MC68HC908GR16CFJ Freescale Semiconductor, MC68HC908GR16CFJ Datasheet - Page 156

• Manufacturer Part Number: MC68HC908GR16CFJ
• Description: IC MCU 16K FLASH 8MHZ SPI 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR16CFJ

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: LIN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• 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 ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Enhanced Serial Communications Interface (ESCI) Module
If start bit verification is not successful, the RT clock is reset and a new search for a start bit begins.
To determine the value of a data bit and to detect noise, recovery logic takes samples at RT8, RT9, and
RT10.
To verify a stop bit and to detect noise, recovery logic takes samples at RT8, RT9, and RT10.
summarizes the results of the stop bit samples.
156
Table 14-3
The RT8, RT9, and RT10 samples do not affect start bit verification. If any
or all of the RT8, RT9, and RT10 start bit samples are 1s following a
successful start bit verification, the noise flag (NF) is set and the receiver
assumes that the bit is a start bit.
RT8, RT9, and RT10 Samples
RT3, RT5, and RT7 Samples
RT8, RT9, and RT10 Samples
summarizes the results of the data bit samples.
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Table 14-2. Start Bit Verification
MC68HC908GR16 Data Sheet, Rev. 5.0
Table 14-4. Stop Bit Recovery
Table 14-3. Data Bit Recovery
NOTE
Data Bit Determination
Start Bit Verification
Framing Error Flag
Yes
Yes
Yes
Yes
No
No
No
No
0
0
0
1
0
1
1
1
1
1
1
0
1
0
0
0
Noise Flag
Noise Flag
Noise Flag
Freescale Semiconductor
0
1
1
0
1
0
0
0
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
Table 14-4