UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 210

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

208
8.5.1 Interval timer
/*******************************************************************************/
/*
/*
/*
/*
/*
/*
/*
/*
/*
/*******************************************************************************/
#pragma sfr
#pragma EI
#pragma DI
#define intervalTM0 130
#pragma interrupt INTTM00 intervalint rb2
void main(void)
{
}
/* Timer 0 interrupt function */
void intervalint()
{
/***************************************************/
/*
/* Define variables required for interrupt here
/*
/***************************************************/
/***********************************************************/
/*
/* Describe processing required for interrupt below
/*
/***********************************************************/
}
unsigned int ppgdata;
PCC = 0x0;
ppgdata = 0;
P7 = 0b11111110;
PM7.0 = 0;
TMMK00 = 0;
PRM0 = 0b00000010;
CRC0 = 0b00000000;
CR00 = intervalTM0;
TOC0 = 0b00000111;
TMC0 = 0b00001100;
EI();
while(1);
unsigned int work;
work = ppgdata;
if (work != 0)
{
Cycle set to 130 as intervalTM0 (at 8.38 MHz for 1 ms)
}
Variable ppgdata prepared as rewrite data area
ppgdata to be checked at every INTTM00, and changed if required.
Therefore, if change is required, set the change data in ppgdata.
When changed, ppgdata cleared to 0000.
: Cycle (if 0000, no change)
Setting example of timer 0 interval timer mode
CR00 = work;
ppgdata = 0;
if (work == 0xffff)
{
}
TMC0 = 0b00000000;
CHAPTER 8 16-BIT TIMER/EVENT COUNTER 0
User’s Manual U14046EJ5V0UD
/* Cycle data to be set to CR00 */
/* Data area to be set to timer 0 */
/* Set high-speed operation mode */
/* Set port */
/* Set the following to output */
/* Clear P70 */
/* Set P70 as output */
/* Set interrupt */
/* Cancel INTTM00 interrupt mask */
/* Set timer 0 */
/* Count clock is fx/2^6 */
/* Set CR00 and CR01 to compare register */
/* Set cycle initial value to CR00 */
/* Invert on match with CR00, initial value L */
/* Clear & start on match between TM0 and CR00 */
/* Loop as dummy here */
/* Stop timer */
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/