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XE8806A Datasheet(PDF) 9 Page - Semtech Corporation |
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XE8806A Datasheet(HTML) 9 Page - Semtech Corporation |
9 / 143 page © Semtech 2006 www.semtech.com 1-7 XE8806A/XE8807A 1.2.5 Bare die XE8807A The circuit is also available in bare die for chip on board assembly. All VBAT pins and all VSS pins should be connected together. The substrate of the circuit is connected to VSS. (123, 3236) PB(6) (123,2970) VBAT (123, 2658) PB(7) (123,2345) PD(5) (123,2113) PA(5) (123,1386) PA(6) (123,1072) PD(6) (123, 835) TEST (123, 545) VSS (123, 310) VREG 4050µm PB(1) (3787,3078) PB(0) (3787,2714) PD(2) (3787,2354) PA(2) (3787,2082) PA(1) (3787,1530) PD(1) (3787,1178) NRESET (3787, 913) VSS (3787, 588) VPP (3787, 340) XEMICS Figure 1-6. Die dimension and pin location of the XE8807A 1.3 Pin assignment The table below gives a short description of the different pin assignments. Pin Assignment VBAT Positive power supply VSS Negative power supply VREG Connection for the mandatory external capacitor of the voltage regulator VPP High voltage supply for flash memory programming (NC in ROM versions) NRESET Resets the circuit when the voltage is low TEST Sets the pin to flash programming mode XIN/XOUT Quartz crystal connections, also used for flash memory programming PA(7:0) Parallel input port A pins PB(7:0) Parallel I/O port B pins PD(7:0) Parallel I/O port D pins Table 1-1. Pin assignment |
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