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REV. 0
ADuC831
–5–
Parameter
VDD = 5 V
VDD = 3 V
Unit
Test Conditions/Comments
SCLOCK and RESET Only
4
(Schmitt-Triggered Inputs)
VT+
1.3
0.95
V min
3.0
2.5
V max
VT–
0.8
0.4
V min
1.4
1.1
V max
VT+ – VT–
0.3
V min
0.85
V max
CRYSTAL OSCILLATOR
Logic Inputs, XTAL1 Only
VINL, Input Low Voltage
0.8
0.4
V typ
VINH, Input High Voltage
3.5
2.5
V typ
XTAL1 Input Capacitance
18
pF typ
XTAL2 Output Capacitance
18
pF typ
MCU CLOCK RATE
16
MHz max
DIGITAL OUTPUTS
Output High Voltage (VOH)
2.4
V min
VDD = 4.5 V to 5.5 V
4.0
V typ
ISOURCE = 80
A
2.4
V min
VDD = 2.7 V to 3.3 V
2.6
V typ
ISOURCE = 20
A
Output Low Voltage (VOL)
ALE, Ports 0 and 2
0.4
V max
ISINK = 1.6 mA
0.2
V typ
ISINK = 1.6 mA
Port 3
0.4
V max
ISINK = 4 mA
SCLOCK/SDATA
0.4
V max
ISINK = 8 mA, I
2C Enabled
Floating State Leakage Current
4
±10
A max
±1
A typ
Floating State Output Capacitance
10
pF typ
START UP TIME
MCLKIN = 16 MHz
At Power-On
500
ms typ
From Idle Mode
100
s typ
From Power-Down Mode
Wakeup with
INT0 Interrupt
150
400
s typ
Wakeup with SPI/I
2C Interrupt
150
400
s typ
Wakeup with External RESET
150
400
s typ
After External RESET in Normal Mode
30
ms typ
After WDT Reset in Normal Mode
3
ms typ
Controlled via WDCON SFR