Datasheet
4
Atmel AT30TSE002B [DATASHEET]
8711G–SEEPR–5/12
4. Pin Description
AT30TSE002B requires no external components for operation except for pull-up resistors on SCL, SDA, and EVENT
pins. In order to provide effective noise protection and filtering, it is recommended that a decoupling capacitor of 0.1F be
used and is located as close as possible to the device between V
CC
and ground pins.
Serial Clock (SCL): The SCL input is used to positive edge clock data into each EEPROM device and negative edge
clock data out of each device.
Serial Data (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open drain driven and may be
wire-ORed with any number of other open-drain or open collector devices.
Device Addresses (A
2
, A
1
, A
0
): The A
2
, A
1
, and A
0
pins are device address inputs that are hardwired (directly to GND
or to V
CC
) for compatibility with 2-wire devices. When the pins are hardwired, as many as eight devices may be
addressed on a single bus system. A device is selected when a corresponding hardware and software match is true. If
these pins are left floating, the A
2
, A
1
, and A
0
pins will be internally pulled to GND. However, Atmel recommends always
connecting the address pins to a known state by direct connection to ground or V
CC
, but if using a pull-up resistor, Atmel
recommends using 10k or less.
The A
0
pin is also overvoltage tolerant, allowing up to 10V for software write protection functionality. (See Section 6.
through Section 9.)
Temperature Alert Output (
EVENT): The EVENT pin outputs a signal when the temperature goes beyond the
user-programmed temperature limits and be configured in one of three modes; either Interrupt, Comparator, or Critical
Alarm modes.
The
EVENT pin is an open-drain output and requires a pull-up resistor for proper operation (see Section 10.).
Table 4-1. Pin Capacitance
(1)
Note: 1. This parameter is ensured by characterization only.
Applicable over recommended operating range from T
A
= 25°C, f = 100 kHz, V
CC
= +3.0V
Symbol Test Condition Max Units Conditions
C
I/O
Input/output Capacitance (SDA), EVENT 8 pF V
I/O
= 0V
C
IN
Input Capacitance (A
0
, A
1
, A
2
, and SCL) 6 pF V
IN
= 0V