EVBST7_02_en.pdf
(
1205 KB
)
Pobierz
EVBST7-0 2
Evaluation board for
Microcontrollers, series ST7Lite1 and ST7Lite2
User’s
manual
R
Many ideas one solution
REV 1.2
1. Introduction
EVBST7-02-XXX is a development board designed for the hobbyists and engineers
who want to quickly prototype their system based on LITE1 and LITE2 family of
microcontrollers from ST Microelectronics. Developer has access to all pins of the
micro, which are brought to the header (pin connectors) and labeled accordingly.
Depending upon the 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). The pin headers
provided allow easy access to all 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. The power circuitry on board (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 the board’s resources.
We wish great success and full satisfaction while designing and
constructing appliances based on EVBST7-02-XXX
2
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 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. Programmer header
16. Standard LCD display connector
17. Socket for lithium battery
18. Real time clock M41T00 (optional)
19. Socket for processors LITE10, 15, 19, 20, 25, 29
3
3. Supported processors
ST7LITE1
ST7LITE2
ST7LITE10
ST7LITE15
ST7LITE25
ST7LITE19
ST7LITE20
ST7LITE29
FLASH
4kB
8kB
RAM(stos)
256(128)B
384(128)B
EEPROM
-
-
128B
-
-
256B
Peripherals
Lite Timer with Watchdog,
Autoreload Timer, SPI,
10-bit ADC with Op-Amp
Lite Timer with
Watchdog,
Autoreload Timer
with 32-MHz clock,
SPI, 10-bit ADC with
Op-Amp
Lite Timer with Watchdog,
Autoreload Timer, SPI,
10-bit ADC with Op-Amp
Lite Timer with
Watchdog,
Autoreload Timer with
32-MHz clock,
SPI, 10-bit ADC with
Op-Amp
Supply voltage
2.4V – 5.5V
Clock frequency
To 8MHz
(out OSC to 1MHz)
To 8MHz (out OSC
to 16MHz
and in 1MHz RC 1%
PLLx8/4MHz)
To 8MHz
(out OSC to 1MHz)
To 8MHz (out OSC to
16MHz
and in 1MHz RC 1%
PLLx8/4MHz)
Temperature range
from -40ºC to 85ºC
Cases
SO20 300”, DIP20
4. Power supply for board
Recommended external power supply voltage is 7-12V AC, or 9-15V DC. A standard
power jack (bolt diameter 2.1mm - negative) is provided at the edge of the board.
Stabilized voltage Vdd is available on the double header and on the prototype area of
the board. The selection of the Vdd is provided through a 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 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
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
Plik z chomika:
mikroprocesory
Inne pliki z tego folderu:
ADPmegaXXX_en.pdf
(67 KB)
AVR JTAG ICE User Guide.pdf
(539 KB)
EVBavr02_en.pdf
(640 KB)
EVBavr03_en.pdf
(663 KB)
EVBavr05_en.pdf
(604 KB)
Inne foldery tego chomika:
ARM
ARM Tools
AVR programy
AVR toolchain
EVB100
Zgłoś jeśli
naruszono regulamin