S24163
PIN CONFIGURATION
ENDURANCE AND DATA RETENTION
The S24163 is designed for applications requiring up to
100,000 erase/write cycles and unlimited read cycles. It
provides 100 years of secure data retention, with or without
power applied, after the execution of 100,000 erase/write
cycles.
APPLICATIONS
SMS24163
8-Pin PDIP
or 8-Pin SOIC
NC
RESET#
NC
VSS
1
2
3
4
8
7
6
5
VCC
NC
SCL
SDA
2014 T PCon 2.0
The S24163 is ideal for applications requiring low voltage
and low power consumption. This device provides
microcontroller RESET control and can be manually
resettable. This device also uses a cost effective, space-
saving, 8-pin SOIC or PDIP plastic package. Typical
applications include alarm devices, electronic locks,
meters, keys, pagers and cellular phones.
RESET CONTROLLER DESCRIPTION
The device provides a precise reset output to a
microcontroller and it’s associated circuitry ensuring cor-
rect system operation during power-up/down conditions
and brownout situations. The output is open drain, allow-
ing control of the reset function by multiple devices.
During power-up the reset output remains in a fixed active
state until V
CC
passes through the reset threshold and
remains above the threshold for 200ms. The reset output
is valid whenever V
CC
≥
1V. If V
CC
falls below the
threshold for more than t
GLITCH
the device will immediately
generate a reset and drive the output.
The reset pin is an I/O; therefore, forcing the pin to the
active state can also manually reset the device. Because
the I/O needs to be an open drain, the internal timer can
only be triggered by the leading edge of the input. The
resulting reset output will either be t
PURST
, or the exter-
nally applied reset signal, whichever is longer. This can
provide an affective debounce or reset signal extender
solution.
CHARACTERISTICS OF THE I
2
C BUS
General Description
The I
2
C bus was designed for two-way, two-line serial
communication between different integrated circuits. The
two lines are a serial data line (SDA), and a serial clock line
(SCL). The SDA line must be connected to a positive
supply by a pull-up resistor, located somewhere on the
bus (See Figure 1). Data transfer between devices may
be initiated with a START condition only when SCL and
SDA are HIGH (bus is not busy).
PIN DESCRIPTIONS
SCL — Serial Clock:
The SCL input is used to clock data
into and out of the device. In the WRITE mode data must
remain stable while SCL is HIGH. In the READ mode data
is clocked out on the falling edge of SCL.
SDA — Serial Data:
The SDA pin is a bidirectional pin
used to transfer data into and out of the device. Data may
change only when SCL is LOW, except START and STOP
conditions. It is an open-drain output and may be wire-
ORed with any number of open-drain or open-collector
outputs.
RESET# — Reset:
This is an active low open drain output.
It is driven low whenever V
CC
is below V
TRIP
. It is also an
input and can be used to debounce a switch input or
perform signal conditioning. The pin has an internal pull-up
and should be left unconnected if the signal is not used in
the system. However, an external pull-up resistor must be
connected when the pin is tied to a system RESET# line.
V
CC
— Power:
V
CC
is the voltage input, typically 2.7 to 5.5
volts.
GND — Ground:
Power return.
NC
—
No Connect:
The no connect inputs are not used.
However, to ensure proper operation, they can be uncon-
nected or tied to ground. They must not be tied to V
CC
.
2014 2.1 8/2/00
2
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
