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参数资料
| 型号： | ADE7518ASTZF16 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 86/128页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER MCU 16K 64LQFP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 特色产品： | ADE7518: Single-phase Energy-Measurement IC |
| 标准包装： | 160 |
| 输入阻抗： | * |
| 测量误差： | * |
| 电压 - 高输入/输出： | * |
| 电压 - 低输入/输出： | * |
| 电流 - 电源： | * |
| 电源电压： | * |
| 测量仪表类型： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
| 产品目录页面： | 797 (CN2011-ZH PDF) |
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ADE7518
LCD EXTERNAL CIRCUITRY
The voltage generation selection is made by setting Bit EXTRES
in the LCD Configuration X SFR (LCDCONX, 0x9C). This bit
Example LCD Setup
An example of how to set up the LCD peripheral for a specific
LCD is described in this section with the following parameters:
is cleared by default and needs to be set to enable an external
resistor ladder.
?
?
Type of LCD: 4× multiplexed with 1/3 bias, 96 segments
Refresh rate: 64 Hz
External Resistor Ladder
To enable the external resistor ladder, set the EXTRES bit in
the LCD Configuration X SFR (LCDCONX, 0x9C). When
EXTRES = 1, the LCD waveform voltages are supplied by the
external resistor ladder. Because the LCD voltages are not
generated on chip, the LCD bias compensation implemented to
maintain contrast over temperature and supply is not possible.
The external circuitry needed for the resistor ladder option is
shown in Figure 77. The resistors required should be in the
range of 10 kΩ to 100 kΩ and based on the current required
by the LCD being used.
LCDVC
A 96-segment LCD with 4× multiplexing requires 96/4 = 24
segment lines. Sixteen pins, FP0 to FP15, are automatically
dedicated for use as LCD segments. Eight more pins must be
chosen for the LCD function. Because the LCD has 4× multi-
plexing, all four common lines are used. As a result, COM2/FP28
and COM3/FP27 cannot be used as segment lines. Based on the
alternate functions of the pins used for FP16 through FP25,
FP16 to FP23 are chosen for the eight remaining segment lines.
These pins are enabled for LCD functionality in the LCD
Segment Enable SFR (LCDSEGE, 0x97) and LCD Segment
Enable 2 SFR (LCDSEGE2, 0xED).
The LCD is set up with the following 8052 code:
LCD WAVEFORM
CIRCUITRY
LCDVB
LCDVA
; setup LCD pins to have LCD functionality
MOV LCDSEG,#FP20EN+FP21EN+FP22EN+FP23EN
LCDVP1
LCDVP2
MOV
LCDSEGX,#FP16EN+FP17EN+FP18EN+FP19EN
Figure 76. External Circuitry for External Resistor Ladder Option 1/2 Bias
Configuration
; set up LCDCON for f LCDCLK = 2048 Hz, 1/3
bias and 4× multiplexing
MOV
LCDCON,#BIAS+LMUX1+LMUX0
; set up LCDCONX for resistor ladder
LCDVC
MOV
LCDCONX,#40h
LCD WAVEFORM
CIRCUITRY
LCDVB
LCDVA
; set up refresh rate for 64 Hz with f LCDCLK =
2048 Hz
LCDVP1
MOV
LCDCLK,#FD3+FD2+FD1+FD0
LCDVP2
Figure 77. External Circuitry for External Resistor Ladder Option1/3 Bias
Configuration
LCD FUNCTION IN PSM2
The LCDPSM2 and LCDEN bits in the LCD Configuration SFR
(LCDCON, 0x95) control LCD functionality in PSM2 operating
; set up LCD data registers with data to be
displayed using
; LCDPTR and LCDDATA registers
; turn all segments on FP27 on and FP26 off
ORL LCDCONY,#01h ; start data memory
refresh
mode (see Table 79).
Table 79. Bits Controlling LCD Functionality in PSM2 Mode
MOV
MOV
LCDDAT,#F0H
LCDPTR, #80h OR 0DH
LCDPSM2
0
LCDEN
0
Result
The display is off in PSM2.
ANL LCDCONY,#0FEh ; end of data memory
refresh
0
1
1
X
The display is on in PSM2.
The display is off in PSM2.
ORL
LCDCON,#LCDEN ; enable LCD
In addition, note that the LCD configuration and data memory
is retained when the display is turned off.
To set up the same 3.3 V LCD for use with an external resistor
ladder,
; set up LCDCONX for external resistor
ladder
MOV
Rev. 0 | Page 86 of 128
LCDCONX,#EXTRES
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7518ASTZF16-RL | 功能描述:IC ENERGY METER MCU 16K 64LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7518ASTZF8 | 功能描述:IC ENERGY METER MCU 8K 64LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7518ASTZF8-RL | 功能描述:IC ENERGY METER MCU 8K 64LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7566 | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver |
| ADE7566ACPZF16 | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver |
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