REV. B
–4–
ADuC812–SPECIFICATIONS

1, 2

ADuC812BS
Parameter V
DD
= 5 V V
DD
= 3 V Unit Test Conditions/Comments
DAC AC CHARACTERISTICS
Voltage Output Settling Time 15 15 µs typ 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
REF
IN
Input Voltage Range
9
2.3/V
DD
2.3/V
DD
V min/max
Input Impedance 150 150 kΩ typ
REF
OUT
Output Voltage 2.5 ±2.5% V min/max Initial Tolerance @ 25°C
2.5 2.5 V typ
REF
OUT
Tempco 100 100 ppm/°C typ
FLASH/EE MEMORY PERFORMANCE
CHARACTERISTICS
12, 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
Power Supply Trip Point Accuracy ±2.5 % of Selected
Nominal Trip
Point Voltage
max
±1.0 ±1.0 % of Selected
Nominal Trip
Point Voltage
typ
DIGITAL INPUTS
Input High Voltage (V
INH
) 2.4 V min
XTAL1 Input High Voltage (V
INH
) Only 4 V min
Input Low Voltage (V
INL
) 0.8 V max
Input Leakage Current (Port 0, EA) ±10 µA max V
IN
= 0 V or V
DD
±1±1µA typ V
IN
= 0 V or V
DD
Logic 1 Input Current
(All Digital Inputs) ±10 µA max V
IN
= V
DD
±1±1µA typ V
IN
= V
DD
Logic 0 Input Current (Port 1, 2, 3) –80 µA max
–40 –40 µA typ V
IL
= 450 mV
Logic 1-0 Transition Current (Port 1, 2, 3) –700 µA max V
IL
= 2 V
–400 –400 µA typ V
IL
= 2 V
Input Capacitance 10 10 pF typ

(continued)