ML63611 User’s Manual
Chapter 10 Ports (INPUT, I/O PORT)
10 – 9
OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
(2) Port A direction register (PADIR)
PADIR is a 4-bit special function register (SFR) which specifies the port input/output direction for each bit.
Pins corresponding to PADIR bits set to “0” are input, and those corresponding to bits set to “1” are output.
At system reset all bits in PADIR are set to “0”, and port A is initialized to input mode.
•
Port A
PA3DIR
PA2DIR
PA1DIR
PA0DIR
PADIR (02CH)
(R/W)
bit 3
bit 2
bit 1
bit 0
Port A input/output setting
0: Input (initial value)
1: Output
Содержание ML63611
Страница 9: ...Chapter 1 Overview...
Страница 33: ...Chapter 2 CPU and Memory Spaces...
Страница 42: ...Chapter 3 CPU Control Functions...
Страница 49: ...Chapter 4 Interrupt INT...
Страница 62: ...Chapter 5 Clock Generator Circuit OSC...
Страница 71: ...Chapter 6 Time Base Counter TBC...
Страница 75: ...Chapter 7 Timers TIMER...
Страница 99: ...Chapter 8 100 Hz Timer Counter 100HzTC...
Страница 103: ...Chapter 9 Watchdog Timer WDT...
Страница 108: ...Chapter 10 Ports INPUT I O PORT...
Страница 140: ...Chapter 11 Melody Driver MELODY...
Страница 152: ...Chapter 12 Serial Port SIO...
Страница 179: ...Chapter 13 LCD Driver LCD...
Страница 200: ...Chapter 14 Battery Low Detect Circuit BLD...
Страница 204: ...Chapter 15 Power Supply Circuit POWER...
Страница 215: ...Chapter 16 A D Converter ADC...
Страница 238: ...Appendixes...
Страница 271: ...ML63611 User s Manual First Edition May 2001 Second Edition June 2001 2001 Oki Electric Industry Co Ltd PEUL63611 02...