ML63611 User’s Manual
Chapter 1 Overview
1 – 20
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
1.7.3 Handling of Unused Pins
Table 1-5 shows how unused pins should be handled.
Table 1-5 Handling of Unused Pins
Pin
Recommended pin handling
OSC0, OSC1
Open
V
HF
, HC1, HC2
Open
TST1, TST2
Connect to V
SS
P0.0 to P0.3
Open
PA.0 to PA.3
Open
PB.0 to PB.3
Open
PC.0 to PC.3
Open
PE.0 to PE.3
Open
L0 to L63
Open
MD, MDB
Open
RT0, CRT0, RS0, CS0
Open
IN0, IN1
Open
CS1, RS1, RT1
Open
Notes:
1.
If a pin set as a high impedance input is left unconnected, the supply current may become excessive. Therefore,
it is recommended that unused input ports and input/output ports be set as inputs with either a pull-down or
pull-up resistor.
2.
When test pins TST1 and TST2 are left unconnected, malfunction may result if there is a large amount of
external noise. Therefore, it is recommended to permanently connect TST1 and TST2 to V
SS
.
!
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...