Features: ` High Speed dedicatedstructures forFuzzy Logic
(3.5 s to compute a 4 In x 1 Out rule)
` Capability to perform simple boolean and arithmetic operations
` Up to 4 Input,2 Output ConfigurableVariables for each Fuzzy Algorithm and up to 300 Rules
` Up to 16 Triangularand TrapezoidalMembership
Functions for each Input variable
` Up to 256 Singleton Membership Functions for all Consequents
` Programand Data EPROM: 2 Kbytes
` 16 general purpose registers available as Register File
` Working Clock Frequencies: 5, 10 and 20MHz
` On-Chip Clock Oscillator driven by Quartz
Crystal or Ceramic Resonator
` One external interrupt
` Standard TTL compatible input
` CMOS compatible output
` 4 channel 8 bit Analog to Digital Converter
` Bandgap reference 2.5V
` Digital 8 bit I/O port indepedentlyprogrammable with handshake signal
` Serial Communicat ion Interface with asynchronousprotocol (UART)
` Programmable Timer with internal Prescaler
` Internal Power Fuzzy Control to drive external Triac (up to 25mA source, 50 mA sink current)
` Internal Fuzzy controlled PWM to drive an external power device
` Software tools and Emulators availability
` Windowed and One Time Programmable (OTP)
Memory parts available for prototyping and production phases
` 44 pin Plastic (PLCC44) and Ceramic Windowed
Leaded Chip Carrier (CLCC44-W)Pinout
Specifications
| Symbol |
Parameter |
Value |
Unit |
| VDD |
Supply Voltage |
-0.5 to 7 |
V |
| VI |
Input Voltage |
VSS-0.3 to VDD+0.3 (1) |
V |
| VO |
Output Voltage |
VSS-0.3 to VDD+0.3 (1) |
V |
| VDDA,VSSA |
Analog Supply Voltage |
VSS-0.3 to VDD+0.3 (1) |
V |
| VPP |
EPROM Programming Voltage |
13 |
V |
| IO |
Standard Output Source Sink Current (2) |
±20 |
mA |
| TRIACOUT Output Source Sink Current |
±80(3) |
mA |
| TOPT |
Operating Temperature |
0 to +85 |
|
| TSTG |
Storage Temperature |
65 to 150 |
|
Note: Stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.Refer also to the SGS-THOMSON SURE Program and other relevant quality documents.
1. Within these limits, clamping diodes are garanteed to be not conductive.
2. All except TRIACOUT pin
3. For not more than 1 sec.
DescriptionST52E301 (1) and ST52T301 (1) devices are members of theW.A.R.P.family of 8-bit DuaLogic] microcontrollers. They are able to perform, in an efficientway, both booleanand fuzzy algorithms, in order to reach the best performances that the two methodologies allow.
TheST52E301is theerasableEPROMversion and the ST52T301 is the OTP version.
The ST52x301 is completely developed and produced by STMicroelectronics using the reliable high performance CMOSM5E (O.7mm) process.
Thanks to Fuzzy Logic, ST52x301 allows to describea problemusing a linguistic modelinstead ofa mathematicalmodel.In thisway it is very useful and easy to modelize complex system with very high accuracy.
The linguistic approach is based on a set of IF-THEN rules, describing the control behaviour, and on Membership Functions associated to input and output variables.
Fuzzy Inference is a set of operations which computes the output values according with the truth values of the involvedrules.
The flexible I/O configuration of ST52x301 allows to interface with a wide range of external devices, like D/A converters, power control devices (SCRs, TRIACs) and external sensors.
TheOTP (One Time Programmable) device is fully compatible with the EPROM windowed version, which may be used to create prototype systems and for the pre-production phases.
The Fuzzy Core includes the fuzzifier (ALPHA calculator), the inference unit and the defuzzifier.
It allows tomanage up to 300 Rules (4 Inputs and 1 Output).The rules could be shared in different fuzzy subroutines that can be activated by user defined conditions.
The I /O capabil it ies, demanded f rom microcontroller applications, are fulfilled by ST52x301 with 4 Analog Inputs, an asynchronous Peripheral interface (UART) and an 8-bit I/O communicationport inorderto transferdata from/to the on-chip Register File.
The voltage reference provides biasing to the analog portion of the internal circuitry. The internal reference is a 2.5V Bandgap reference.
The voltage reference can supply up to 0.1 mA of current to power external circuitry.
ST52x301 includes an 8-bit sampling Analog to Digital (A/D) Conver ter with a 4 analog channel fast multiplexer (32s conversion time/channel).
It is possible to perform operations on data stored in the Register File (16 bytes), allowing to manage new inputs and feedbackoutputs.
The TRIAC/PWM Driver peripheral allows to manage directly power devices, implementing three different operating modes: Burst Mode (i.e.Thermal Applicat ions), Phase Angle Partialization (i.e. Motors Control by TRIACs) and high frequencyPWMcontrols.
A programmable Timer with Internal Prescaler, using both internal or external clock, is available.
The microcontroller configuration is stored in the internal EPROM.
powerful development environment , FUZZYSTUDIO™ 3.0, consisting of a board an d s o f twa re t o o l s, a l lows an easy configuration and use of ST52x301.
ST 52 x3 0 1 i s f u l l y s up po r t ed b y FUZZYSTUDIO3.0 sof tware tools allowing to graphical ly design a project and obtain an optimized microcode.
ST52x301 exploits a SGS-THOMSON patented strategy to store the MFs in its internal memory.
ST52E301 Data Sheet
