STPM11 datasheet(9/43 Pages) STMICROELECTRONICS

9 / 43 page

STPM11/12/13/14

Electrical characteristics

9/43

Crystal oscillator (STPM12/14)

Input current on CLKIN

±1

µA

External resistor

Ω

External capacitors

fCLK

Nominal output frequency

4.194

MHz

8.192

RC Oscillator (STPM11/13)

ICLKIN

Settling current

fCLK= 4 MHz

µA

RSET

Settling resistor

Ω

tJIT

Frequency jitter

On chip reference voltage

VREF

Reference voltage

1.23

Reference accuracy

±1

Temperature coefficient

After calibration

ppm/°

Configuration interface timing

FSCLKw Data write speed

100

KHz

tDS

Data setup time

tDH

Data hold time

tSYN

SYN-NP active width

2/fCLK

Table 4.

Electrical characteristics

(VCC =5V, TA= 25°C, 2.2µF between VDDA and VSS, 2.2µF between VDDD and VSS, 2.2µF

between VCC and VSS unless otherwise specified)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Table 5.

Typical external components

Function

Component

Parameter

Value

Tolerance

Unit

Line voltage

interface

Resistor divider

R to R ratio VRMS=230V

1650

±1%

V/V

R to R ratio VRMS=110V

830

±1%

Line current

interface

Current shunt

Current to voltage conversion ratio

0.2

±5%

mV/A

Current transformer

±12%

Rogowsky coil

±12%

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