CC2550_06 Datasheet, PDF (8/55 Pages) Texas Instruments – Single Chip Low Cost Low Power RF Transmitter

CC2550
4.6 DC Characteristics
Tc = 25°C if nothing else stated.
Digital Inputs/Outputs
Logic "0" input voltage
Logic "1" input voltage
Logic "0" output voltage
Logic "1" output voltage
Logic "0" input current
Logic "1" input current
Min
0
VDD-0.7
0
VDD-0.3
NA
NA
Max
0.7
VDD
0.5
VDD
-50
50
Unit Condition
V
V
V For up to 4 mA output current
V For up to 4 mA output current
nA Input equals 0 V
nA Input equals VDD
Table 9: DC characteristics
4.7 Power On Reset
When the power supply complies with the requirements in Table 10 below, proper Power-On-
Reset functionality is guaranteed. Otherwise, the chip should be assumed to have unknown state
until transmitting an SRES strobe over the SPI interface. See Section 16.1 on page 23 for further
details.
Parameter
Min Typ Max Unit Condition/Note
Power-up ramp-up time.
Power off time
1
5
ms From 0 V until reaching 1.8 V
ms Minimum time between power off and power-on.
Table 10: Power-on reset requirements
5 Pin Configuration
16 15 14 13
SCLK 1
SO (GDO1) 2
DVDD 3
DCOUPL 4
5678
12 AVDD
11 RF_N
10 RF_P
9 CSn
GND
Exposed die
attach pad
Figure 1: Pinout top view
Note: The exposed die attach pad must be connected to a solid ground plane as this is the main
ground connection for the chip.
PRELIMINARY Data Sheet (Rev.1.2) SWRS039A
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