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參數(shù)資料
| 型號(hào)： | MC68HC05L1FU |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁(yè)數(shù)： | 55/102頁(yè) |
| 文件大?。?/td> | 632K |
| 代理商： | MC68HC05L1FU |
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MOTOROLA
7-2
MC68HC05L1
LIQUID CRYSTAL DISPLAY DRIVER
7
7.1
LCD Display RAM
Data to be displayed on the LCD must be written into the LCD RAM. The LCD RAM consists of 16
bytes of RAM at $0200-$020F. The 64 bits in the LCD RAM correspond to the 64 segments that
can be driven by the frontplane/backplane drivers. Table 7-1 shows how the LCD RAM is
organized. Writing a “1” to a given location will result in the corresponding display segment being
activated when the DON bit is set. The LCD RAM is a dual port RAM that interfaces with the
internal address and data buses of the MCU. It is possible to read from LCD RAM locations for
scrolling purposes. When DON=0, the LCD RAM can be used as main on-chip memory.
7.2
LCD Operation
The LCD driver module can operate in four modes as follows:
3x12 segment drive
3x16 segment drive
4x12 segment drive
4x16 segment drive
Table 7-1 LCD RAM Organization
LCD RAM
Address
Data
76543210
$0200
FP0-BP0
FP0-BP1
FP0-BP2
$0201
FP1-BP0
FP1-BP1
FP1-BP2
FP1-BP3
$0202
FP2-BP0
FP2-BP1
FP2-BP2
FP2-BP3
$0203
FP3-BP0
FP3-BP1
FP3-BP2
FP3-BP3
$0204
FP4-BP0
FP4-BP1
FP4-BP2
FP4-BP3
$0205
FP5-BP0
FP5-BP1
FP5-BP2
FP5-BP3
$0206
FP6-BP0
FP6-BP1
FP6-BP2
FP6-BP3
$0207
FP7-BP0
FP7-BP1
FP7-BP2
FP7-BP3
$0208
FP8-BP0
FP8-BP1
FP8-BP2
FP8-BP3
$0209
FP9-BP0
FP9-BP1
FP9-BP2
FP9-BP3
$020A
FP10-BP0 FP10-BP1 FP10-BP2 FP10-BP3
$020B
FP11-BP0 FP11-BP1 FP11-BP2 FP11-BP3
$020C
FP12-BP0 FP12-BP1 FP12-BP2 FP12-BP3
$020D
FP13-BP0 FP13-BP1 FP13-BP2 FP13-BP3
$020E
FP14-BP0 FP14-BP1 FP14-BP2 F14P-BP3
$020F
FP15-BP0 F15P-BP1 FP15-BP2 FP15-BP3
TPG
54
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