参数资料
型号: ST62E85BG1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CQFP80
封装: CERAMIC, QFP-80
文件页数: 55/78页
文件大小: 868K
代理商: ST62E85BG1
Obsolete
Product(s)
- Obsolete
Product(s)
59/78
ST62T85B/E85B
LCD CONTROLLER-DRIVER (Cont”d)
4.7.3 Stand by or STOP operation mode
No clock from the main oscillator is available in
STOP mode for the LCD controller, and the con-
troller is switched off when the STOP instruction is
executed. All segment and common lines are then
switched to ground to avoid any DC biasing of the
LCD elements.
4.7.4 LCD Mode Control Register (LCDCR)
Address: DCh - Read/Write
Bits 7-6 = MUX16, MUX11.
Multiplexing ratio se-
lect bits. These bits select the number of common
backplanes used by the LCD control.
Bits 5-3 = HF0, HF1, HF2.
Oscillator select bits.
These bits allow the LCD controller to be supplied
with the correct frequency when different high
main oscillator frequencies are selected as system
clock. Table 20 shows the set-up for different clock
crystals.
Bits 2 = Reserved.
Bits 1-0 = LF0, LF1.
Base frame frequency select
bits. These bits control the LCD base operational
frequency of the LCD common lines.
LF0, LF1 define the 32KHz division factor as
shown in Table 23.
Table 23. 32KHz Division Factor for Base
Frequency Selection
70
MUX16
MUX11
HF2
HF1
HF0
-
LF1
LF0
LF1
LF0
32KHz Division Factor
0
512
0
1
386
1
0
256
1
192
0
128
59
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