CY8CKIT-006 Cypress Semiconductor Corp, CY8CKIT-006 Datasheet - Page 40

• Manufacturer Part Number: CY8CKIT-006
• Description: KIT DEV PSOC3 LCD SEGMENT
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ 3r

Specifications of CY8CKIT-006

• Main Purpose: Displays, LCD Display
• Embedded: Yes, MCU, 32-Bit
• Primary Attributes: 448 addressable segments
• Secondary Attributes: Configurable LCD pin selection
• Description/function: Evaluation Kit
• Interface Type: USB
• Backlighting: No Backlighting
• Data Bus Width: 8 bit, 16 bit, 32 bit
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: 0 C
• Number Of Segments: 7
• Operating Supply Voltage: 12 V
• Operating Voltage: 3.3 V
• Pixel Format: 16 x 28
• Product: Display Modules
• Software: Software Included
• Touch Panel: No Touch Panel
• For Use With/related Products: PSoC 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Utilized Ic / Part: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-2994

Firmware
5.3.7.1
5.3.7.2
40
Logic Level Low for Timer
The timer component requires a signal on the Reset pin to keep it out of reset after power on reset.
The design does not require the application of a Reset signal on the timer during operation.
Timer ISR
The timer is implemented with the use of a Terminal Count (TC) interrupt. After adding the interrupt
to the tc-pin of the timer component, PSoC Creator generates source files for the interrupt service.
References to the project code interrupt service routine are added to the generated source. In the
generated source file for interrupt handling, there are two places where code must be added by
hand. This code is protected by source code generator statements that preserve the user added
code on subsequent builds. The code that is added is a prototype for the user provided interrupt ser-
vice routine and a call to the interrupt service routine (user ISR).
The Timer ISR is set for an interval of once every 100 ms. For a timeout period of 1s, the timer is ini-
tialized for a 10 count period.
The actual timer component is initialized at the start of the project. When a timing element is
required, a global cont variable is added to the timer user ISR code to decrement that count variable.
Code is also added for the logic to be executed when the count variable reaches zero.
Figure 5-24. Timer ISR Default Built-In Configuration
CY8CKIT-006 PSoC 3 LCD Segment Drive Evaluation Kit Guide, Doc. # 001-52798 Rev. *C
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