SimCom SIM5218E Hardware Design page 18

SIM5218E Hardware Design
UART_RTS
UART_CTS
UART_RI
UART_DCD
USIM interface
PIN NAME
V_USIM
USIM_DATA
USIM_CLK
USIM_RESET
IIC interface
PIN NAME
IIC_SDA
IIC_SCL
Other interface
Reset
GPIO0 (PCM_IN)
GPIO1
GPIO2(PCM_SYNC)
SIM5218E_HD_V1.03
O Request to Send, if not use, left open.
I Clear to Send, if not use, left open.
O Ring Indicator, if not use, left open.
O Data Carrier detection, if not use, left
open.
I/O DESCRIPTION
O Voltage Supply for SIM card
I/O SIM Data Output/Input, which has
been pulled up with a 22kR resistor to
V_USIM in module. So please don't
pull up or pull down in your
application circuit.
O SIM Clock
O SIM Reset
I/O DESCRIPTION
I/O I2C data, if not use, left open. It has
been pulled up with a 2.2kR resistor
to 2.6V in module. So there is no
need to pull up it in your application
circuit.
O I2C clock output, if not use, left open.
It has been pulled up with a 2.2kR
resistor to 2.6V in module. So there is
no need to pull up it in your
application circuit.
I System reset in, active low.
I General Input PIN with interrupt. If
not use, left open. It also can be
multiplex as the PCM_IN pin.
O Status Indicating LED Control..
I General Input PIN. If not use, left
open. It also can be multiplex as the
PCM_SYNC pin.
17
DC CHARACTERISTICS
The voltage can be select
by software either 1.8v or
3V
VILmin=0V
VILmax=0.3*V_USIM
VIHmin=0.7* V_USIM
VIHmax= V_USIM +0.3
VOLmin=GND
VOLmax=0.2V
VOHmin= V_USIM -0.2
VOHmax= V_USIM
DC CHARACTERISTICS
VIHmin=0.7*VDD_EXT
VIHmax= VDD_EXT+0.3
VOLmin=GND
VOLmax=0.2V
VOHmin= VDD_EXT-0.2
VOHmax= VDD_EXT
11.06.2009
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