage has been decreased,
from the conventional 1.8V to 1.6V. This extends the
supply voltage detection range down to 1.63V (typ.)
– very close to the voltage of 2 nickel metal hydride
batteries (0.8V×2=1.6V) – reducing the number of
charge cycles and memory effects while prolonging
battery life.[1]
Improves basic performance and reduces current
consumption
16MHz CPU and 32MHz (PWM) peripheral clock
operations increase performance by 2-fold over ROHM
standard lineup of ‘tough’ MCUs, while operating current
is reduced by more than 25%*.*Compared to typical
published values
Class-leading high-accuracy on-chip oscillator
eliminates the need for an external oscillator
A high-accuracy on-chip RC-type oscillator is built in
(±1%@-20°C to ±85°C, ±1.5%@-40°C to +105°C).
UART communication (asynchronous method), which
has been widely adopted for a variety of uses as an
interface for external equipment, is enabled throughout
the entire temperature range without an external
oscillator, reducing peripheral component costs. In
addition, both full-duplex (×1ch) and half-duplex (×2ch)
modes are allowed, and in the event that bidirectional
communication is not required at the same time the 2
receiving terminals and 2 transmission terminals can be
flexibly assigned, making it possible to mount on smaller
boards.
Superior noise immunity
High noise immunity inherited from LAPIS
Semiconductor’s conventional lineup of low-power
MCUs makes it possible to clear the ±30kV Level
New-Tech Magazine Europe l 69