Freescale Semiconductor MCF51QE128RM manual Title Chapter Parallel Input/Output Control

Section Number		Title	Page
		Chapter 6
	Parallel Input/Output Control
6.1 Port Data and Data Direction			113
6.2 Pull-up, Slew Rate, and Drive Strength		........................................................................................	114
6.2.1 Port Internal Pull-up Enable			114
6.2.2 Port Slew Rate Enable			114
6.2.3 Port Drive Strength Select			115
6.3 Port Data Set, Clear and Toggle Data Registers			115
6.3.1 Port Data Set Registers			116
6.3.2 Port Data Clear Registers			116
6.3.3 Port Data Toggle Register			116
6.4 V1 ColdFire Rapid GPIO Functionality		........................................................................................	116
6.5 Keyboard Interrupts			116
6.5.1	Edge Only Sensitivity		117
6.5.2 Edge and Level Sensitivity			117
6.5.3	Pull-up/Pull-down Resistors		117
6.5.4	Keyboard Interrupt Initialization		118
6.6 Pin Behavior in Stop Modes			118
6.7 Parallel I/O, Keyboard Interrupt, and Pin Control Registers			118
6.7.1	Port A Registers		118
	6.7.1.1 Port A Data Register (PTAD)		119
	6.7.1.2 Port A Data Direction Register (PTADD)		119
	6.7.1.3 Port A Pull Enable Register (PTAPE)		119
	6.7.1.4 Port A Slew Rate Enable Register (PTASE)		120
	6.7.1.5 Port A Drive Strength Selection Register (PTADS)		120
6.7.2	Port B Registers		121
	6.7.2.1 Port B Data Register (PTBD)		121
	6.7.2.2 Port B Data Direction Register (PTBDD)		121
	6.7.2.3 Port B Pull Enable Register (PTBPE)		122
	6.7.2.4 Port B Slew Rate Enable Register (PTBSE)		122
	6.7.2.5 Port B Drive Strength Selection Register (PTBDS)		123
6.7.3	Port C Registers		123
	6.7.3.1 Port C Data Register (PTCD)		123
	6.7.3.2 Port C Data Direction Register (PTCDD)		124
	6.7.3.3 Port C Data Set Register (PTCSET)		124
	6.7.3.4 Port C Data Clear Register (PTCCLR)		124
	6.7.3.5 Port C Toggle Register (PTCTOG)		125
	6.7.3.6 Port C Pull Enable Register (PTCPE)		125
	6.7.3.7 Port C Slew Rate Enable Register (PTCSE)		126
	6.7.3.8 Port C Drive Strength Selection Register (PTCDS)		126
6.7.4	Port D Registers		126
	6.7.4.1 Port D Data Register (PTDD)		126
	MCF51QE128 MCU Series Reference Manual, Rev. 3
10			Freescale Semiconductor
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