Rainbow Electronics RA01 - Manual (Page 7)

RA01
Version: 1.0 Date: 10/8/2008
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 7
GENERAL DEVICE SPECIFICATIONS
All voltages are referenced to V
ss
, the potential on the ground reference pin VSS.
Absolute Maximum Ratings (non-operating)
Symbol Parameter Min Max Units
V
dd
Positive supply voltage -0.5 6.0 V
V
in
Voltage on any pad -0.5 V
dd
+0.5 V
I
in
Input current into any pad except VDD and VSS 25 25 mA
ESD Electrostatic discharge with human body model 1000 V
T
st
Storage temperature 55 125
o
C
T
ld
Lead temperature (soldering, max 10 s) 260
o
C
Recommended Operating Range
Symbol Parameter Min Max Units
V
dd
Positive supply voltage 2.2 3.8 V
T
op
Ambient operating temperature 40 +85
o
C
ELECTRICAL SPECIFICATION
(Min/max values are valid over the whole recommended operating range, typical conditions: T
op
= 27
o
C; V
dd
= V
oc
=
2.7 V)
DC Characteristics
Symbol Parameter Conditions/Notes Min Typ Max Units
I
dd
Supply current all bands 9.6 12 mA
I
pd
Standby current all blocks disabled 0.2 μA
I
lb
Low battery voltage detector and
wake-up timer current 4 μA
I
x
Idle current crystal oscillator is ON 0.5 mA
V
lb
Low battery detection threshold programmable in 0.1 V steps 2.0 3.5 V
V
lba
Low battery detection accuracy ± 2.5 %
V
POR
V
dd
threshold required
to generate a POR
1.5 V
V
POR,hys
POR hysteresis larger glithches on the V
dd
generate a POR even above
the threshold V
POR
0.6 V
SR
Vdd
V
dd
slew rate for proper POR generation 0.1 V/ms
V
il
Digital input low level 0.3*V
dd
V
V
ih
Digital input high level 0.7*V
dd
V
I
il
Digital input current V
il
= 0 V -1 1 μA
I
ih
Digital input current V
ih
= V
dd
, V
dd
= 3.8 V -1 1 μA
V
ol
Digital output low level I
ol
= 2 mA 0.4 V
V
oh
Digital output high level I
oh
= -2 mA V
dd
-0.4 V