8.9 FMC memory extension connectors CN12 and CN13
All signals for memory are also connected to memory connectors CN12 and CN13 for memory daughterboards.
Two 40-pin male headers CN12 and CN13 are used to connect with the memory daughterboard. GPIOs which
work as FMC memory signals and don’t on CN5 and CN6 are available on these two connectors.
The space between these two connectors is defined as a standard that allows developing common
daughterboards. The standard width between CN13 pin1 and CN12 pin1 is 1914 mils (48.62 mm). For signal
assignment details refer to Table 62, Table 63, Table 64, and Table 65.
Table 62. Memory connector CN12 left odd pins
Pin number Pin name STM32H7B3I-EVAL pin name
How to
disconnect
with function
block on
STM32H7B3I-
EVAL board
1 PH6 FMC_SDR_SDNE1 R68
3 PF13 FMC_A7 R325
5
PF12
(1)
FMC_A6 || MOTOR_ADC1_INP6 R326
7
PG1
(1)
FMC_A11 || OCSPI2_IO5 R333
11 PE7 FMC_D4 R338
13
PE10
(1)
FMC_D7 || MOTOR_DFSDM1_DATIN4 R341
15 PE12 FMC_D9 R345
17 PE15 FMC_D12 R348
19 PE13 FMC_D10 R353
21 PD11 FMC_A16 R359
23 PD12 FMC_A17 R362
25 PG5 FMC_A15 R366
27 PH11 FMC_D19 R370
31 PD13 FMC_A18 R375
33 PG2 FMC_A12 R380
35
PD8
(1)
FMC_D13 || MOTOR_DFSDM1_CKIN3 R384
37 PD9 FMC_D14 R385
39 PD14 FMC_D0 R391
1. Pins shared between different functions and requiring hardware configuration (Such as jumper and soldered bridges)
UM2662
FMC memory extension connectors CN12 and CN13
UM2662 - Rev 1
page 65/95
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