Datasheet

ADuC841/ADuC842/ADuC843
Rev. 0 | Page 4 of 88
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
½ LSB of final value
Digital-to-Analog Glitch Energy 10 10 nV-sec typ 1 LSB change at major carry
DAC CHANNEL SPECIFICATIONS
12, 13
Internal Buffer Disabled ADuC841/ADuC842 Only
DC ACCURACY
10
Resolution 12 12 Bits
Relative Accuracy ±3 ±3 LSB typ
Differential Nonlinearity
11
–1 –1 LSB max Guaranteed 12-bit monotonic
±1/2 ±1/2 LSB typ
Offset Error ±5 ±5 mV max V
REF
range
Gain Error ±0.5 ±0.5 % typ V
REF
range
Gain Error Mismatch
4
0.5 0.5 % typ % of full-scale on DAC1
ANALOG OUTPUTS
Voltage Range_0 0 to V
REF
0 to V
REF
V typ DAC V
REF
= 2.5 V
REFERENCE INPUT/OUTPUT REFERENCE OUTPUT
14
Output Voltage (V
REF
) 2.5 2.5 V
Accuracy ±10 ±10 mV Max
Of V
REF
measured at the C
REF
pin
T
A
= 25°C
Power Supply Rejection 65 67 dB typ
Reference Temperature Coefficient ±15 ±15 ppm/°C typ
Internal V
REF
Power-On Time 2 2 ms typ
EXTERNAL REFERENCE INPUT
15
Voltage Range (V
REF
)
4
1 1 V min
V
DD
V
DD
V max
Input Impedance 20 20 kΩ typ
Input Leakage 1 1 µA max
Internal band gap deselected via
ADCCON1.6
POWER SUPPLY MONITOR (PSM)
DV
DD
Trip Point Selection Range 2.93
3.08
V min
V max
Two trip points selectable in this
range programmed via TPD1–0 in
PSMCON, 3 V part only
DV
DD
Power Supply Trip Point Accuracy ±2.5 % max
WATCHDOG TIMER (WDT)
4
Timeout Period 0
2000
0
2000
ms min
ms max
Nine timeout periods selectable in
this range
FLASH/EE MEMORY RELIABILITY CHARACTERISTICS
16
Endurance
17
100,000 100,000 Cycles min
Data Retention
18
100 100 Years min
DIGITAL INPUTS
Input Leakage Current (Port 0,
EA
)
±10 ±10 µA max V
IN
= 0 V or V
DD
±1 ±1 µA typ V
IN
= 0 V or V
DD
Logic 1 Input Current
(All Digital Inputs), SDATA, SCLOCK ±10 ±10 µA max V
IN
= V
DD
±1 ±1 µA typ V
IN
= V
DD
Logic 0 Input Current (Ports 1, 2, 3) SDATA, SCLOCK –75 –25 µA max
–40 –15 µA typ V
IL
= 450 mV
Logic 1 to Logic 0 Transition Current (Ports 2 and 3) –660 –250 µA max V
IL
= 2 V
RESET
–400
±10
10
105
–140
±10
5
35
µA typ
µA max
µA min
µA max
V
IL
= 2 V
V
IN
= 0 V
V
IN
= 5 V, 3 V Internal Pull Down
V
IN
= 5 V, 3 V Internal Pull Down