Healthsense 100030, 100033 User Manual

1250 Northland Drive
Mendota Heights, MN 55120 Suite 110
FRN: 0017129677
Grantee Code: VUR

Modular Sensor Radio

Design in Specification Manual - Preliminary

The purpose of this document is to provide all the information that a hardware
engineer might need to design a PCB that incorporates the Modular Sensor
Radio (MSR) product. The document includes both mechanical and electrical
specifications.

FCC Statements:

Caution Statement:

The users manual or instruction manual for an intentional or unintentional
radiator shall caution the user that changes or modifications not expressly
approved by the party responsible for compliance could void the user’s authority
to operate the equipment.

Compliance Statement:

Healthsense, Inc.

1250 Northland Drive

Mendota Heights, MN 55120

Phone:[phone] / FAX: [phone]

EUT: Modular Sensor Radio

FCC ID: VUR100030

This device complies with Part 15 of the FCC rules. Operation is subject to the
following two conditions: 1) This device may not cause harmful interference, and,

2) This device must accept any interference received including interference that
may cause undesired operation.

Class B Product Compliance Statement:

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:

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1250 Northland Drive
Mendota Heights, MN 55120 Suite 110
FRN: 0017129677
Grantee Code: VUR

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Castellation Connection Descriptions

Power Group

Ground

Pins 1, 11, 22, 46
Signal Name: GND

Battery Input

Pin 2
Signal Name: VBAT

This pin provides the power source for the MSR. The pin is usually
connected directly to a 3.0 volt lithium cell, but many other power
sources are possible. The battery should have a supercap or
Apogee power controller across the terminals to mitigate the effects
of current spikes on the supply.

V max 3.6V
V nom 3.0V
V min URB dependent
I max 500mA

The maximum current is URB dependent. The number given will
accommodate all future designs.

Switched Vcc Out

Pin 56
Signal Name: SWVCC

This pin provides power back to the motherboard. The purpose of
the pin is to allow the designer to make sure that the logic on the
motherboard is compatible with the MSR. This will eliminate voltage
mismatches and the possibility of excessive current flows through
input protection diodes. In some of the MSRs, this voltage is

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1250 Northland Drive
Mendota Heights, MN 55120 Suite 110
FRN: 0017129677
Grantee Code: VUR

boosted to 3.3V from the battery voltage, while on other designs it
is simply the battery voltage.
This voltage is not available when the MSR processor goes to
sleep. A motherboard design that requires a constant power source
must provide that source externally to the MSR. The design must
also verify that the logic levels between the host and the MSR are
compatible under all circumstances.

Vout Vbat or 3.3V, whichever is greater
I max 100mA

Wake

Pin: 3
Signal Name: WAKE

The wake pin is active high and is used to control a low true shut
down pin on any host logic or power. The wake pin is used to
control the Vout power source in several of the MSR designs. The
host design will most likely use either Wake or Switched Vcc, but
not both. It will always go inactive prior to the removal of Vout
however Wake will go active before Vout has stabilized. The timing
for this is MSR specific, and the designer must allow for the
possibility that the wake to Vout timing may be several
milliseconds..

The pin will drive high, but not drive low. The host must provide a
pull down that is sufficient to keep the host logic inactive during a
power down.

Vout High Vbat or 3.3V, whichever is higher
Vout Low 0V
Iout High 100uA
Iout Low 0uA

Battery Test

Pin: 16
Signal name: BT

This pin is connected to the A/D converter on the MSR. It is able to
measure voltages in the range of 0 to 1.5V. The micro on the MSR
will periodically measure the voltage and report the results back to
a host. The purpose of an external measurement is to allow for
cases where the Vbat voltage is not the actual battery voltage.

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1250 Northland Drive
Mendota Heights, MN 55120 Suite 110
FRN: 0017129677
Grantee Code: VUR

Vin High 1.5V
Vin Low 0V
Rin > 100K

Battery Test Enable

Pin: 15
Signal Name: BTE

This pin is used to enable any external battery test logic. The
purpose of the pin is to reduce current drain that might occur in the
resistor divider networks that may be required to bring the battery
voltage into the range acceptable to the A/D converter. This pin is
active high and will go active 100uS prior to taking a battery reading
on the BT signal input.

Vout High SWVCC
Vout Low 0V
Iout High 100uA
Iout Low 0uA

Indicator Group

LED

Pin: 13
Signal Name: LED

This pin is a high drive for an LED. The drive voltage will vary with
the fall of Vbat, but the software will compensate with longer on
times.

Vout High Vbat
Vout Low 0V
Iout High 5mA
Iout Low 10uA

Buzzer

Pin: 14
Signal Name: BUZZ

This pin is a high drive for a buzzer or mini speaker. The drive
voltage will vary with the fall of Vbat, but the software will
compensate with longer on times. The buzzer voltage is modulated
at 1500Hz to produce a tone. Later version may be configurable as
to the tone frequency.

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