Echelon Series 6000 Chip databook - Manual (Page 45)

1. All parameters assume nominal supply voltage (V
DD3
= 3.3 V) and operating
temperature (T
A
between -40 ºC and +85 ºC), unless otherwise noted.
2. See Clock Requirements for more detailed information about the XIN clock frequency.
3. Assumes no load on digital I/O pins, and that the I/O lines are not switching.
To calculate the I
DD3
current for each switching output, use the following formula:
pin S pin L pin DD
f V C I
Ч Ч + Ч = −
) ) 10 12 ((
_
12
_ 3
where 12x10 -12 is the effective on-chip capacitance, C
L_pin
is the load capacitance of
the I/O pin, V
S
is the supply voltage, and f
pin
is the frequency at which the pin
switches.
For example, a pin with 27 pF external load switching at 1 MHz would have a total
switching current of I
DD3
= (12pF + 27pF) * 3.6V * 10 6 Hz = 140 µA.
To calculate the total I
DD3
current, sum the I
DD3
calculations for each pin:
∑
=
N
N pin DD total DD
I I
1
_ _ 3 _ 3
Any DC loads, such as LEDs or resistors, should also be added.
4. Current consumption in transmit mode represents a peak value rather than a
continuous usage value because a Series 6000 device does not typically transmit data
continuously.
Table 13 describes the absolute maximum conditions for Series 6000 chips. Absolute
maximum ratings are limits beyond which the device might become damaged or have its
useful life impaired. Functional operation under these conditions is not implied.
Table 13. Series 6000 Chip Absolute Maximum Ratings
Parameter Description Minimum Maximum
V
DD3
Supply voltage –0.3 V +3.7 V
V
i-digitalIn
Input voltage – digital I/O pins –0.3 V +5.5 V
V
i-digitalOut
Output voltage – digital I/O pins –0.3 V V
DD3
+ 0.3 V
V
i-other
Input voltage – other non-power pins –0.3 V V
DD3
+ 0.3 V
I
i
Input current – all non-power pins –10 mA +10 mA
T
storage
Storage temperature –55 ºC +125 ºC
All input and output pins can withstand 100 mA forced into or out of the pin without latch-
up. See Avoidance of Damaging Conditions for more information about latch-up.
Series 6000 Chip Data Book 33