ST52T301/E301

8-Bit OTP/EPROM

DuaLogic

MCUs WITH ADC,

UART, TIMER, TRIAC & PWM DRIVER

ADVANCED DATA SHEET

High Speed dedicated structures for Fuzzy 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 Triangular and Trapezoidal Membership
Functions for each Input variable

Up to 256 Singleton Membership Functions for
all Consequents

Program and Data EPROM: 2 Kbytes

16 general purpose registers ava ilable 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 indepedently programmable
with handshake signal

S e r i al

C om m u n ic at i o n In t er fa ce wi t h

asynchronous protocol (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)

July 1998

CLCC44-W

PLCC44

1.1 GENERAL DESCRIPTION

ST52E301

(1)

and ST52T301

(1)

devices are

members of the W.A.R.P.family of 8-bit

DuaLogic

microcontrollers. They are able to perform, in an
efficient way, both booleanand fuzzy algorithms, in
order to reach the best performances that the two
methodologies allow.

The ST52E301is the erasableEPROMversion and
the ST52T301 is the OTP version.

The ST52x301 is completely developed and
produced by STMicroelectronics using the reliable
high performance CMOSM5E (O.7

m) process.

Thanks to Fuzzy Logic, ST52x301 allows to
describe a problem using a linguistic model instead
of a 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 involved rules.

Note: (1) Formerly W.A.R.P.3TC

1/99

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.

The OTP (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 to manage 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.

T he

I / O

c a p ab i l it i e s,

de m an d ed

f r om

microcontroller applications, are fulfilled by
ST52x301 with 4 Analog Inputs, an asynchronous
Peripheral interface (UART) and an 8-bit I/O
communicationport in orderto 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
Dig it al (A/ D) C o n ve r te r w i t h a 4 a n a lo g

channel fa st multiplexer (32

s c o n ve rs i o n

time/channel).

It is possible to perform operations on data stored
in the Register File (16 bytes), allowing to manage
new inputs and feedback outputs.

The TRIAC/PWM Driver peripheral allows to
manage directly power devices, implementing
three different operating modes: Burst Mode
( i. e.T h e r m al A pp li ca t ion s) , Ph a s e A ng le
Partialization (i.e. Motors Control by TRIACs) and
high frequency PWM controls.

A programmable Timer with Internal Prescaler,
using both internal or external clock, is available.

The microcontroller configuration is stored in the
internal EPROM.

p o we r f u l

de vel o pm en t

e nvi r on m e nt ,

FUZZYSTUDIO

3.0, consisting of a board

a n d s o f t w a r e t o o l s , a l l o w s a n e a s y
configuration and use of ST52x301.

S T 5 2 x 3 0 1

i s

f u l l y

s u p p o r t e d

b y

FUZZYSTUDIO3.0 so f t wa r e t o ols a llow in g
to gra ph ic al ly d es ig n a project and obtain an
optimized microcode.

ST52x301 exploits a SGS-THOMSON patented
strategy to store the MFs in its internal memory.

OSCILLATO R

ALU

FUZZY

CORE

SYSTEM

REGISTERS

CONTROL

UNIT

REGISTER

FILE

PARALLEL

I/O PORT

2kBytes

EPROM

TRIAC/PWM

DRIVE R

PROG.TIMER

WITH

PRESC ALER

SCI

A/D

CONVERT ER

BAND-GAP

REFERENCE

Figure 1. ST52x301 Architectural Block Diagram

2/99

ST52T301/E301

PIN

NAME

TYPE

Programming Phase

Working Phase

not connected

Analog V

Analog Ground

EPROM Digital Power Supply

EPROM Digital Ground

EPROM Programming

Power supply (12V

±5%)

EPROM V

(5V

±10%)

Digital Power Supply

Digital Ground

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

I/O

I/O EPROM Data

Digital I/O

READY

I/O port Handshaking Signal

Digital Output

TEST

(must be set to 0)

MAIN2

I/O

Zero Crossing/Prescaler Output

MAIN1

Zero Crossing

Digital Power Supply

Digital Ground

TRIACOUT

Triac/PWM Driver Output Pulses

MODE

Functionment Mode Selector

RESET

General Reset

CE/INT

Chip Enable EPROM

External Interrupt

TIMEROUT

Output Timer

ERES / TRES

EPROM Address Counter Reset

External Timer Reset

OE / TCTRL

EPROM Output Enable

Timer Start/Stop Signal

OSCout

I/O

Oscillator Output

OSCin

Oscillator Input

CADD / TCLK

EPROM Change Address Clock

Timer External Clock

Digital Ground

Digital Power Supply

TxD

SCI Output

RxD

SCI Input

not connected

AIN3

Ainp

Analog Input

AIN2

Ainp

Analog Input

AIN1

Ainp

Analog Input

AIN0

Ainp

Analog Input

Aout

Band Gap Output

Table 1. PLCC44 and CLCC44-W Pin Configuration

4/99

ST52T301/E301

1.2 PIN DESCRIPTION

DD,

, EV

SS,

, AV

SS,

. In order to

avoid noise disturbances, the power supply of the
digital part is kept separated from the power supply
of the analog part.

DD.

Main Power Supply Voltage (5V 10%).

. Digital circuit Ground.

DD.

EPROM Main Power Supply Voltage (5V

10%).

. EPROM Digital circuit Ground.

. Analog V

of the Analog to Digital

Converter.

.AnalogV

of theAnalog to DigitalConverter.

Must be tied to V

. Main Power Supply for the internal EPROM

(12.5V 5%).

OSCin and OSCout. These pins are internally
connected with the on-chip oscillator circuit. A
quar tz crystal or a ceramic resonator can be
connectedbetween these two pins in order to allow
the correct operations of ST52x301 with various
stability/cost trade-offs. An external clock signal
can be applied to OSCin, in this case OSCout must
be grounded.

RESET. This signal is used to restart ST52x301 at
the beginningof its program.It also allows to select
the program mode for the EPROM.

INT. External interrupt active on rising or falling
edge.

AIN0-AIN3. These 4 lines are connected to the
inputs of the analog multiplexer. They allow to
acquire 4 analog inputs.

BG. A Voltage equal to 2.5V is available on this pin.
It can be used for Analog signal conditioning.

P0-P7. These 8 lines are organizedas one I/O port.
During the Programming phase such port is used
for the EPROM data read/write.

READY. Handshake signal of the parallel port.

P8. Digital output.

TxD. Serial data output of

the SCI transmitter

block.

RxD. Serial data input of

the SCI receiver

block.
TRES, TCLK, TCTRL, TIMEROUT. These pins are
related with the internal Programmable Timer. The
Timer can be reset externally by using TRES. In
Working Mode, TRES resets the address counter
of the Timer. TRES is active at low level
The Timer Clock can be the internal clock or can
be supplied externally by using the pin TCLK.
An external Start/Stopsignal can be used to control
the Timer throughthe pin TCTRL.The Timeroutput
is available on the pin TIMEROUT.
MAIN1, MAIN2, TRIACOUT. ST52x301 is able to
drive a TRIAC in two different modes: Burst mode
or Phase Angle Partialization control mode.
The Burst mode is used for thermal regulation.
MAIN1 and MAIN2 signals are used to detect the
zero crossing of the main voltage.
The pulse to drivethe TRIACis givenby TRIACOUT
pin.
It is possible to use the same pins to implement a
PWM Driver. In this case it is possible to fix the
period of PWM and to change the duty cycle on fly.
The PWM output is given by TRIACOUT pin.
CE, OE, ERES, CADD, V

. These pins are used

to manage the EPROM during the Programming
p ha s e . D ur i n g t h e P r o g ra m m i ng ph a se
(programming) V

must be set at 12V. In the

Working phase V

must be equal to V

ERES in Programming Mode resets the address
counter of the EPROM; it is active at high level.
In the Working phase OE, CE and CADD are used
like handshaking signals for the parallel port.
MODE. I t s el ec ts t h e fun ct i on ment mo d e
(Programming or Working mode).
TEST. It enables the testing functionalities; during
the Programming and Working phaseit must be set
to 0.

5/99

ST52T301/E301

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ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: ST52T301P