Datasheet

2
Atmel AT30TSE002B [DATASHEET]
8711G–SEEPR–5/12
Figure 1. Pin Configuration
1. Description
Atmel
®
AT30TSE002B is a combination Serial EEPROM and temperature sensor device containing 2048-bits of Serially
Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 256-bytes of eight bits each and
could be used to store memory module and vendor information. The EEPROM operation is tailored specifically for DRAM
Memory Modules Serial Presence Detect (SPD). The first 128-bytes of the memory incorporate a permanent and a
reversible software Write Protection (WP) feature. Once the permanent software WP is enabled, by sending a special
command, it cannot be reversed. However, once the reversible software WP is enabled, it can be reversed by sending a
special command.
The integrated temperature sensor converts temperatures from -20°C to +125°C to a digital word and provides an
accuracy of ±1°C (max.) in the temperature range +75°C to +95°C. The temperature sensor continuously monitors
temperature and updates data in the temperature register at least eight times per second. Temperature data is latched
internally by the device and may be read by software via a microcontroller at anytime. The AT30TSE002B has flexible
user programmable internal registers to configure the temperature sensor performance and response to over
temperature conditions. The device contains programmable high, low, and critical temperature limits. The device
EVENT
pin is configured as active low and can be configured to operate as an interrupt or as a comparator output. Manufacturer
and Device ID registers provide the ability to confirm the identity of the device. The AT30TSE002B supports the industry
standard 2-wire I
2
C/ SMBus serial interface to include time out feature to help prevent system lock-ups.
2. Absolute Maximum Ratings*
Pin Function
A
0
, A
1
, A
2
Address Inputs
SDA Serial Data
SCL Serial Clock Input
Temperature Alert EVENT
GND Ground
V
CC
Power Supply
V
CC
EVENT
SCL
SDA
A
0
A
1
A
2
GND
4
3
2
1
5
6
7
8
8-WDFN
Bottom view
Operating Temperature . . . . . . . . . . - 40°C to +125°C
Storage Temperature . . . . . . . . . . . - 65°C to + 150°C
Voltage on any pin
with respect to ground . . . . . . . . . . . . . . .- 1.0 V +5.0V
Pin A
0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . - 1.0 V +12V
Maximum Operating Voltage . . . . . . . . . . . . . . . . 4.3V
DC Output Current. . . . . . . . . . . . . . . . . . . . . . . 5.0mA
*Notice: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions beyond those indicated in
the operational sections of this specification are
not implied. Exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.