MC68HC705JP7 Datasheet, PDF (72/242 Pages) Motorola, Inc – HCMOS Microcontroller Unit

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Freescale Semiconductor, Inc.
5.6.5 16-Bit Programmable Timer
A reset has these effects on the 16-bit programmable timer:
• Initializes the timer counter registers (TMRH and TMRL) to a value
of $FFFC
• Initializes the alternate timer counter registers (ACRH and ACRL)
to a value of $FFFC
• Clears all the interrupt enables and the output level bit (OLVL) in
the timer control register (TCR)
• Does not affect the input capture edge bit (IEDG) in the TCR
• Does not affect the interrupt flags in the timer status register (TSR)
• Does not affect the input capture registers (ICRH and ICRL)
• Does not affect the output compare registers (OCRH and OCRL)
5.6.6 Serial Interface
A reset has these effects on the serial interface:
• Clears all bits in the SIOP control register (SCR)
• Clears all bits in the SIOP status register (SSR)
• Does not affect the contents of the SIOP data register (SDR)
A reset, therefore, disables the SIOP and leaves the shared port B pins
as general I/O. Any pending interrupt flag is cleared and the SIOP
interrupt is disabled. Also the baud rate defaults to the slowest rate.
5.6.7 Analog Subsystem
A reset has these effects on the analog subsystem:
• Clears all the bits in the multiplex register (AMUX) bits except the
hold switch bit (HOLD) which is set
• Clears all the bits in the analog control register (ACR)
• Clears all the bits in the analog status register (ASR)
Advance Information
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MC68HC705JJ7 • MC68HC705JP7 — REV 4
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