Specifications

WM_PRJ_Q2400_PTS_001 - 003
6th November 2002
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Pin description
Signal Pin number I/O I/O type Description
BOOT 12 I CMOS Flash Loading
Note: The nominal firmware download procedure is using the X-modem
2.15 Reset signal (~RST)
This signal is used to force a reset procedure by providing low level during at
least 100µs. This signal has to be considered as an emergency reset only. A
reset procedure is already driven by an internal hardware during the power-up
sequence.
This signal can also be used to provide a reset to an external device. It then
behaves as an output. If no external reset is necessary this input can be left
open. If used (emergency reset), it has to be driven by an open collector or an
open drain.
BOOT : Pin 12 RESET : Pin 14
Switch RESET
Figure 13 : RST pin connection
•
If Switch Reset = 1, Reset pin 14 = 0
•
If Switch Reset = 0, Reset pin 14 = 1
Pin description
Signal Pin number I/O I/O type Description
∼
RST
14 I/O Module Reset
Electrical Characteristics
Parameter Min Max Unit
Input Impedance ( R ) 4.7
k
Ω
Input Impedance ( C ) 10 nF