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TIMING
Electrical characteristics
www.digiembedded.com 479
Ti mi ng
CHAPTER 16
This chapter provides the electrical specifications, or timing, integral to the
operation of the processor. Timing includes information about DC and AC
characteristics, output rise and fall timing, and crystal oscillator specifications.
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Electrical characteristics
Absolute
maximum ratings
The processor operates at a 1.8V core, with 3.3V I/O ring voltages.
Permanent device damage can occur if absolute maximum ratings are ever
exceeded. Absolute maximum ratings are below.
Parameter Symbol
a
aV
DDA
, V
INA
, V
OUTA
: Ratings of I/O cells for 3.3V interface.
V
DDC
: Ratings of internal cell.
The processor is immune to power supply sequencing problems.
Rating Unit
DC supply voltage V
DDA
- 0.3 to + 3.9
V
DC input voltage
V
INA
-0.3 to 5.0V
V
DC output voltage V
OUTA
-0.3 to V
DDA
+0.3
V
DC input current I
IN
± 10
mA
Storage temperature T
STG
- 40 to + 125
°C