参数资料
型号: 71M6513H-DB
厂商: Maxim Integrated Products
文件页数: 57/112页
文件大小: 0K
描述: BOARD DEMO 71M6513H ENERGY METER
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6513H
已供物品: 2 个板,线缆,CD,电源
71M6513/71M6513H Demo Board User’s Manual
2.4.5 LCD
The 71M6513 has an on-chip LCD controller capable of controlling static or multiplexed LCDs. Figure 2-11
shows the basic connection for LCDs. Note that the LCD module itself has no power connection.
651X
LCD
segments
commons
Figure 2-11: LCD Connections
Figure 2-12 shows how 5V LCDs can be operated even when a 5V supply is not available. Setting the I/O RAM
register LCD_BSTEN to 1 starts the on-chip boost circuitry that will output an AC frequency on the VDRV pin.
Using a small coupling capacitor, two general-purpose diodes and a reservoir capacitor, a 5VDC voltage is
generated which can be fed back into the VLCD pin of the 71M6513. The LCD drivers are enabled with the I/O
register LCD_ON ; I/O register LCD_FS is used to adjust contrast, and LCD_MODE selects the operation mode
(LCD type).
V3P3
LCD_BSTEN
V3P3
651X
VDRV
5VDC
VLCD
5V LCD
Contrast
LCD_FS
LCD_EN
ON/OFF
LCD type LCD_MODE
segments
commons
Figure 2-12: LCD Boost and LCD Control Registers
Page: 57 of 112
? 2005-2006 TERIDIAN Semiconductor Corporation
Revision 5.6
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