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Many ideas one solution
EVBeasyPSoC
User’s
Manual
REV 2
2
CONTENTS
1.
Introduction
....................................................................................................................................... 3
Available Version
............................................................................................................................... 3
2.
Board Layout
.................................................................................................................................... 4
Schematic
.............................................................................................................................................. 4
Parts Description
............................................................................................................................... 5
3.
Available Microcontrollers
........................................................................................................ 5
4.
Power Supply
.................................................................................................................................... 6
5.
Peripheral Units
.............................................................................................................................. 7
LED Diodes
............................................................................................................................................. 7
DataFlash Memory
............................................................................................................................. 7
1-Wire Connector
................................................................................................................................ 8
I2C Connector
...................................................................................................................................... 8
RS232 Interface
.................................................................................................................................. 9
Switches
................................................................................................................................................. 9
Relay
....................................................................................................................................................... 10
Buzzer
..................................................................................................................................................... 10
Potentiometers
.................................................................................................................................. 11
7-Segment LED Displays
.............................................................................................................. 11
LM35 Thermometer
......................................................................................................................... 12
RTC DS1307
........................................................................................................................................ 12
LCD Display
......................................................................................................................................... 13
ADJC Potentiometer
....................................................................................................................... 14
ADJREF Potentiometer
................................................................................................................. 14
3V3POT Potentiometer
................................................................................................................. 14
RESET Switch
.................................................................................................................................... 14
6.
Connectors Description
............................................................................................................ 15
7.
Jumpers and LED Description
............................................................................................... 17
8.
Technical Support
....................................................................................................................... 17
9.
Guarantee
......................................................................................................................................... 17
10.
Schematic
.................................................................................................................................... 17
3
1.
Introduction
EVBeasyPSoC is a development board designer for the hobbyist and engineers
who want to quickly prototype their system based on PSoC microcontrollers from
Cypress. 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: thermometer, potentiometer, relay, buzzer, RTC (real time clock),
four seven-segment LED, RS232 interface,1-Wire connector, I2C connector, ISSP
connector, external FLASH memory and LCD display (2x16). The pin headers
provided allow easy access to all these components. In addition, there are eight
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 from),
to facilitate testing and quick development in using the board`s resources.
Available Version
The set EVBeasyPSoC is sold in the following version:
Processor CY8C29466 or CY8C27433
All connectors
Four 7-segment LEDs,
Diodes and switches
Relay 10A 240VAC + LED
Buzzer
Two potentiometers
1-Wire and I2C connectors
LM35 thermometer
RS232 interface + TxD RxD LEDs
DS1307 Real Time Clock ant 3.6V accumulator
External DataFlash memory AT45DB041 form Atmel
Parts Description
1. Prototype Field
2. All Peripherals Connectors
3. Switches
4. Two Potentiometers
5. LM35 Thermometer
6. RESET Switch
7. 3.6V Accumulator
8. Programming Connectors
9. Power Connector
10. Power Supply Connector
11. Relay
12. RS232 Connector
13. I2C Connector
14. 1-Wire Connector
15. SMP Connector
16. Microcontroller with All Pins
17. DataFlash Memory
18. RTC DS1307
19. LM317
20. Four 7-Segment Displays
21. 2x16 Alphanumeric Display
22. LED Diodes
3.
Available Microcontrollers
CY8C21xxx
CY8C24xxx
CY8C27xxx
CY8C29xxx
CY8C21534
CY8C24423
CY8C27443
CY8C29466
Themperature Range
form - 40C to 85C
Package
28 PDIP
CY8C27443
CY8C29466
Internal Oscillator
2.5% 24/48 MHz
2.5% 24/48 MHz
Flash
16kB
32kB
RAM
256B
2kB
Switch Mode Pump
YES
YES
Digital PSoC Blocks
8
16
Analog PSoC Blocks
12
12
Digital IO Pins
24
24
Analog Inputs
12
12
Analog Outputs
4
4
XRES
YES
YES
6
4.
Power Supply
The board should be supplied from external supply with voltage 7..12V AC, or 9..15V DC,
using a standard plug with bolt diameter 2.1mm placed in the supply socket.
The board may be supplied form 3.6V accumulator. Shorting Backup jumper enable
powering directly from accumulator, shorting VBAT jumper enable powering with Switch
Mode Pump Mode. Second option is to power device from external battery using SMP
connector placed on board.
Stabilized voltage VTG is accessible on the connectors of the board extensions.
There are two jumpers placed on the board: SUPPLY and 3V3. The closure of the 3V3 jumper
results in all the circuits being supplied with 3.3V voltage (it can be regulated by 3V3
potentiometer from 1.8V to 3.3V), by the open jumper the voltage will be 5V.
SUPPLY jumper gives the opportunity of connecting voltage omitting the circuits of the bridge
and the regulator.
SMP is a system which can be used as a part of a voltage regulator. For example, it is possible to
supply power to a PSoC microcontroller from a single 1.5V battery.
In the case of battery suply Switch Mode Pump (SMP) system can be used. Its operation is based on
principle of BOOSTDC/DC convertor. This type of convertor gives voltage supply value higher than
battery voltage, which makes possible power suplly with 1.5V battery. For SMP to function properly, it
is necessary to connect, beside battery, a diode, inductivity and a capacitive.
7
5.
Peripheral Units
LED Diodes
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.
Figure 1. LED Diodes
DataFlash Memory
Board have external DataFlash AT45DB041B memory with 4MB space. Memory is power by diode,
which decrease voltage. Is a possibility to power without that diode, correctly from supply source by
short jumper 3V3 placed near memory.
Figure 2. DataFlash Memory Implementation
9
RS232 Interface
There is a DB-9 connector on the board, connected with the ST3232 state converter. On the other
side of the converter there are pin connectors with converter circuit terminals, allowing to plug in to
the processor.
Figure 5. RS232 Implementation
Switches
The board is equipped with 8 micro-switches. Pressing one of them causes grounding of the
corresponding pin on the SW header.
Figure 6. Switches Implementation
10
Relay
Access to the relay circuitry consist 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 0 applied to the
REL pin, will activate the relay. External circuits can be controlled via NC, NO, COM I/O pins.
Figure 7. Relay Implementation
Buzzer
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 `0` applied to the SPK pin, will activate the
speaker.
Figure 8. Buzzer Impedance
11
Potentiometers
The board is equipped with two potentiometers, allowing for simulation of the analog circuit outputs.
The potentiometer enables the adjustment of voltage in the range 0-VTG. The potentiometers output
is accessible on ADJ0 and ADJ1 pin of the MISC connector. Customer can choose a resistance of
potentiometer during buying board.
Figure 9. Potentiometers Implementation
7-Segment LED Displays
The board is equipped with four 7-segment led display. They make an interface between the system
and the user, allowed to display up to four chars. Each led display has two anodes, seven segments
and DP (digital point), which become active after applied to their pin logic level ‘0’.
Figure 10. 7-Segment LED Display Implementation
12
LM35 Thermometer
Thermometer LM35 allows to measure an environment`s temperature and display it on seven-
segment LEDs or on LCD display.
Figure 11. LM35 Implementation
RTC DS1307
The board has one real time clock with accumulator 3V6 (The board can be also supply form
accumulator). The clock communicates with the micro through the I2C interface. All the connections
needed for controlling the DS1307 circuit are brought out to the RTC pin header. The accumulator pin
is also placed on the header.
Figure 12. RTC Implementation
13
LCD Display
The board has one LCD display interface. The LCD connector has four data lines and two control
lines: strobe line E and control line R/S. The display R/W line is connected to ground by jumper; all
other lines are available at the pin header. The adjustment of contrast id done by two way:
by potentiometer ADJ CONT which output pin ADJC must be then connected with LCD`s pin
CONT.
programmable, then LCD`s pin CONT must be connected to the processor.
Figure 13. LCD Display Implementation
14
ADJC Potentiometer
There is a ADJC potentiometer, which allows to control the contrast on LCD. Then output pin ADJC
must be connected with LCD`s pin CONT.
ADJREF Potentiometer
Allow to adjust reference voltage of ADC in range from 0V to VTG. It is connected by jumper AREF to
one of microcontroller’s port.
3V3POT Potentiometer
The board is equipped with one potentiometer, allowing to regulate voltage VTG between 3.3 – 1,25V
(even if 3V3 jumper is closed).
RESET Switch
Allow to apply external reset.
17
7.
Jumpers and LED Description
8.
Technical Support
include the following information:
Number of the board version (e.g. REV 1)
A detailed description of the problem
9.
Guarantee
The board is covered by a six-month guarantee. All faults and defects not caused by the user will be
removed at the Producer’s cost. Transportation costs are borne by the buyer.
The Producer takes no responsibility for any damage and defects caused in the course of using the
board.
10.
Schematic
/
