mc68hc05jb4p Freescale Semiconductor, Inc, mc68hc05jb4p Datasheet - Page 56

• Manufacturer Part Number: mc68hc05jb4p
• Description: Mc68hc705jb4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

GENERAL RELEASE SPECIFICATION
8.4
8.5
RTIF - Real Time Interrupt Flag
TOFE - Timer Overflow Enable
RTIE - Real Time Interrupt Enable
TOFR - Timer Overflow Acknowledge
RTIFR - Real Time Interrupt Acknowledge
OPERATION DURING STOP MODE
When STOP is exited by an external interrupt or an LVR reset or an external
RESET, the internal oscillator will resume, followed by a 128 or 4064 internal pro-
cessor oscillator stabilization delay.
COP CONSIDERATION DURING STOP MODE
In STOP mode, the clock to the Watchdog Timer is stopped and is therefore
impossible to generate COP reset when in STOP mode. The COP function will
resume 128 or 4064 cycles after exiting from STOP.
The RTIF is a read-only flag bit.
The TOFE is an enable bit that allows generation of a TIMER Interrupt upon
overflow of the Timer Counter Register.
The RTIE is an enable bit that allows generation of a TIMER Interrupt by the
RTIF bit.
The TOFR is an acknowledge bit that resets the TOF flag bit. This bit is unaf-
fected by reset. Reading the TOFR will always return a logical zero.
The RTIFR is an acknowledge bit that resets the RTIF flag bit. This bit is unaf-
fected by reset. Reading the RTIFR will always return a logical zero.
1 = Set when the output of the chosen (1 of 4 selections) Real Time
0 = Reset by writing a logical one to the RTIF acknowledge bit, RTIFR.
1 = When set, the TIMER Interrupt is generated when the TOF flag bit is
0 = When cleared, no TIMER interrupt caused by TOF bit set will be
1 = When set, the TIMER Interrupt is generated when the RTIF flag bit is
0 = When cleared, no TIMER interrupt caused by RTIF bit set will be
1 = Clears the TOF flag bit.
0 = Does not clear the TOF flag bit.
1 = Clears the RTIF flag bit.
0 = Does not clear the RTIF flag bit.
Interrupt stage goes active. A TIMER Interrupt request will be
generated if RTIE is also set.
Writing to the RTIF flag bit has no effect on its value. This bit is
cleared by reset.
set.
generated. This bit is cleared by reset.
set.
generated. This bit is cleared by reset.
Freescale Semiconductor, Inc.
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MULTI-FUNCTION TIMER
February 24, 1999
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