CY8CKIT-030 Cypress Semiconductor Corp, CY8CKIT-030 Datasheet - Page 14

• Manufacturer Part Number: CY8CKIT-030
• Description: BOARD EVAL PSOC 3
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ 3r
• Type: MCUr

Specifications of CY8CKIT-030

• Contents: Board, Cables, Display, Software
• Processor To Be Evaluated: CY8C38 Family
• Processor Series: CY8C38
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 1.8 V to 5.5 V
• Core Architecture: 8051
• Silicon Core Number: CY8C38xxx
• Silicon Family Name: PSoC
• Kit Contents: Board, LCD, Cable, CD, Guide
• Features: High Precision Analog
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PSoC® 3
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-3090

Hardware
4.2.1.1
4.2.1.2
14
Power Supply Jumper Settings
Figure 4-3. Jumper Settings
Two jumpers govern the power rails on the board. J10 is responsible for the selection of Vddd (digital
power) and J11 selects Vdda (analog power).
The jumper settings for each power scheme are as follows.
Warning:
■
■
Grounding Scheme
The board is designed considering analog designs as major target applications. Therefore, the
grounding scheme in the board is unique to ensure precision analog performance.
There are three types of ground on this board:
■
■
■
When creating custom circuitry in the prototyping area provided on the board, remember to use the
Vssa for the sensitive analog circuits and Vssd for the digital ones.
Port E on the board is the designated analog expansion connector. This connector brings out
ports 0, 3, and 4, which are the best performing analog ports on PSoC 3 and PSoC 5 devices. The
expansion connector, port E, has two types of grounds. One is the analog ground (GND_A in silk
Vdda = 5 V, Vddd = 5 V
Vdda = 3.3 V, Vddd = 3.3 V
Vdda = 5 V, Vddd = 3.3 V
Vdda = 3.3 V, Vddd = 5 V
The PSoC device performance is guaranteed when Vdda is greater than or equal to Vddd. Fail-
ure to meet this condition can have implications on the silicon performance.
When USB power is used, ensure a 3.3 V setting on both analog and digital supplies. This is
because, the 5 V rail of the USB power is not accurate and is not recommended.
GND - This is the universal ground where all the regulators are referred. Both Vssd and Vssa
connect to this ground through a star connection.
Vssd - This is the digital ground and covers the digital circuitry present on the board, such as
RS232 and LCD.
Vssa - This is the analog ground and covers the grounding for analog circuitry present on the
board, such as the reference block.
Powering Scheme
J10 in 5 V setting and J11 in 5 V setting.
J10 in 3.3 V setting and J11 in 3.3 V setting.
J10 in 3.3 V setting and J11 in 5 V setting.
Can be achieved, but is an invalid condition because the PSoC 3 silicon
performance cannot be guaranteed.
CY8CKIT-030 PSoC 3 Development Kit Guide, Doc. # 001-61038 Rev. **
Jumper Settings