ST62T42B datasheet(60/68 Pages) STMICROELECTRONICS

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ST62T42B/E42B

7.4 AC ELECTRICAL CHARACTERISTICS

(TA = -40 to +85°C unless otherwise specified)

Notes:

1. Period for which VDD has to be connected at 0V to allow internal Reset function at next power-up.

7.5 A/D CONVERTER CHARACTERISTICS

(TA = -40 to +85°C unless otherwise specified)

Notes:

1. Noise at AVDD,AVSS <10mV

2. With oscillator frequencies less than 1MHz, the A/D Converter accuracy is decreased. .

Symbol

Parameter

Test Conditio ns

Value

Unit

Min.

Typ.

Max.

tREC

Supply Recovery Time (1)

100

TWR

Minimum Pulse Width (VDD = 5V)

RESET pin

NMI pin

100

TWEE

EEPROM Write Time

TA =25°C

TA =85°C

Endurance EEPROM WRITE/ERASE Cycle

QA LOT Acceptance

300,000 1 million

cycles

Retention

EEPROM Data Retention

TA =55°C

years

CIN

Input Capacitance

All Inputs Pins

COUT

Output Capacitance

All Outputs Pins

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

Res

Resolution

Bit

ATOT

Total Accuracy (1) (2)

fOSC > 1.2MHz

fOSC > 32kHz

±2

±4

LSB

Conversion Time

fOSC = 8MHz

µs

ZIR

Zero Input Reading

Conversion result when

VIN =VSS

Hex

FSR

Full Scale Reading

Conversion result when

VIN =VDD

Hex

ADI

Analog Input Current During

Conversion

VDD= 4.5V

1.0

µA

ACIN

Analog Input Capacitance

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