MC68HC908GR4CFAE Freescale Semiconductor, MC68HC908GR4CFAE Datasheet - Page 247

• Manufacturer Part Number: MC68HC908GR4CFAE
• Description: IC MCU 4K FLASH 8.2MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR4CFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 4KB (4K 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: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• 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 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 3
• Operating Supply Voltage: 3 V to 5 V
• Maximum Operating Temperature: + 125 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

18.5.3.7 Fast Data Tolerance
MC68HC908GR8 — Rev 4.0
MOTOROLA
With the misaligned character shown in
170 RT cycles at the point when the count of the transmitting device is
10 bit times
The maximum percent difference between the receiver count and the
transmitter count of a slow 9-bit character with no errors is
Figure 18-8
misaligned without causing a noise error 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.
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
10 bit times
The maximum percent difference between the receiver count and the
transmitter count of a fast 8-bit character with no errors is
RECEIVER
RT CLOCK
Freescale Semiconductor, Inc.
For More Information On This Product,
Serial Communications Interface (SCI)
shows how much a fast received character can be
Go to: www.freescale.com
16 RT cycles + 10 RT cycles = 154 RT cycles.
16 RT cycles + 3 RT cycles = 163 RT cycles.
16 RT cycles = 160 RT cycles.
170 163
------------------------- -
154 160
------------------------- -
Figure 18-8. Fast Data
STOP
170
154
–
–
100
100
SAMPLES
DATA
Serial Communications Interface (SCI)
Figure
Figure
=
=
4.12%
3.90%
IDLE OR NEXT CHARACTER
·
18-7, the receiver counts
18-8, the receiver counts
Functional Description
Technical Data
247