TSS400QFN-S1 Microcontroller uPOWER PROGRAMMABLE HIGH-PRECISION SIGNAL SENSOR

12-Bit ADC With 4-Multiplexed Inputs Wide Supply Voltage Range 5.5 V Low Power Consumption Typical at VDD µA in OFF Mode µA in DONE Mode µA in ACTIVE Mode Without A/D Conversions µA in ACTIVE Mode With A/D Conversions Onboard 4-MUX 56-Segment LCD Driver

Onboard Ratiometric Current Source Programmable From mA × (SVDD/V) mA × (SVDD/V) Two Independent Crystal Controlled Timers (32.768 kHz) Internal MOS Oscillator Serves as System Clock Programmable Microcontroller Simple and Easy Programming With SMPLTM Macro Language

The TSS400 Standard ( TSS400-S1) sensor signal processor is an ultra-low power, intelligent, / D converter ( ADC) that has been preprogrammed with the Sensor Macro Programming Language ( SMPLTM ) interpreter. This language allows fast, easy, and economical customization of the to a wide range of sensor signal processing applications. The application specific programs that customize the operation of the TSS400-S1 are stored in external EEPROMs along with any additional data required by the application. The main components of the TSS400-S1 are a four-input multiplexed 12-bit ADC, a programmable constant current source, an LCD driver capable of driving 56 segments using a 4-MUX drive scheme, two crystal controlled independent timers, an on-board RAM, six output-only pins a 4-bit programmable / O port K4, K8 and I2C serial EEPROM communications. Operation of the TSS400-S1 is very adaptive because it is controlled by a SMPL language program. These programs can be stored in an external EEPROM (standalone mode) or stored in a host computer ( slave mode The SMPL language is a powerful, easy to learn, and easy to use macro language. Some of the SMPL language features are single-command EEPROM read and EEPROM write operations, three levels of subroutines, a single-command / D conversion instruction that specifies the number of conversions and the type of conversion (either compensated or noncompensated) to be made, and two reduced power consumption modes ( DONE and OFF

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

SIGNAL NAME A3, A4 AGND COM3, COM4 I/O INITN S1 S14 SVDD TOSCIN TOSCOUT VDD VSS PIN NUMBER I/O I I/O I Analog input for the ADC Analog ground LCD commons Communication input / output Initialization. INITN is normally tied to VDD and held high. If INITN is held low for more than 10 µs, the TSS400-S1 will begin a warm start. 4-bit programmable input / output port Test. This pin must be tied to VSS during normal operation. EEPROM clock. Controls the EEPROM clock. Digital outputs Controls EEPROM power switch Current source ( programming resistor connection ) LCD segments Switchable VDD Oscillator input. Input connection for crystal oscillator ( 32.768 kHz Oscillator output. Output connection for crystal oscillator ( 32.768 kHz Power supply Ground DESCRIPTION