AS8218BLQW Ver la hoja de datos (PDF) - austriamicrosystems AG

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Fabricante

AS8218BLQW

Highly Integrated Single Phase 2-Current Energy Metering Integrated Circuits with Microcontroller, RTC, Programmable Multi-Purpose I/Os and LCD Driver

austriamicrosystems AG 

Data Sheet AS8218 / AS8228

3. Typical Application Circuit

LOAD

3.3V

3.3V

3.3V

+

+

LCD

XIN XOUT

32 33

VDDA

7

VDD_BAT 31

Low

Power

Oscillator

Low

Power

Divider

RTC

System Timing & RTC

I1P 3

I1N 4

I2N 6

I2P 5

VP 1

VN 2

Analog Front End

SDM

SDM

DSP

SDM

RES_N 34

WDT

System

Control

UART1

29

30

TXD RXD

VI VO

GND

+

3.3V

VDDD

13 22

MCU

8

VSSA

14

VSSD

37 38 39 40

LCD

Driver

Multi-

purpose

I/Os

SPI

21

VSSD

41 LSD0

42 LSD1

43 LSD2

44 LSD3

45 LSD4

46 LSD5

47 LSD6

48 LSD7

49 LSD8

50 LSD9

51 LSD10

52 LSD11

53 LSD12

54 LSD13

55 LSD14

56 LSD15

57 LSD16

58 LSD17

59 LSD18

60 LSD19

61 LSD20

62 LSD21

63 LSD22

64 LSD23

9 IO0

10 IO1

11 IO2

12 IO3

15 IO4

16 IO5

17 IO6

18 IO7

19 IO8

26 IO9

27 IO10

28 IO11

AS8228 only

23 S_N

20 SI

24 SO

25 SC

S1

Q2

3.3V W 3

VSS 4

kWh

Vrms

Irms

LED

DIRO

FAULT

I/Os

Examples

only

Push-Button

Reference pulses

for calibration

8 VCC 3.3V

7 HOLD 3.3V

6C

5D

N

L

Figure 1: Typical application circuit of the AS8218 / AS8228

Revision 3.0, 31-May-06

Page 3 of 123

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