MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 192
MC68HC908AP8CB
Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
Specifications of MC68HC908AP8CB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Infrared Serial Communications Interface Module (IRSCI)
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.
192
Table 12-3
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 logic 1s following a
successful start bit verification, the noise flag (NF) is set and the receiver
assumes that the bit is a start bit.
summarizes the results of the data bit samples.
RT8, RT9, and RT10
RT3, RT5, and RT7
RT8, RT9, and RT10
Samples
MC68HC908AP Family Data Sheet, Rev. 4
Samples
Table 12-2. Start Bit Verification
Samples
000
001
010
011
100
101
110
111
Table 12-4. Stop Bit Recovery
Table 12-3. Data Bit Recovery
011
100
101
110
111
000
001
NOTE
Determination
Verification
Error Flag
Start Bit
Framing
Data Bit
Yes
No
No
No
No
1
1
0
0
0
1
0
1
1
1
Noise Flag
Noise Flag
Noise Flag
0
1
0
1
0
0
0
0
1
1
1
1
1
1
0
Freescale Semiconductor
Table 12-4
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