Quectel UC20 Hardware Design

UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 20 / 82
USB_DP
69
IO
USB differential data
bus.
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USB_DM
70
IO
USB differential data
bus.
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USIM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USIM_GND
10
Specified ground for
USIM card.
USIM_VDD
14
PO
Power supply for
USIM card.
For 1.8V USIM:
Vmax = 1.9V
Vmin = 1.7V
For 3.0V USIM:
Vmax = 3.05V
Vmin = 2.7V
I
O
max = 50mA
Either 1.8V or 3V is
supported by the
module automatically.
USIM_DATA
15
IO
Data signal of USIM
card.
For 1.8V USIM:
V
IL
max = 0.6V
V
IH
min = 1.2V
V
OL
max = 0.45V
V
OH
min = 1.35V
For 3.0V USIM:
V
IL
max = 1.0V
V
IH
min = 1.95V
V
OL
max = 0.45V
V
OH
min = 2.55V
Pull-up to USIM_VDD
with 15k resistor
internally.
USIM_CLK
16
DO
Clock signal of USIM
card.
For 1.8V USIM:
V
OL
max = 0.45V
V
OH
min = 1.35V
For 3.0V USIM:
V
OL
max = 0.45V
V
OH
min = 2.55V
USIM_RST
17
DO
Reset signal of
USIM card.
For 1.8V USIM:
V
OL
max = 0.45V
V
OH
min = 1.35V
For 3.0V USIM:
V
OL
max = 0.45V
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Quectel UC20 Specifications

General

Brand	Quectel
Model	UC20
Category	Control Unit
Language	English