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3.3.22 I2C EEPROM socket
I2C EEPROM socket - CN5
Pin
Signal
Pin
1
A0
8
2
A1
7
3
A2
6
4
GND
5
SW1 Switch
ON Position
1
WP = 0
2
A0 = 0
3
A1 = 0
4
A2 = 0
3.3.23 Pushbuttons
On the carrier board, there are four momentary pushbuttons (with contacts normally open) for the direct handling of Qseven
The first pushbutton, SW7, is placed on PWRBTN# signal. Upon the pressure of this pushbutton, the Qseven
sequence.
The second pushbutton, SW8, is placed on SLP_BTN# signal. Upon the pressure of this pushbutton, the Qseven
states are supported).
The third pushbutton, SW9, is placed on RSTBTN# signal. Upon the pressure of this pushbutton, the Qseven
The fourth pushbutton, SW10, is placed on LID_BTN# signal. Such a signal can be used by the Qseven
lid switch, like those used to detect opening / closure of the notebooks. Upon changes in LID_BTN# state, the OS could trigger the transition of the module from
Working to Sleep status, or vice versa.
JP14 position
LID_BTN# status
Not Inserted
Normal working
Inserted
Tied to GND
CQ7-A30
CQ7-A30 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
In many applications it is useful to have a small non-volatile storage device, like an
EEPROM.
Signal
For this purpose, connected to I2C bus, there is an 8-pin SOIC socket type LOTES
p/n ACA-SPI-004-K0 or equivalent, p. 1.27mm, with the pinout shown in the table on the left.
+3.3V_S
WP
GP0_I2C_CK
GP0_I2C_DAT
OFF Position
Please notice that address lines (A0, A1 and A2) and Write Protect (WP) line have to be set
manually set by the customer using a dedicated switch (SW1), which is placed right near the I2C
WP = 1
EEPROM Socket.
A0 = 1
Setting of these signals can be made according to the table on the left.
A1 = 1
A2 = 1
It is possible to manage the LID_BTN# signal also using dedicated jumper JP14, which is a standard
pin header, P2.54mm, 1x2 pin.
This same jumper can be used to manage an external, remote switch/pushbutton with contacts normally
open.
®
power management signals.
®
module will perform a power up / power down
®
module will enter in a sleep state (is such
®
module will perform a reset.
®
module to detect the opening / the closure of an external
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