EVBST7_01_en.pdf

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EVBST7-0 1 Evaluation board for

Microcontrollers, series ST7Lite0 and ST7SuperLite.

R

User’s

manual

Many ideas one solution

REV 1.2

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1. Introduction

EVBST7-01-XXX is a development board designed for the hobbyists and engineers,

who want to quickly prototype their system based on LITE0 and LITES family of

microcontrollers from ST Microelectronics. Developer has an access to all the pins of

the micro, which are brought to the header (pin connectors) and labeled accordingly.

Depending upon board’s configuration (listed versions) some or all of the following

components are found on the board: analog thermometer, potentiometer, relay,

buzzer, RTC (real time clock) and LCD display (2x16). Provided pin headers allow

easy access to all of these components. In addition, there are four micro-switches

and eight diodes, which could be connected to any of the pin connectors or additional

components, which may be placed on the large, adjacent prototype area. Board’s

power circuitry (bridge, voltage regulator) eliminates the need for an external

regulated power supply. This board comes with the several examples of the C code

routines (source form), to facilitate testing and quick development in using board’s

resources.

We wish you a lot of success and full satisfaction, while designing

and constructing appliances based on EVBST7-01-XXX

2

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2. Board layout

1. Prototype area

2. Additional components connector

3. LED’s and micro-switches

4. Potentiometer (may be connected to the ADC of the processor)

5. LM35 thermometer

6. RESET micro-switch and power supply LED

7. 2x16 display (optional)

8. Buzzer

9. LM317 voltage regulator

10. Power ON/OFF switch

11. Input power jack (AC/DC)

12. Relay header

13. Programmer header

14. Dual header – port A, port B

15. Socket for processors LITE02, 05, 09 and LITES2, S5

16. Standard LCD display connector

17. Socket for lithium battery

18. M41T00 real time clock (optional)

3

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3. Supported microcontrollers

ST7SUPERLITE

ST7LITE0

ST7LITES2

ST7LITES5

ST7LITE02

ST7LITE05

ST7LITE09

FLASH

1kB

1kB

1.5kB

1.5kB

1.5kB

RAM(stos)

128(64)B

128(64)B

128(64)B

128(64)B

128(64)B

EEPROM

-

-

-

-

128B

Peripherals

LT Timer/Wdg,

AT Timer/1

PWM,

SPI

LT Timer/Wdg,

AT Timer

/1PWM,

SPI, 8-bit ADC

LT Timer/Wdg,

AT Timer

/1PWM,

SPI

LT Timer/Wdg,

AT Timer

/1PWM,

SPI, 8-bit ADC

LT Timer/Wdg,

AT Timer /1 PWM,

SPI, 8-bit ADC/op AMP

Voltage

supply

2.4V – 5.5V

Clock

frequency

1MHz RC 1% + PLLx4/8MHz

Temperature

range

from -40ºC to 80ºC

Cases

SO16 150”, DIP16

4. Power supply

Recommended external power supply voltage is 7-12V AC, or 9-15V DC. Standard

power jack (bolt diameter 2.1mm - negative) is provided at the edge of the board.

Stabilized voltage Vdd is accessible on the double header and on the prototype area

of the board. The selection of the Vdd is provided thru 3V3 header. The default

voltage Vdd is 5VDC (no jumper on 3V3 header). By placing a jumper Vdd becomes

3.3 VDC. The SUPPLY header allows for the direct access to the power jack input.

Placing a jumper bypasses the bridge and voltage regulator.

5. Peripheral circuits

5.1. LED’s

The board has 8 LED diodes, which make the simplest interface between the system

and the user. This is especially useful for the beginners, who want to manipulate or

debug their program with different hardware configurations. The diode turns on after

grounding of the associated LDn (n = 0 – 8) pin.

V dd

R

1 k

L Dn

L ED

L D1

L D2

L D3

L D4

L Dn

4

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5.2. Switches

The board is equipped with 4 micro-switches. Pressing one of them causes

grounding of the corresponding pin on the KEY header.

V d d

R

1 0 k

S W n

S n

S W

K EY

S W 1

S W 2

S W 3

S W 4

G ND

5.3. Relay

Access to the relay circuitry consists of the REL pin of the MISC header and pins:

NC, NO, COM of the relay header. REL pin is indirectly connected to the base of the

transistor. Logic level 1 (5 or 3.3 VDC) applied to the REL pin, will activate the relay.

External circuits can be controlled via NC, NO, COM I/O pins.

Vdd

R

4 k7

Q

REL

BC 85 7

COM

D

RL1

RELAY

GND

5.4. Acoustic indicator

The board has an acoustic indicator turned on and off by the transistor. The base of

the transistor is connected to the SPK pin of the MISC header. Logic level ‘1’ (5 or

3.3 VDC) applied to the SPK pin, will activate the buzzer.

Vdd

R8

4k7

Q2

BC 557

SPK

SPK

GND

BUZER

5

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Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin