SW500008 Microchip Technology, SW500008 Datasheet - Page 177

• Manufacturer Part Number: SW500008
• Description: PICC-18 STD
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC18r

Specifications of SW500008

• Supported Families: PIC18
• Core Architecture: PIC
• Software Edition: Standard
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC18
• Tool Function: Compiler
• Tool Type: Compiler
• Lead Free Status / RoHS Status: Not applicable / RoHS Compliant
• For Use With/related Products: PIC18 Series
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 015; 778-1001; 778-1001

Library Functions
__delay_ms
Synopsis
Description
This routine is defined as a preprocessor macro. The macro interfaces with library routine __de-
lay_400_cycles(). The parameter in this macro, x, defines the number of milliseconds that the pro-
gram will be delayed by calling this macro. This macro requires the definition of the preprocessor
symbol _XTAL_FREQ. This value that this symbol should be defined with is the oscillator frequency
(in Hertz) used in your system. The maximum delay period that can be requested varies linearly
according to the _XTAL_FREQ setting. Some limits of x that __delay_ms(x) can use for various fre-
quencies are given in table A.1.
quested.
See also
__delay_400_cycles()
Should these limits be exceeded the actual period of delay will be significantly less than re-
__delay_ms(x)
Table A.1: Maximum delay versus system frequency
System frequency
40 MHz
20 MHz
10 MHz
Maximum delay
2621 ms
5242 ms
10484 ms
163