ML63611 User’s Manual
Chapter 13 LCD Driver (LCD)
13 – 11
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
13.5
Output Port Selection by Mask Option
The four pins L32 to L35 of the LCD driver can be selected by mask option setting to form an output port in 4-bit
unit.
When these pins are specified as an output port, one bit of the segment register will be allocated to one pin of the
port.
Figure 13-7 shows an example of the equivalent circuit when the pins L32 to L35 are allocated collectively as an
output port. In this case, the output voltage level will be V
DD
for the “H” level output and V
SS
for the “L” level
output.
The output mode can be selected to be either N-channel open drain output or CMOS output using the register
LP0CON.
4
3
2
1
0
Segment
register
Read/Write
Data bus
Inside the IC
V
DD
L32/LP0.3
L33/LP0.2
L34/LP0.1
L35/LP0.0
Figure 13-7
Equivalent Circuit When the LCD Driver Pins L32 to L35 Are Assigned as Output
Port Pins
For details of the method of assigning the bits of the segment register for the output pins, and of specifying the
output port, refer to the “MOGTOOL Mask Option Generator User’s Manual”.
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...