SP691ANEB SIPEX [Sipex Corporation], SP691ANEB Datasheet - Page 2

• Manufacturer Part Number: SP691ANEB
• Description: Evaluation Board Manual
• Manufacturer: SIPEX [Sipex Corporation]

BOARD LAYOUT
The SP691A/693A Evaluation Board has been
designed to easily and conveniently provide
access to all pins of the SP691A/693A device
under test. Position the board with the silkscreen
lettering upright (also see drawing on the front
page of this manual) and you will see two
vertical rows of eight pins each, which represent
the 16 pins of the SP691A/693A device starting
in the top left with V
receptacles are raised female pins which can
accommodate easy-hook connection leads for
power and meter connections, as well as scope
probe hooks and grounds for waveform
measurements.
The 16 pin SP691A/693A may be installed in
one of 3 locations: U1 for DIP or DIP sockets,
U3 for SOICs or U2 for SOIC sockets. The five
input pins for the SP691A/693A are provided
with extra Input Probe Points for connecting
inputs to these pins. For example pin 11 WDI
has nearby pins V
evaluation of WDI timeout. These female
receptacle pins can be jumpered together with
easy-hook connectors or stripped back solid wire
leads. In the case of inputs OSC IN, OSC SEL
or PFI, a resistor or capacitor with leads may be
pushed into the female receptacle pins to make
easy connections. Also, mating male pins (see
List of Materials) may be soldered to the
components and inserted into the receptacle pins.
USING THE EVALUATION BOARD
Connect the SP691A/693A Evaluation Board
to the power supplies for V
(see the section Power Supply Connections
following the table SP691A/693A Pin
Assignments). It is good practice to not switch
power on until power connections are made to
the evaluation board.
SP691AEB/03
OUT
and GND to connect to for
BATT
as pin one. The pin
CC
and V
SP691A/693A Evaluation Board Manual
BATT
2
Evaluating Pin Functions
Pin 1 – V
Connect to external supply, battery or capacitor
and charging circuit. If this pin is not used,
connect to GND.
Pin 2 – V
function is used to provide power supply
switching of either V
external device like a CMOS RAM to ensure a
constant supply for the memory. To evaluate this
function, vary the V
voltage until you simulate the following
conditions: V
greater than V
threshold. When V
is below the reset threshold, V
V
4.0V and vary V
observe V
capacitor (C1) is connected from V
Connect V
Pin 3 – V
A 0.1(F bypass capacitor (C2) is connected
from V
Pin 4 – GND – Ground reference for all signals.
Pin 5 – BATT ON – Battery On Output. Goes
high when V
low when V
the base of a PNP through a current-limiting
resistor to BATT ON for V
requirements greater than 250mA.
Pin 6 - LOWLINE - LOWLINE Output goes
low when V
It returns high as soon as V
reset threshold. The output can be used to
generate a NMI (non-maskable interrupt) if the
unregulated supply is inaccessible.
BATT
. Start with V
CC
CC
to GND.
OUT
OUT
– Input Supply Voltage - +5V input.
OUT
BATT
CC
OUT
to V
OUT
– Output Supply Voltage. This
BATT
OUT
falls below the reset threshold.
.
CC
connects to V
CC
– Backup-Battery Input.
switches to V
CC
BATT
(Note: a 0.1 F bypass
switches to V
and V
if no backup battery is used.
from 0V to 5V to 0V and
CC
falls below V
© Copyright 2000 Sipex Corporation
voltage for a set V
voltage of about 2.8 to
CC
CC
is above the reset
CC
or V
OUT
rises above the
CC
CC
OUT
OUT
when V
BATT
BATT
connects to
BATT
. Connect
to GND).
current
and V
. Goes
to an
CC
BATT
CC
is