Microhard Systems P900 - Current Characteristics

© Microhard Systems Inc. Confidential 23
2.0 Hardware Description
2.4.3.3 Operating Conditions Current Characteristics
The parameters given in Table 2-6: Operating Conditions Current Characteristics are
derived from tests performed under the ambient temperature ratings of the Pico Series. Test
conditions measured while Vcc = 3.3V, V
DD
= 3.3V, Frequency 915MHz and ambient
temperature of 25
o
C.
2.4.3.4 I/O Port Characteristics
General Input / Output Characteristics
The parameters given in Table 2-7: I/O Static Characteristics are derived from tests
performed under the ambient temperature ratings of the Pico Series. All I/Os are CMOS and
TTL compliant. I/O’s refer to all input and outputs of the Pico Series.
Symbol Parameter Conditions Min Typ Max Unit
V
IL
Input low level voltage
TTL ports
-0.5 0.8
V
V
IH
Input high level voltage 2 V
DD
+0.5
V
IL
Input low level voltage
CMOS ports
-0.5 0.35 V
DD
V
V
IH
Input high level voltage 0.65 V
DD
V
DD
+0.5
V
hys
IO Schmitt trigger voltage
hysteresis
(1)
200
mV
I
lkg
Input leakage current
V
SS
≤ V
IN
≤ V
DD
±1
µA
R
PU
Weak pull-up equivalent resistor
(2)
V
IN
= V
SS
30 40 50
kΩ
R
PD
Weak pull-down equivalent resistor
(2)
V
IN
= V
DD
30 40 50
C
IO
I/O pin capacitance 8
pF
Table 2-9 I/O Static Characteristics
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization, not tested in production.
2. Pull-up and pull-down resistors can be used on input/output pins.
Symbol Ratings Min Typ Max Unit
I
VCC(TX)
Radio current 100% TX @ 1W 1250 1500
mA
I
VCC(TX)
Radio current 100% TX @ 500mW 375 500
I
VCC(TX)
Radio current 100% TX @ 100mW 180 250
I
VCC(RX)
Radio current 100% RX @ 1W 75 100
I
VCC(RX-RUN)
Radio RX running 40 75
I
VCC(IDLE)
Radio Idle current 2.5 3.5
I
VDD(RUN)
Digital current 45 50
I
VDD(IDLE)
Digital idle current 5
Table 2-8 Operating Conditions Current Characteristics