ade7518 Analog Devices, Inc., ade7518 Datasheet - Page 4

• Manufacturer Part Number: ade7518
• Description: Single-phase Energy Measurement Ic With 8052 Mcu, Rtc, And Lcd Driver
• Manufacturer: Analog Devices, Inc.

ADE7518
GENERAL DESCRIPTION
The ADE7518
(ADE) metering IC analog front end and fixed function DSP
solution with an enhanced 8052 MCU core, an RTC, an LCD
driver, and all the peripherals to make an electronic energy
meter with an LCD display in a single part.
The ADE measurement core includes active, reactive, and apparent
energy calculations, as well as voltage and current rms measure-
ments. This information is ready to use for energy billing by using
built-in energy scalars. Many power line supervisory features,
such as SAG, peak, and zero crossing, are included in the energy
measurement DSP to simplify energy meter design.
1
Patents pending.
DGND
AGND
V
BAT
V
V
I
I
P
N
P
N
1
integrates the Analog Devices, Inc., energy
52
53
49
50
63
54
58
PGA1
PGA2
+
–
+
–
1.20V
REF
POWER SUPPLY
64
CONTROL AND
MONITORING
ADC
ADC
57
60
43 42
MEASUREMENT
ENERGY
61
DSP
PROGRAM MEMORY
INTERFACE
38 39 40 41
16kB FLASH
SERIAL
SPI/I
LDO
FUNCTIONAL BLOCK DIAGRAM
62
USER XRAM
USER RAM
256 BYTES
256 BYTES
2
C
LDO
59
39 38 7
COUNTER
3 × 16-BIT
TIMERS
POR
Rev. 0 | Page 4 of 128
56
6
Figure 1.
SINGLE
CYCLE
8052
MCU
51
45 11 43 42 41 40 39 38
The microprocessor functionality includes a single-cycle 8052 core,
a real-time clock with a power supply backup pin, a UART, and an
SPI or I
ADE core reduces the program memory size requirement, making
it easy to integrate complicated design into 16 kB of flash
memory.
The ADE7518 also includes a 108-segment LCD driver. This
driver generates waveforms capable of driving LCDs up to 3.3 V.
TIMER
UART
44
DOWNLOADER
DEBUGGER
WATCHDOG
2
C® interface. The ready-to-use information from the
TIMER
36
SERIAL
UART
PORT
37
37 36 5
RTC
108-SEGMENT
LCD DRIVER
ADE7518
LEVELS
LCD
6
47
OSC
PLL
7
8
46
9 10
48
45
14
12
13
14
44
19
16
18
17
15
35
20
13
12
11
10
55
6
4
1
9
8
7
5
P2.0 (FP18)
P2.1 (FP17)
P2.2 (FP16)
P2.3 (SDEN)
...
COM3
FP0
...
FP15
LCDVP1
LCDVP2
LCDVA
LCDVB
LCDVC
COM0
FP16
FP17
FP18
FP19
FP20
FP21
FP22
FP23
FP24
FP25
FP26