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PDF AT30TSE004A Data sheet ( Hoja de datos )
| Número de pieza | AT30TSE004A | |
| Descripción | Integrated Temperature Sensor | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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AT30TSE004A
Integrated Temperature Sensor with Serial EEPROM
Features
DATASHEET
Integrated Temperature Sensor (TS) + 4-Kbit Serial EEPROM
JEDEC JC42.4 (TSE2004av) DIMM Serial Presence Detect (SPD) + TS
compliant
Low voltage operation
̶ Optimized for VCC range of 1.7V to 3.6V
2-wire serial interface: I2C Fast Mode Plus (FM+) compatible
̶ 100kHz, 400kHz, and 1MHz compatibility
̶ Bus Timeout supported
Schmitt Trigger, filtered inputs for noise suppression
Industry standard green (Pb/Halide-free/RoHS compliant) package options
̶ 8-pad Ultra Thin DFN (2 x 3 x 0.6mm)
̶ 8-pad Very Very Thin DFN (2 x 3 x 0.8mm)
Temperature Sensor Features
Highly accurate B-grade temp. measurements requiring no external
components
̶ ±1.0°C accuracy (maximum) over the +75°C to +95°C range
̶ ±2.0°C accuracy (maximum) over the +40°C to +125°C range
̶ ±3.0°C accuracy (maximum) over the -20°C to +125°C range
11-bit ADC temperature-to-digital converter with 0.125°C resolution
Programmable hysteresis threshold: off, 0°C, 1.5°C, 3°C, and 6°C
Low operating current
̶ Temperature sensor active ~0.2mA (typical)
Serial EEPROM Features
Integrates 4-Kbits of Serial EEPROM
̶ Internally organized into four quadrants of 128-bytes each
Individual Reversible Software Write Protection on all four 128-byte quadrants
Supports byte and Page Write operations
Self-timed write cycle (5ms maximum)
High-reliability
̶ Endurance: 1,000,000 write cycles
̶ Data retention: 100 years
Low operating current
̶ Serial EEPROM Write ~1.5mA (typical)
̶ Serial EEPROM Read ~0.2mA (typical)
Atmel-8868C-DTS-AT30TSE004A-Datasheet_122013
1 page  
2. Pin Descriptions and Pinouts
Table 2-1.
Symbol
SCL
SDA
EVENT
A2, A1, A0
VCC
GND
Pin Descriptions
Name and Function
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.
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.
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.
Device Address Inputs: The A0, A1, and A2 pins are used to select the device
address and corresponds to the three Least-Significant Bits (LSB) of the I2C
FM+ seven bit slave address. These pins can be directly connected to VCC or
GND in any combination, allowing up to eight devices on the same bus.
The A0 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).
Device Power Supply: The VCC pin is used to supply the source voltage to the
device. Operations at invalid VCC voltages may produce spurious results and
should not be attempted.
Ground: The ground reference for the power supply. GND should be connected
to the system ground.
Asserted
State
—
—
—
—
—
—
Type
Input
Input/
Output
Output
Input
Power
Power
Figure 2-1. Pinout
UDFN / WDFN
A0
A1
A2
GND
1
2
3
4
8 VCC
7 EVENT
6 SCL
5 SDA
Top View
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.
AT30TSE004A [DATASHEET]
Atmel-8868C-DTS-AT30TSE004A-Datasheet_122013
5
5 Page 
5. Device Addressing
The AT30TSE004A is designed to allow the Serial EEPROM and the temperature sensor to operate in parallel
while executing valid command protocol. For example, when the temperature sensor is busy during a
temperature conversion cycle, it is possible to perform any Serial EEPROM operation during this time and vice
versa.
The device requires a 7-bit device address and a Read/Write select bit following a Start condition from the
Master to initiate communication with either the temperature sensor or the Serial EEPROM. The device address
byte is comprised of a 4-bit device type identifier followed by three device address bits (A2, A1,and A0) and a
R/W bit and is clocked by the Master on the SDA pin with the Most Significant Bit first (see Table 5-1).
The AT30TSE004A will respond to three unique device type identifiers. The device type identifier of
‘1010’(Ah) is necessary to select the device for reading or writing. The device type identifier of ‘0110’(6h)
has multiple purposes. First, it is used to access the page address function which determines what the internal
address counter is set to. For more information on accessing the page address function, please refer to Section
7.1.1 “Set Page Address and Read Page Address Commands” on page 27 The device type identifier of
‘0110’(6h) is also used to access the Software Write Protection feature of the device. Information on the
Software Write Protection functionality can be found in Section 7.3 “Write Protection” on page 33.
Table 5-1. AT30TSE004A Device Address Byte
Function
Serial EEPROM
Read/Write
Serial EEPROM Write
Protection and Page
Address Functions
Bit 7
Bit 6
Bit 5
Bit 4
Device Type Identifier
1010
0110
Bit 3
Bit 2
Bit 1
Device Address
A2 A1 A0
Bit 0
Read/Write
R/W
A2 A1 A0
R/W
Temperature Sensor
0
0
1
1 A2 A1 A0
R/W
The software device address bits (A2, A1, and A0) must match their corresponding hard-wired device address
inputs (A2, A1 and A0) allowing up to eight devices on the bus at the same time (see Table 5-2). The eighth bit of
the address byte is the R/W operation selection bit. A Read operation is selected if this bit is a Logic 1, and a
Serial EEPROM Write operation is selected if this bit is a Logic 0. Upon a compare of the device address byte,
the AT30TSE004A will output an ACK during the ninth clock cycle; if a compare is not true, the device will output
a NACK during the ninth clock cycle and return the device to the low-power Standby Mode.
Table 5-2. Device Address Combinations
Software Device Address Bits
A2, A1, A0
000
001
010
011
100
101
110
111
A2
GND
GND
GND
GND
VCC
VCC
VCC
VCC
Hard-wired Device Address Inputs
A1
GND
GND
VCC
VCC
GND
GND
VCC
VCC
A0
GND
VCC
GND
VCC
GND
VCC
GND
VCC
AT30TSE004A [DATASHEET]
Atmel-8868C-DTS-AT30TSE004A-Datasheet_122013
11
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