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Adjusting the Frequency of the High-speed On-chip Oscillator Using a Commercial Frequency
4.
Function Table and Flow Chart
4.1 Function Table
Declaring
Outline
Argument
Return Value
Function Description
Declaring
Outline
Argument
Return Value
Function Description
Declaring
Outline
Argument
Return Value
Function Description
Declaring
Outline
Argument
Return Value
Function Description
Declaring
Outline
Argument
Return Value
Function Description
REJ05B0471-0100Z/Rev.1.00
void main(void)
Main
Argument Type
None
Return Value Type
Value
None
Initializes the SFR and performs LOOP processing
void sfr_init(void)
SFR initialize
Argument Type
None
Return Value Type
Value
None
Initializes the SFR
void first_hz_adjut(void)
Initial frequency adjust
Argument Type
None
Return Value Type
Value
None
Adjusts the high-speed on-chip oscillator during initial startup time
void write_ringadjust_data(unsigned char data)
Frequency adjustment value write
Argument Type
unsigned char data
Return Value Type
Value
None
Writes the HR1 register adjustment value to the flash ROM
void flash_open_ew1_mode(void)
EW1 mode enter
Argument Type
None
Return Value Type
Value
None
Enables CPU rewrite mode (EW1 mode)
July 2004
R8C/11, R8C/13 Group
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
Meaning
Adjustment value
Meaning
Meaning
Meaning
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