MC9S12C128VFU Freescale Semiconductor, MC9S12C128VFU Datasheet - Page 407
MC9S12C128VFU
Manufacturer Part Number
MC9S12C128VFU
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12C128VFU.pdf
(690 pages)
Specifications of MC9S12C128VFU
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
25MHz
Interface Type
CAN/SCI/SPI
Program Memory Type
Flash
Program Memory Size
128KB
Total Internal Ram Size
4KB
# I/os (max)
60
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/2.97V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
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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:
13.4.4.5.2
Figure 13-21
instead of RT16 but is still sampled at RT8, RT9, and RT10.
For an 8-bit data character, it takes the receiver 9 bit times x 16 RTr cycles + 10 RTr cycles = 154 RTr cycles
to finish 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 fast 8-bit
character with no errors is:
For a 9-bit data character, it takes the receiver 10 bit times x 16 RTr cycles + 10 RTr cycles = 170 RTr cycles
to finish data sampling of the stop bit.
With the misaligned character shown in
the count of the transmitting device is 11 bit times x 16 RTt cycles = 176 RTt cycles.
The maximum percent difference between the receiver count and the transmitter count of a fast 9-bit
character with no errors is:
13.4.4.6
To enable the SCI to ignore transmissions intended only for other receivers in multiple-receiver systems,
the receiver can be put into a standby state. Setting the receiver wakeup bit, RWU, in SCI control register
2 (SCICR2) puts the receiver into standby state during which receiver interrupts are disabled.The SCI will
still load the receive data into the SCIDRH/L registers, but it will not set the RDRF flag.
Freescale Semiconductor
((167 – 160) / 167) X 100 = 4.19%
((160 – 154) / 160) x 100 = 3.75%
((176 – 170) / 176) x 100 = 3.40%
Receiver Wakeup
shows how much a fast received frame can be misaligned. The fast stop bit ends at RT10
Fast Data Tolerance
RECEIVER
RT CLOCK
MC9S12C-Family / MC9S12GC-Family
Figure
Figure
Figure
Figure 13-21. Fast Data
STOP
Chapter 13 Serial Communications Interface (S12SCIV2) Block Description
13-20, the receiver counts 167 RTr cycles at the point when
13-21, the receiver counts 154 RTr cycles at the point when
13-21, the receiver counts 170 RTr cycles at the point when
Rev 01.24
SAMPLES
DATA
IDLE OR NEXT FRAME
407
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