Cypress CY8C20x66 manual Document Conventions, Acronyms Used, Units of Measure, Numeric Naming

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CY8C20x36/46/66, CY8C20396

Document Conventions

Acronyms Used

The following table lists the acronyms that are used in this document.

Table 1. Acronyms

Acronym	Description
AC	alternating current

API	application programming interface

CPU	central processing unit

DC	direct current

FSR	full scale range

GPIO	general purpose IO

GUI	graphical user interface

ICE	in-circuit emulator

ILO	internal low speed oscillator

IMO	internal main oscillator

IO	input/output

LSb	least-significant bit

LVD	low voltage detect

MSb	most-significant bit

POR	power on reset

PPOR	precision power on reset

PSoC®	Programmable System-on-Chip™

SLIMO	slow IMO

SRAM	static random access memory

Units of Measure

A units of measure table is located in the Electrical Specifications section. Table 9 on page 15 lists all the abbreviations used to measure the PSoC devices.

Numeric Naming

Hexadecimal numbers are represented with all letters in uppercase with an appended lowercase ‘h’ (for example, ‘14h’ or ‘3Ah’). Hexadecimal numbers may also be represented by a ‘0x’ prefix, the C coding convention. Binary numbers have an appended lowercase ‘b’ (for example, 01010100b’ or ‘01000011b’). Numbers not indicated by an ‘h’, ‘b’, or 0x are decimal.

Document Number: 001-12696 Rev. *D

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Contents Features PSoC Core Block DiagramPSoC Core PSoC Functional OverviewCapSense Analog System Additional System Resources Getting StartedPSoC Designer Software Subsystems Development ToolsOrganize and Connect Configure ComponentsDesigning with PSoC Designer Select ComponentsNumeric Naming Document ConventionsAcronyms Used Units of MeasurePin Type Name Description Digital Analog PinoutsPin QFN Pin Definitions CY8C20236, CY8C20246 PSoC DeviceQFN Pin Definitions CY8C20396 PSoC Device 2 Pin QFN with USB PinoutQFN Name Description Pin Definitions CY8C20666 PSoC Device 2Pin Digital Analog Name Description Digital Analog Pin SsopPin Definitions CY8C20566 PSoC Device2 Pin NoPin Definitions CY8C20066 PSoC Device 2 Pin QFN OCDUnits of Measure Symbol Unit of Measure Electrical SpecificationsADC Electrical Specifications Comparator User Module Electrical SpecificationsDC Accuracy DC Chip-Level Specifications Operating TemperatureAbsolute Maximum Ratings DC General Purpose IO Specifications Input Low Voltage Vdd High Output VoltageLow Output Voltage IOL = 10 mA, maximum of 30 mA sink Low Output Voltage IOL = 5 mA, maximum of 20 mA sinkDC Low Power Comparator Specifications DC Analog Mux Bus SpecificationsDC Programming Specifications DC POR and LVD SpecificationsAC General Purpose IO Specifications AC Chip-Level SpecificationsAC Analog Mux Bus Specifications AC Comparator SpecificationsAC Programming Specifications AC External Clock SpecificationsAC I2C Specifications AC SPI SpecificationsPin Chip On Lead 3x3 mm Sawn Packaging InformationPin 5x5 x 0.6 mm QFN Thermal Impedances per Package Typical θ JA Solder Reflow Peak TemperatureThermal Impedances Important NotesSoftware Development Tool SelectionAll development kits are sold at the Cypress Online Store Device Programmers Evaluation ToolsAll evaluation tools are sold at the Cypress Online Store Third-Party Tools Build a PSoC Emulator into Your Board Accessories Emulation and ProgrammingOrdering Information Bytes Blocks Pins InputsCapSense Digital IO Analog Origin of Change Submission Date Description of Change Document HistoryWorldwide Sales and Design Support Products PSoC Solutions Sales, Solutions, and Legal Information