Datasheet

5
AT30TSE004A [DATASHEET]
Atmel-8868C-DTS-AT30TSE004A-Datasheet_122013
2. Pin Descriptions and Pinouts
Table 2-1. Pin Descriptions
Figure 2-1. Pinout
Note: UDFN is the recommended and preferred package. The metal pad on the bottom of the UDFN/WDFN
package is not internally connected to a voltage potential. This pad can be a “no connect” or connected to GND.
Symbol Name and Function
Asserted
State
Type
SCL
Serial Clock: The SCL pin is used to provide a clock to the device and is used
to control the flow of data to and from the device. Command and input data
present on the SDA pin is always latched in on the rising edge of SCL, while
output data on the SDA pin is always clocked out on the falling edge of SCL.
The SCL pin must either be forced high when the serial bus is idle or pulled-high
using an external pull-up resistor.
— Input
SDA
Serial Data: The SDA pin is an open-drain bidirectional input/output pin used to
serially transfer data to and from the device.
The SDA pin must be pulled-high using an external pull-up resistor (not to
exceed 8K in value) and may be wire-ORed with any number of other
open-drain or open-collector pins from other devices on the same bus.
—
Input/
Output
EVENT
EVENT: The EVENT pin is an open-drain output pin used to indicate when the
temperature goes beyond the user-programmed temperature limits. The
EVENT
pin can be operated in one of three different modes; either Interrupt,
Comparator, or Critical Alarm Modes. The ALERT pin must be pulled-high using
an external pull-up resistor for proper operation.
— Output
A
2
, A
1
, A
0
Device Address Inputs: The A
0
, A
1
, and A
2
pins are used to select the device
address and corresponds to the three Least-Significant Bits (LSB) of the I
2
C
FM+ seven bit slave address. These pins can be directly connected to V
CC
or
GND in any combination, allowing up to eight devices on the same bus.
The A
0
pin is also an overvoltage tolerant pin, allowing up to 10V to support the
Reversible Software Write Protection (RSWP) feature (see Section 7.3 “Write
Protection” on page 33).
— Input
V
CC
Device Power Supply: The V
CC
pin is used to supply the source voltage to the
device. Operations at invalid V
CC
voltages may produce spurious results and
should not be attempted.
— Power
GND
Ground: The ground reference for the power supply. GND should be connected
to the system ground.
— Power
UDFN / WDFN
Top View
A
0
A
1
A
2
GND
V
CC
EVENT
SCL
SDA
8
7
6
5
1
2
3
4