SIM340 Hardware Design
Version history
Date
Version
Description of change
Author
2005-04-13
01.00
Origin
anthony
2005-06-29
01.01
Modify the RESET pin DC characteristics etc
anthony
2005-08-02
01.02
Modify the ESD characteristics etc
anthony
2005-08-23
01.03
Delete reset part, update mechanical dimensions, sleep
mode and board-to-board connector description
anthony
2005-11-02
01.04
Add the SIM340 current consumption, modify the
Buzzer pin
anthony
2005-11-22
01.05
Add the restart timing figure
anthony
2005-12-27
01.06
Add the Software upgrade, the auto-baud and the over
temperature power off
Modify the sleep mode control and the SIM card
detection
anthony
2006-02-22
01.07
Modify the figure 3,4,5,20,28 and add the figure 14
anthony
2006-03-16
02.01
Modify for SIM340_V7.02
Add support GPRS class 8, Modify the VDD_EXT
level, “RDY” out by set fixed baudrate, timing of the
turning on system
anthony
2006-04-04
02.02
Modify the function of GPIO5 and BUZZER pins, the
10K resistance integrated in the VRTC pin.
Add the description of the Autobauding function
anthony
2006-05-09
02.03
Update Temperature range
Modify the mechanical dimensions of SIM340
Delete the description of MOLEX connector
Modify the figure of the SIM reference circuit
anthony
2006-6-10
03.01
Update the figure of SIM card holder
anthony
2006-7-27
03.02
Add the note about the VRTC pin
Add the note about the configuration be set and saved
as the fix baud rate
anthony
2006-8-30
03.03
Delete the chapter of antenna gain
Modify the figure of the timing of turning on system
Modify the figure of the timing of turning off system
Modify the high voltage and low voltage of the
PWRKEY
Modify the PIN name
anthony
2006-11-09
03.04
Modify the audio output characteristics
anthony
2007-01-09
03.05
Modify the SIM340 key features
anthony
SIM340_HD_V3.09
18.03.2009
7
