XE8000EV110 Semtech, XE8000EV110 Datasheet - Page 79

• Manufacturer Part Number: XE8000EV110
• Description: EVAL BOARD FOR XE8802AMI035LF
• Manufacturer: Semtech
• Type: MCUr

Specifications of XE8000EV110

• Contents: Fully Assembled Evaluation Board
• For Use With/related Products: XE88LC02MI035
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

12.1 Features
Product dependant:
12.2 Overview
Port B is a multi-purpose 8 bit Input/output port. In addition to digital behavior, all pins can be used for analog
signals. Each port terminal can be individually selected as digital input or output or as analog for sharing one of four
possible analog lines.
12.3 Register map
Table 12-1 shows the Port B registers.
© Semtech 2006
pos.
pos.
pos.
7 – 0
7 – 0
7 – 0
•
•
•
•
•
•
•
•
•
•
Input / output / analog port, 8 bits wide
Each bit can be set individually for input or output
Each bit can be set individually for open-drain or push-pull
Each bit can be set individually for pull-up or not (for input or open-drain mode)
In open-drain mode, pull-up is not active when corresponding pad is set to zero
The 8 pads can be connected individually to four internal analog lines (4 line analog bus)
Two internal freq. (16 kHz and cpuck) can be output on PB[2] and PB[3]
Two PWM signal can be output on pads PB[0] and PB[1]
The synchronous serial interface (USRT) uses pads PB[5], PB[4]
The UART interface uses pads PB[6] and PB[7] for Tx and Rx
PBOut[7-0]
PBDir [7-0]
PBIn[7-0]
RegPBOut
RegPBDir
RegPBIn
r w
r w
r w
rw
rw
rw
0 nresetpconf
X
0 nresetpconf
reset
reset
reset
XE8802 Sensing Machine Data Acquisition MCU
RegPBOut
RegPBIn
RegPBDir
RegPBOpen
RegPBPullup
RegPBAna
Table 12-1: Port B registers
Pad PB[7-0] output value
Pad PB[7-0] input status
Pad PB[7-0] direction (0=input)
Table 12-2: RegPBOut
Table 12-4: RegPBDir
register name
description in digital mode
description in digital mode
description in digital mode
Table 12-3: RegPBIn
12-2
with ZoomingADC™ and LCD driver
Analog bus selection for pad PB[7-0]
Unused
Analog bus selection for pad PB[7-0]
description in analog mode
description in analog mode
description in analog mode
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