User's Manual

Table Of Contents
ELECTRICAL DATA S3C2450X RISC MICROPROCESSOR
29-6
Table 29-6. USB DC Electrical Characteristics
V
DD
= 3.0 to 3.6V; GND = 0V; Cload = 2uF; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
DD
Supply voltage 3.0 3.3 3.6 V
V
DI
Differential input sensitivity 0.2 V
V
CM
Differential common mode voltage 0.8 2.5 V
V
IL
Low level input voltage 0.8 V
V
IH
High level input voltage 2.0 V
V
OL
Low level output voltage
RL = 1.5KΩ to +3.6V
0.3 V
V
OH
High level output voltage
RL = 15KΩ to GND
2.8 3.6 V
I
LZ
Tri-state leakage current -10 10 uA
Cin Transceiver capacitance Pin to GND 10 pF
R
PD
Pull down resistance on pins DP/DM Enable internal resistors 10 20
kΩ
R
PU
Pull up resistance on DP Enable internal resistor 1 2
kΩ
Z
DRV
Driver output impedance Steady-state drive
[1]
39 44
Ω
Z
INP
Input impedance 10
MΩ
V
TERM
Termination voltage for upstream port
pull up
3.0 3.6 V
Table 29-7. RTC OSC DC Electrical Characteristics
Symbol Parameter Min Typ Max Unit
VDD_RTC Output supply voltage 1.7 2.5 3.6 V
V
IH
DC input logic high 0.7*VDDrtc V
V
IL
DC input logic low 0.3*VDDrtc V
I
IH
High level input current -10 10
μA
I
IL
Low level input current -10 10
μA