参数资料
型号: MC68HC05L16FU
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封装: PLASTIC, QFP-80
文件页数: 4/146页
文件大小: 852K
代理商: MC68HC05L16FU
LCD Data Register
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
Freescale Semiconductor
101
10.6 LCD Data Register
LCDRx — LCD Data Registers
Data in the LCDRx (LCDR1–LCDR20) controls the waveform of the two frontplane drivers. Bits 0–3
and bits 4–7 of this register decide the waveforms at the BP0–BP3 timings. If the LCD duty is not 1/4,
the register bit for the unused backplane has no meaning. The upper four bits of LCDR20 are not
implemented and unknown data may be read. (See Table 10-3.)
0 = Output deselect waveform at the corresponding backplane timing
1 = Output select waveform at the corresponding backplane timing
Address:
$0021–$0034
FP (2x–1)
FP (2x–2)
Bit 7
654321
Bit 0
Read:
BP3
BP2
BP1
BP0
BP3
BP2
BP1
BP0
Write:
Reset:
Unaffected by reset
Figure 10-6. LDC Data Registers
Table 10-3. Frontplane Data Register Bit Usage
Duty
Frontplane Data Register Bit Usage
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1 / 1
———
BP0
BP0
1 / 2
BP1
BP0
BP1
BP0
1 / 3
BP2
BP1
BP0
BP2
BP1
BP0
1 / 4
BP3
BP2
BP1
BP0
BP3
BP2
BP1
BP0
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