MCHC908GR8CFAE Freescale Semiconductor, MCHC908GR8CFAE Datasheet - Page 246

IC MCU FLSH 8BIT8MHZ 7.5K32-LQFP

MCHC908GR8CFAE

Manufacturer Part Number
MCHC908GR8CFAE
Description
IC MCU FLSH 8BIT8MHZ 7.5K32-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheets

Specifications of MCHC908GR8CFAE

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
21
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Controller Family/series
HC08
No. Of I/o's
21
Ram Memory Size
384Byte
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Processor Series
HC08G
Core
HC08
Data Bus Width
8 bit
Data Ram Size
384 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8.2 MHz
Number Of Programmable I/os
21
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68CBL05CE, M68EML08GPGTE
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 6 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
 Details

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Serial Communications Interface (SCI)
18.5.3.6 Slow Data Tolerance
Technical Data
246
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.
Figure 18-7
misaligned without causing a noise error 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.
For an 8-bit character, data sampling of the stop bit takes the receiver
9 bit times
With the misaligned character shown in
154 RT cycles at the point when the count of the transmitting device is
9 bit times
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
RECEIVER
RT CLOCK
Freescale Semiconductor, Inc.
For More Information On This Product,
Serial Communications Interface (SCI)
shows how much a slow received character can be
Go to: www.freescale.com
16 RT cycles + 10 RT cycles = 154 RT cycles.
16 RT cycles + 3 RT cycles = 147 RT cycles.
16 RT cycles + 10 RT cycles = 170 RT cycles.
MSB
154 147
------------------------- -
Figure 18-7. Slow Data
154
100
SAMPLES
DATA
Figure
=
4.54%
18-7, the receiver counts
MC68HC908GR8 — Rev 4.0
STOP
MOTOROLA

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