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UM1855 Connectors
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3.3 LCD daughterboard connectors CN11 and CN14
Two 48-pin male headers CN11 and CN14 are used to connect to LCD glass module
daughterboard MB979. The type of connectors, their mutual orientation, distance and
terminal assignment are kept for a number of ST MCU evaluation boards. This
standardization allows developing daughterboards that can be used in multiple evaluation
kits. The width between CN11 pin1 and CN14 pin1 is 700 mils (17.78 mm).
STM32L476ZGT6 ports routed to these two connectors can be accessed on odd CN11 and
CN14 pins (the row of pin 1), when no daughterboard is plugged in.
Daughterboards plugging into CN11 and CN14 must keep the even terminals of CN11 and
CN14 open.
Table 33 shows the signal assignment to terminals.
Table 33. CN11 and CN14 daughterboard connectors
CN11 CN14
Odd pin MCU port Odd pin MCU port
1PA91PD2
3PA83PC12
5 PA10 5 PC11
7 PB9 7 PC10
9PB119PC3
11 PB10 11 PC4
13 PB5 13 PC5
15 PB14 15 PC6
17 PB13 17 PC7
19 PB12 19 PC8
21 PA15 21 PC9
23 PB8 23 PD8
25 PB15 25 PD9
27 PC2 27 PD10
29 PC1 29 PD11
31 PC0 31 PD12
33 PA3 33 PD13
35 PA2 35 PD14
37 PB0 37 PD15
39 PA7 39 PE0
41 PA6 41 PE1
43 PB4 43 PE2
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