Integration Manual

ANNA-B4 series - System integration manual
UBX-21000517 - R03 Contents Page 20 of 76
C1-Public
2.11 ANNA-B1 to ANNA-B4 migration
ANNA-B4 is pin compatible with ANNA-B1 and provides a simple migration path for upgrading
applications with the extra features that ANNA-B4 modules deliver, including, increased memory,
increased output power, coded physical layer (PHY), higher operating temperature range, and
u-connectXpress secure-boot software.
Figure 7 shows the footprints of the u-connectXpress ANNA-B112 and ANNA-B412 modules. Although
the pin assignments vary, the positioning of the pin are identical.
Figure 7: ANNA-B112 u-connectXpress footprint and ANNA-B412 u-connectXpress footprint
Figure 8 shows the footprints of the open CPU ANNA-B112 and ANNA-B402 modules. Although the
pin assignments vary, the positioning of the pin are identical.
A = Analog function capable pin LF = Low Frequency, low drive I/O only
Signals that are highlighted in red are locked to a specific pin, the grey pins are GND pins.
Figure 8: ANNA-B112 open CPU footprint and ANNA-B402 open CPU footprint