Details, datasheet, quote on part number: MIKROE-2659
PartMIKROE-2659
Category
TitleEINK CLICK
Description

MikroElektronika’s MIKROE-2659 eINK click board is an adapter for connecting eINK displays with a 24-pin ribbon cable. The eINK display sold with the click can retain the image even when the power is off. The click board is designed to run on a 3.3 V power supply and communicates over serial peripheral interface (SPI) interface. The display uses electronic ink, which makes the display “bistable” so the display consumes power only when something is changing on the screen. Power consumption of the target device is reduced considerably since the display retains the image even when the power is off. eINK displays have good sunlight readability, comparable to reading something on real paper. It has a wide viewing angle and the resolution of 172 dots x 72 dots. The color of the display has four scales: black, dark gray, light gray, and white. The power consumption, while the display is on, is around 40 mW. The onboard NXP LM75A temperature sensor is used for temperature calibration from the look-up table.



CompanymikroElektronika
DatasheetDownload MIKROE-2659 datasheet
  
MIKROE-2659 photo

Others parts numbering
EA EPA20-A: LCD TFT EPD 172X72 2"

 

Features, Applications

The is a temperature-to-digital converter using an on-chip band gap temperature sensor and Sigma-delta A-to-D conversion technique. The device is also a thermal detector providing an overtemperature detection output. The LM75A contains a number of data registers: Configuration register (Conf) to store the device settings such as device operation mode, OS operation mode, OS polarity and OS fault queue as described in Section 7 "Functional description"; temperature register (Temp) to store the digital temp reading, and set-point registers (Tos and Thyst) to store programmable overtemperature shutdown and hysteresis limits, that can be communicated by a controller via the 2-wire serial I2C-bus interface. The device also includes an open-drain output (OS) which becomes active when the temperature exceeds the programmed limits. There are three selectable logic address pins so that eight devices can be connected on the same bus without address conflict. The LM75A can be configured for different operation conditions. It can be set in normal mode to periodically monitor the ambient temperature, or in shutdown mode to minimize power consumption. The OS output operates in either of two selectable modes: OS comparator mode or OS interrupt mode. Its active state can be selected as either HIGH or LOW. The fault queue that defines the number of consecutive faults in order to activate the OS output is programmable as well as the set-point limits. The temperature register always stores 11-bit 2's complement data giving a temperature resolution of 0.125 C. This high temperature resolution is particularly useful in applications of measuring precisely the thermal drift or runaway. The device is powered-up in normal operation mode with the OS in comparator mode, temperature threshold 80 C and hysteresis of 75 C, so that it can be used as a stand-alone thermostat with those pre-defined temperature set points.

I Pin-for-pin replacement for industry standard LM75 and offers improved temperature resolution 0.125 C and specification of a single part over power supply range from V I Small 8-pin package types: SO8 and I I2C-bus interface with to 8 devices on the same bus I Power supply range from V I Temperatures range from I 11-bit ADC that offers a temperature resolution 0.125 C

I Temperature accuracy of: 2 C from 3 C from C I Programmable temperature threshold and hysteresis set points I Supply current A in shutdown mode for power conservation I Stand-alone operation as thermostat at power-up I ESD protection exceeds 2000 V HBM per V MM per JESD22-A115 and 1000 V CDM per JESD22-C101 I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

System thermal management Personal computers Electronics equipment Industrial controllers

Table 1. Ordering information Package Name SO8 TSSOP8 Description plastic small outline package; 8 leads; body width 3.9 mm plastic thin shrink small outline package; 8 leads; body width 3 mm Version SOT96-1 SOT505-1 Type number

Table LM75AD LM75ADP Ordering options Topside mark LM75A L75A Temperature range Tamb +125 C Tamb +125 C Type number

BIAS REFERENCE POINTER REGISTER COUNTER 11-BIT SIGMA-DELTA A-to-D CONVERTER CONFIGURATION REGISTER TEMPERATURE REGISTER TOS REGISTER THYST REGISTER OS

Table 3. Symbol SDA SCL OS GND A2 Pin description Pin Description Digital I/O. I2C-bus serial bidirectional data line; open-drain. Digital input. I2C-bus serial clock input. Overtemp Shutdown output; open-drain. Ground. To be connected to the system ground. Digital input. User-defined address bit 2.


 

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