Specifications

COMPANY CONFIDENTIAL
17
(2) USIM card socket
It is recommended to take electrostatic discharge (ESD) protection measures near the USIM
card socket. The USIM socket should be placed near the NGFF interface (<100 mm),
because a long circuit may impact signal quality.
(3) UIM-PWR
UIM_PWR power supply can supply 1.8 V and 2.85 V power to UIM card and auto detects
follow SIM card type
(4) SIM Detect
This signal is used to detect the insertion and remov
al of a SIM device in the SIM socket.
With a Normal Short SIM Card connector, PUSH-PUSH type, the detect switch is normally
shorted to ground when no SIM card is inserted. When the SIM is inserted, the
SIM_DETECT will transition from logic 0 to logic 1 state. The rising edge will indicate
insertion of the SIM card. When the SIM is pulled out, the SIM_DETECT will transition from
logic1 to logic 0. This falling edge will indicates the pulling out of the SIM card. The M.2
module monitoring this signal will treat the rising/falling edge or the actual logic state as an
interrupt, that when triggered, the module will act accordingly.
The UIM_PWR from the PRODUCT shall be turned ON 2 seconds after UIM_DETECT pin is
asserted to HIGH. This is to ensure the power is not turned ON earlier before SIM card to be
seated well.
(5) eSIM support
Build in eUICC is a product specifically designed for
embedded UICC applications. It
combines traditional smart card security with a more form factor at close as possible to the
chip size, a chip-scale package (CSP), it supports Secure Element with
the highest security
level (EAL5+ and EMVCo certified hardware) and fully compatible with the ISO/IEC 7816-3