SA9122EFA Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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SA9122EFA

SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER

South African Micro Electronic Systems 

SA9122E

ELECTRICAL CHARACTERISTICS (Continued)

Parameter

Symbol Min Typ Max Unit Condition

Oscillator

Recommended crystal:

TV colour burst crystal f = 3.5795 MHz

Pin VREF

Ref. Current

Ref. Voltage

LCD backplane Voltage

LCD segment Voltage

With R = 24kΩ

-I

45 50 55 µA connected to V

R

SS

VR

1.1

1.3

V Referred to VSS

VB

VDD &

V

V R[0] ... R[3]

SS

Vs

1/3 VDD

2/3 VDD

V

S[0] ... S[15]

Note1: Two additional bondout options at FOUT2 are available on request: fp/4 and

fp/16.

# Extended Operating Temperature Range available on request.

PIN DESCRIPTION

PLCC-44

11

18

3

8

10

9

42

41

14

15

16

17

4

5

6

7

13

2

44

43

DIP-40

10

16

2

7

9

8

38

37

12

13

14

15

3

4

5

6

11

1

40

39

Designation

GND

VDD

VSS

IVN

IIN

IIP

OSC1

OSC2

CPON

CPOP

CPIN

CPIP

CIP

CIN

COP

CON

VREF

RX

FOUT2

FOUT1

Description

Ground

Positive Supply Voltage

Negative Supply Voltage

Analog input for Voltage

Inputs for current sensor

Connections for crystal or ceramic resonator

(OSC1 = Input ; OSC2 = Output)

Connections for outer loop capacitor of

A/D converter (Voltage)

Connections for inner loop capacitor of

A/D converter (Voltage)

Connections for inner loop capacitor of

A/D converter (Current)

Connections for outer loop capacitor of

A/D converter (Current)

Connection for current setting resistor

Serial data input

Pulse rate outputs

4/12

sames

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