MC908GR16AVFAE Freescale Semiconductor, MC908GR16AVFAE Datasheet - Page 153
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MC908GR16AVFAE
Manufacturer Part Number
MC908GR16AVFAE
Description
IC MCU 8BIT 16K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GR16ACFAE.pdf
(270 pages)
Specifications of MC908GR16AVFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08GR
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
ESCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
37
Number Of Timers
4
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GR16AVFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MC908GR16AVFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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error occurs. In most applications, the baud rate tolerance is much more than the degree of misalignment
that is likely to occur.
As the receiver samples an incoming character, it resynchronizes the RT clock on any valid falling edge
within the character. Resynchronization within characters corrects misalignments between transmitter bit
times and receiver bit times.
Slow Data Tolerance
Figure 14-8
or 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.
Fast Data Tolerance
Figure 14-9
or a framing error. The fast stop bit ends at RT10 instead of RT16 but is still there for the stop bit data
samples at RT8, RT9, and RT10.
Freescale Semiconductor
•
•
•
•
•
•
For an 8-bit character, data sampling of the stop bit takes the receiver 9 bit times × 16 RT cycles
+ 10 RT cycles = 154 RT cycles.
With the misaligned character shown in
when the count of the transmitting device is 9 bit times × 16 RT cycles + 3 RT cycles
= 147 RT cycles.
The maximum percent difference between the receiver count and the transmitter count of a slow
8-bit character with no errors is:
For a 9-bit character, data sampling of the stop bit takes the receiver 10 bit times × 16 RT cycles
+ 10 RT cycles = 170 RT cycles.
With the misaligned character shown in
when the count of the transmitting device is 10 bit times × 16 RT cycles + 3 RT cycles
= 163 RT cycles.
The maximum percent difference between the receiver count and the transmitter count of a slow
9-bit character with no errors is:
shows how much a slow received character can be misaligned without causing a noise error
shows how much a fast received character can be misaligned without causing a noise error
RECEIVER
RT CLOCK
MC68HC908GR16A Data Sheet, Rev. 1.0
MSB
Figure 14-8. Slow Data
154 147
------------------------- -
170 163
------------------------- -
154
170
–
–
Figure
Figure
×
×
100
100
14-8, the receiver counts 154 RT cycles at the point
14-8, the receiver counts 170 RT cycles at the point
SAMPLES
=
=
DATA
4.54%
4.12%
STOP
Functional Description
153
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