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AS8228BLQS

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

Pin No.

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Pin Name

AS8218

IO1

IO2

IO3

VDDD

VSSD

IO4

IO5

IO6

IO7

IO8

SI

VSSD

VDDD

S_N

SO

SC

n.c.

n.c.

n.c.

TXD

RXD

VDD_BAT

XIN

Pin Name

AS8228

IO1

IO2

IO3

VDDD

VSSD

IO4

IO5

IO6

IO7

IO8

SI

VSSD

VDDD

S_N

SO

SC

IO9

IO10

IO11

TXD

RXD

VDD_BAT

XIN

Type Description

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

S Positive digital supply. VDDD provides the positive supply voltage to the

digital circuitry and is internally connected to pin 22. The required supply

voltage is 3.3V ±10%.

S Negative digital supply. VSSD is the ground reference for the digital

circuitry.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIPD Serial peripheral interface (SPI) for external EEPROM: Serial data input.

SI is a digital input with an on-chip pull-down resistor.

S Negative digital supply. VSSD is the ground reference for the digital

circuitry.

S Positive digital supply. VDDD provides the positive supply voltage to the

digital circuitry and is internally connected to pin 13. The required supply

voltage is 3.3V ±10%.

DO Serial peripheral interface (SPI) for external EEPROM: Chip select

(active low).

DO Serial peripheral interface (SPI) for external EEPROM: Serial data

output

DO Serial peripheral interface (SPI) for external EEPROM: Serial clock

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DIO Programmable multi-purpose input/output, with selectable pull-up or

pull-down resistors and selectable drive strength.

DO Universal Asynchronous Receiver/Transmitter (UART1) serial transmit

data output.

DIPU Universal Asynchronous Receiver/Transmitter (UART1) serial receive

data input. RXD is a digital input with an on-chip pull-up resistor.

S Battery backup supply voltage input for the system timing and real time

clock (RTC).

AI A 3.0 to 4.0MHz crystal may be connected across XIN and XOUT

without the requirement for external load capacitors. Alternatively, an

external clock signal may be applied to XIN.

Revision 3.0, 31-May-06

Page 5 of 123

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