MC9S12XEP100CAL Freescale Semiconductor, MC9S12XEP100CAL Datasheet - Page 756

IC MCU 16BIT 1M FLASH 112-LQFP

MC9S12XEP100CAL

Manufacturer Part Number
MC9S12XEP100CAL
Description
IC MCU 16BIT 1M FLASH 112-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet

Specifications of MC9S12XEP100CAL

Core Processor
HCS12X
Core Size
16-Bit
Speed
50MHz
Connectivity
CAN, EBI/EMI, I²C, IrDA, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
91
Program Memory Size
1MB (1M x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.72 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
112-LQFP
Processor Series
S12XE
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
64 KB
Interface Type
CAN/SCI/SPI
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
91
Number Of Timers
25
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
KIT33812ECUEVME, EVB9S12XEP100, DEMO9S12XEP100
Minimum Operating Temperature
- 40 C
On-chip Adc
16-ch x 12-bit
Package
112LQFP
Family Name
HCS12X
Maximum Speed
50 MHz
Operating Supply Voltage
1.8|2.8|5 V
For Use With
EVB9S12XEP100 - BOARD EVAL FOR MC9S12XEP100DEMO9S12XEP100 - BOARD DEMO FOR MC9S12XEP100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Chapter 20 Serial Communication Interface (S12SCIV5)
20.4.6.5
A transmitting device may be operating at a baud rate below or above the receiver baud rate. Accumulated
bit time misalignment can cause one of the three stop bit data samples (RT8, RT9, and RT10) to fall outside
the actual stop bit. A noise error will occur if the RT8, RT9, and RT10 samples are not all the same logical
values. A framing error will occur if the receiver clock is misaligned in such a way that the majority of the
RT8, RT9, and RT10 stop bit samples are a logic zero.
As the receiver samples an incoming frame, it re-synchronizes the RT clock on any valid falling edge
within the frame. Re synchronization within frames will correct a misalignment between transmitter bit
times and receiver bit times.
20.4.6.5.1
Figure 20-28
a framing error. The slow stop bit begins at RT8 instead of RT1 but arrives in time for the stop bit data
samples at RT8, RT9, and RT10.
Let’s take RTr as receiver RT clock and RTt as transmitter RT clock.
For an 8-bit data character, it takes the receiver 9 bit times x 16 RTr cycles +7 RTr cycles = 151 RTr cycles
to start data sampling of the stop bit.
With the misaligned character shown in
the count of the transmitting device is 9 bit times x 16 RTt cycles = 144 RTt cycles.
The maximum percent difference between the receiver count and the transmitter count of a slow 8-bit data
character with no errors is:
For a 9-bit data character, it takes the receiver 10 bit times x 16 RTr cycles + 7 RTr cycles = 167 RTr cycles
to start data sampling of the stop bit.
With the misaligned character shown in
the count of the transmitting device is 10 bit times x 16 RTt cycles = 160 RTt cycles.
The maximum percent difference between the receiver count and the transmitter count of a slow 9-bit
character with no errors is:
756
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
((151 – 144) / 151) x 100 = 4.63%
((167 – 160) / 167) X 100 = 4.19%
Baud Rate Tolerance
shows how much a slow received frame can be misaligned without causing a noise error or
Slow Data Tolerance
RT Clock
Receiver
MC9S12XE-Family Reference Manual , Rev. 1.23
MSB
Figure
Figure
Figure 20-28. Slow Data
20-28, the receiver counts 151 RTr cycles at the point when
20-28, the receiver counts 167 RTr cycles at the point when
Samples
Data
Stop
Freescale Semiconductor

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