DEMO9S12XEP100 Freescale Semiconductor, DEMO9S12XEP100 Datasheet - Page 190
![BOARD DEMO FOR MC9S12XEP100](/photos/9/23/92312/demo9s12xep100_sml.jpg)
DEMO9S12XEP100
Manufacturer Part Number
DEMO9S12XEP100
Description
BOARD DEMO FOR MC9S12XEP100
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet
1.EVB9S12XEP100.pdf
(1328 pages)
Specifications of DEMO9S12XEP100
Contents
Board, Cables, CD
Processor To Be Evaluated
MC9S12XEP100
Data Bus Width
16 bit
Interface Type
RS-232
Silicon Manufacturer
Freescale
Core Architecture
S12
Core Sub-architecture
S12
Silicon Core Number
MC9S12
Silicon Family Name
S12XE
Rohs Compliant
Yes
For Use With/related Products
MC9S12XEP100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DEMO9S12XEP100
Manufacturer:
PANASONIC
Quantity:
46 000
Company:
Part Number:
DEMO9S12XEP100
Manufacturer:
Freescale Semiconductor
Quantity:
135
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Chapter 2 Port Integration Module (S12XEPIMV1)
t
pulse
Figure 2-109. Pulse Illustration
A valid edge on an input is detected if 4 consecutive samples of a passive level are followed by 4
consecutive samples of an active level directly or indirectly.
The filters are continuously clocked by the bus clock in RUN and WAIT mode. In STOP mode the clock
is generated by an RC-oscillator in the Port Integration Module. To maximize current saving the RC
oscillator runs only if the following condition is true on any pin individually:
Sample count <= 4 and interrupt enabled (PIE=1) and interrupt flag not set (PIF=0)
2.5
Initialization Information
2.5.1
Port Data and Data Direction Register writes
It is not recommended to write PORTx/PTx and DDRx in a word access. When changing the register pins
from inputs to outputs, the data may have extra transitions during the write access. Initialize the port data
register before enabling the outputs.
MC9S12XE-Family Reference Manual , Rev. 1.23
190
Freescale Semiconductor
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