xe8802 Semtech Corporation, xe8802 Datasheet - Page 86

• Manufacturer Part Number: xe8802
• Description: Data Acquisition Soc With 16+10 Bit Zoomingadc? Embedded Risc Controller And Lcd Driver
• Manufacturer: Semtech Corporation

13.1 Features
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-
3 to Table 13-6 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
XE8802 Sensing Machine Data Acquisition MCU
Figure 13-1 : structure of PortD
Table 13-1 : PD registers
register name
RegPDIn
RegPDOut
RegPDDir
RegPDPullup
13-2
with ZoomingADC™ and LCD driver
4
4
8
8
8
RegPDPullup[7:4]
RegPDPullup[3:0]
RegPDOut
RegPDDir
RegPDIn
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