ADE7166ASTZF8 Analog Devices Inc, ADE7166ASTZF8 Datasheet - Page 102

• Manufacturer Part Number: ADE7166ASTZF8
• Description: IC ENERGY METER 1PHASE 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE7166ASTZF8

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (8 kB)
• Controller Series: ADE71xx
• Ram Size: 512 x 8
• Interface: I²C, SPI, UART
• Number Of I /o: 20
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 3.13V To 3.46V, 2.4V To 3.7V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADE7566/ADE7569/ADE7166/ADE7169
Table 90. Bits Controlling LCD Functionality in PSM2 Mode
LCDPSM2
0
0
1
In addition, note that the LCD configuration and data memory
is retained when the display is turned off.
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:
•
•
•
The LCD is setup with the following 8052 code:
; setup LCD pins to have LCD functionality
MOV
MOV
; setup LCDCON for f
MOV
; setup LCDCONX for charge pump and BIASLVL[110111]
MOV
; set up refresh rate for 64Hz with f
MOV
; 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
MOV
MOV
ANL
ORL
To setup the same 3.3 V LCD for use with an external resistor ladder:
; setup LCDCONX for external resistor ladder
MOV
Type of LCD: 5 V, 4× multiplexed with 1/3 bias, 96 segment
Voltage generation: internal charge pump
Refresh rate: 64 Hz
LCDSEG,#FP20EN+FP21EN+FP22EN+FP23EN
LCDSEGX,#FP16EN+FP17EN+FP18EN+FP19EN
LCDCON,#BIAS+LMUX1+LMUX0
LCDCONX,#BIASLVL5+BIASLVL4+BIASLVL3+BIASLVL2+BIASLVL1+BIASLVL0
LCDCLK,#FD3+FD2+FD1+FD0
LCDCONY,#01h ; start data memory refresh
LCDDAT,#F0H
LCDCONY,#0FEh ; end of data memory refresh
LCDCON,#LCDEN ; enable LCD
LCDCONX,#EXTRES
LCDEN
0
1
X
LCDPTR, #80h OR 0DH
LCDCLK
Result
The display is off in PSM2.
The display is on in PSM2.
The display is off in PSM2.
=2048Hz, 1/3 bias and 4x multiplexing
LCDCLK
=2048Hz
Rev. A | Page 102 of 144
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).
To determine contrast setting for this 5 V LCD, Table 80 shows
the BIASLVL[5:0] setting that corresponds to a VC of 5 V in
1/3 bias mode. The maximal bias level setting for this LCD is
BIASLVL[5:0] = [101110].