参数资料
型号: MC68HC705CL16
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 1.802 MHz, MICROCONTROLLER, PQFP100
封装: TQFP-100
文件页数: 6/145页
文件大小: 673K
代理商: MC68HC705CL16
June 11, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05CL48
LCD DRIVER
MOTOROLA
REV 2.0
12-7
12.3
LCD VOLTAGE GENERATION
Figure 12-4 shows the resistive divider chain network that is used to produce the
various LCD waveforms outlined in the previous section. The LCD system can be
disabled by setting the DISON bit to 0. The voltage levels of the LCD driver
waveforms and hence the contrast of the LCD can be altered by selecting
appropriate resistors by setting the corresponding values to the CC0 to CC3 bits
in the LCDCTR register.
Figure 12-4. Voltage Generator
V4
V3
DISON
RL4
RL3
RL2
VLCD
V1
V5
CC1
CC2
CC3
RC1
RC2
RC3
V2
RL5
RL1
V0
External Caps
BIAS5
CC0
RC0
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