MC68HC05K0 Datasheet, PDF (58/154 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Technical Data
Freescale Semiconductor, Inc.
5.4.2 I/O Port Registers
A reset has these effects on input/output (I/O) port registers:
• Clears bits DDRA7–DDRA0 in data direction register A so that
port A pins are inputs
• Clears bits PDIA7–PDIA0 in pulldown register A, turning on port A
pulldown devices (if pulldown devices are enabled by mask
option)
• Clears bits DDRB1 and DDRB0 in data direction register B so that
port B pins are inputs
• Clears bits PDIB1 and PDIB0 in pulldown register B, turning on
port B pulldown devices (if pulldown devices are enabled by mask
option)
• Has no effect on port A or port B data registers
5.4.3 Timer
A reset has these effects on the multifunction timer:
• Clears the timer status and control register
• Clears the timer counter register
5.4.4 COP Watchdog
A reset clears the COP watchdog timeout counter.
Technical Data
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
Resets
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