ADuC812–SPECIFICATIONS1, 2

(continued)

 

 

 

ADuC812BS

 

 

Parameter

VDD = 5 V

VDD = 3 V

Unit

Test Conditions/Comments

DAC AC CHARACTERISTICS

 

 

∝s typ

 

Voltage Output Settling Time

15

15

Full-Scale Settling Time to

 

 

 

 

Within 1/2 LSB of Final Value

Digital-to-Analog Glitch Energy

10

10

nV sec typ

1 LSB Change at Major Carry

 

 

 

 

 

REFERENCE INPUT/OUTPUT

 

 

 

 

REFIN Input Voltage Range9

2.3/VDD

2.3/VDD

V min/max

 

Input Impedance

150

150

kΩ typ

 

REFOUT Output Voltage

2.5 ± 2.5%

 

V min/max

Initial Tolerance @ 25°C

 

2.5

2.5

V typ

 

REFOUT Tempco

100

100

ppm/°C typ

 

FLASH/EE MEMORY PERFORMANCE

 

 

 

 

CHARACTERISTICS12, 13

 

 

 

 

Endurance

10,000

 

Cycles min

 

 

50,000

50,000

Cycles typ

 

Data Retention

10

 

Years min

 

 

 

 

 

 

WATCHDOG TIMER

 

 

 

 

CHARACTERISTICS

 

 

 

 

Oscillator Frequency

64

64

kHz typ

 

 

 

 

 

 

POWER SUPPLY MONITOR

 

 

 

 

CHARACTERISTICS

± 2.5

 

 

 

Power Supply Trip Point Accuracy

 

% of Selected

 

 

 

 

Nominal Trip

 

 

 

 

Point Voltage

 

 

± 1.0

± 1.0

max

 

 

% of Selected

 

 

 

 

Nominal Trip

 

 

 

 

Point Voltage

 

 

 

 

typ

 

 

 

 

 

 

DIGITAL INPUTS

 

 

 

 

Input High Voltage (VINH)

2.4

 

V min

 

XTAL1 Input High Voltage (VINH) Only

4

 

V min

 

Input Low Voltage (VINL)

0.8

 

V max

 

Input Leakage Current (Port 0, EA)

± 10

 

∝A max

VIN = 0 V or VDD

Logic 1 Input Current

± 1

± 1

∝A typ

VIN = 0 V or VDD

± 10

 

∝A max

 

(All Digital Inputs)

 

VIN = VDD

 

± 1

± 1

∝A typ

VIN = VDD

Logic 0 Input Current (Port 1, 2, 3)

–80

 

∝A max

 

 

–40

–40

∝A typ

VIL = 450 mV

Logic 1-0 Transition Current (Port 1, 2, 3)

–700

 

∝A max

VIL = 2 V

 

–400

–400

∝A typ

VIL = 2 V

Input Capacitance

10

10

pF typ

 

 

 

 

 

 

–4–

REV. B

Page 4
Image 4
Analog Devices ADuC812 manual DAC AC Characteristics, Reference INPUT/OUTPUT, FLASH/EE Memory Performance CHARACTERISTICS12