XE8806A SEMTECH [Semtech Corporation], XE8806A Datasheet - Page 78

• Manufacturer Part Number: XE8806A
• Description: Ultra Low-Power Low-Voltage
• Manufacturer: SEMTECH [Semtech Corporation]

13.1 Features
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13.2 Overview
Port D (PD) is a general purpose 8 bit input/output digital port.
Figure 13-1 shows its structure.
13.3 Register map
There are four registers in the Port D (PD), namely RegPDIn, RegPDOut, RegPDDir and RegPDPullup. Table
13-2 to Table 13-5 show the mapping of control bits and functionality of these registers.
© Semtech 2006
input / output port, 8 bits wide
each bit can be set individually for input or output
pull-ups are available in input mode
snap-to-rail option in input mode
VBat
Vss
logic
Figure 13-1 : structure of PortD
Table 13-1: PD registers
register name
RegPDIn
RegPDOut
RegPDDir
RegPDPullup
13-2
4
4
8
8
8
RegPDPullup[7:4]
RegPDPullup[3:0]
XE8806A/XE8807A
RegPDOut
RegPDDir
RegPDIn
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