M38C88EE-FP Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M38C88EE-FP Datasheet PDF : 51 Pages
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MITSUBISHI MICROCOMPUTERS
38C8 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Common Pin and Duty Ratio Control
The common pins (COM0–COM31) to be used are determined by
duty ratio.
Select duty ratio by the duty ratio selection bit (bit 0 of the LCD mode
register).
Table 9 Duty ratio control and common pins used
Duty
Duty ratio
ratio
selection bit
Common pins used
16
0
COM0–COM15 (Note)
32
1
COM0–COM31
Note: The SEG0/COM16–SEG7/COM23 pins are used as the SEG0–SEG7.
The SEG67/COM24–SEG60/COM31 pins are used as the SEG67–SEG60.
LCD Display RAM
Addresses 004016 to 012F16 is the designated RAM for the LCD
display. When “1” are written to these addresses, the corresponding
segments of the LCD display panel are turned on.
LCD Drive Timing
The LCDCK timing frequency (LCD drive timing) is generated inter-
nally and the frame frequency can be determined with the following
equation;
(frequency of count source for LCDCK)
f(LCDCK) =
(divider division ratio for LCD)
f(LCDCK)
Frame frequency = (duty ratio)
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
000000001000101110111110
000000001101100100001000
000000001010100100001000
000000001000100100001000
000000001000100100001000
000000001000100100001000
000000001000101110001000
000000000000000000000000
010001011111001110001110
011011000010010001010001
010101000100010001010000
010001000010001110010000
010001000001010001010000
010001010001010001010001
010001001110001110001110
000000000000000000000000
0 0 1 1 1 0 0 1 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 LSB
01 0 0 0 10 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0
01 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0
00 1 1 1 0 0 1 1 1 1 1 0 0 1 0 0 0 0 0 0 0 0 0
00 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0
01 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0
00 1 1 1 0 0 1 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MSB
1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 0 0 LSB
10 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0
10 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0
11 1 1 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 1 1 0 0
10 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0
10 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0
11 1 1 1 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MSB
COM16
COM17
COM18
COM19
COM20
COM21
COM22
COM23
COM24
COM25
COM26
COM27
COM28
COM29
COM30
COM31
0010001011111001
0011011000010010
0010101000100010
0010001000010001
0010001000001010
0010001010001010
0010001001110001
0000000000000000
0000000000100010
0000000000100010
0000000000010100
0000001110001000
0000000000010100
0000000000100010
0000000000100010
0000000000000000
1 0 0 1 0 0 0 1 0 1 1 1 1 1 0 0 LSB
01 0 1 1 0 1 1 0 1 0 0 0 0 0 0
01 0 1 0 1 0 1 0 1 0 0 0 0 0 0
11 0 1 0 0 0 1 0 1 1 1 1 0 0 0
01 0 1 0 0 0 1 0 1 0 0 0 0 0 0
01 0 1 0 0 0 1 0 1 0 0 0 0 0 0
10 0 1 0 0 0 1 0 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MSB
1 1 1 1 1 0 1 1 1 1 0 0 0 0 0 0 LSB
10 0 0 0 0 1 0 0 0 1 0 0 0 0 0
10 0 0 0 0 1 0 0 0 1 0 0 0 0 0
11 1 1 0 0 1 1 1 1 0 0 0 0 0 0
10 0 0 0 0 1 0 0 0 0 0 0 0 0 0
10 0 0 0 0 1 0 0 0 0 0 0 0 0 0
10 0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MSB
LCD display map
When selecting 3 page
When selecting 0 page
Fig. 30 LCD display RAM map
32
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