MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 191
MC908AP32CFBE
Manufacturer Part Number
MC908AP32CFBE
Description
Manufacturer
Freescale
Datasheet
1.MC908AP32CFBE.pdf
(324 pages)
Specifications of MC908AP32CFBE
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
32
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908AP32CFBE
Manufacturer:
Freescale
Quantity:
6
Company:
Part Number:
MC908AP32CFBE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908AP32CFBE
Manufacturer:
FREESCALE
Quantity:
20 000
Company:
Part Number:
MC908AP32CFBER
Manufacturer:
FREESCALE
Quantity:
5 000
Company:
Part Number:
MC908AP32CFBER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 191 of 324
- Download datasheet (4Mb)
12.5.3.2 Character Reception
During an SCI reception, the receive shift register shifts characters in from the RxD pin. The SCI data
register (IRSCDR) is the read-only buffer between the internal data bus and the receive shift register.
After a complete character shifts into the receive shift register, the data portion of the character transfers
to the IRSCDR. The SCI receiver full bit, SCRF, in IRSCI status register 1 (IRSCS1) becomes set,
indicating that the received byte can be read. If the SCI receive interrupt enable bit, SCRIE, in IRSCC2 is
also set, the SCRF bit generates a receiver CPU interrupt request.
12.5.3.3 Data Sampling
The receiver samples the RxD pin at the RT clock rate. The RT clock is an internal signal with a frequency
16 times the baud rate. To adjust for baud rate mismatch, the RT clock is resynchronized at the following
times (see
To locate the start bit, data recovery logic does an asynchronous search for a logic 0 preceded by three
logic 1s. When the falling edge of a possible start bit occurs, the RT clock begins to count to 16.
To verify the start bit and to detect noise, data recovery logic takes samples at RT3, RT5, and RT7.
Table 12-2
Freescale Semiconductor
•
•
RT CLOCK
RT CLOCK
SAMPLES
After every start bit
After the receiver detects a data bit change from logic 1 to logic 0 (after the majority of data bit
samples at RT8, RT9, and RT10 returns a valid logic 1 and the majority of the next RT8, RT9, and
RT10 samples returns a valid logic 0)
SCI_RxD
CLOCK
RESET
STATE
Figure
RT
summarizes the results of the start bit verification samples.
12-9):
RT3, RT5, and RT7
QUALIFICATION
START BIT
Figure 12-9. Receiver Data Sampling
MC68HC908AP Family Data Sheet, Rev. 4
Samples
Table 12-2. Start Bit Verification
000
001
010
VERIFICATION
START BIT
Verification
Start Bit
Yes
Yes
Yes
START BIT
SAMPLING
DATA
Noise Flag
0
1
1
SCI Functional Description
LSB
191
Related parts for MC908AP32CFBE
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
TOWER ELEVATOR BOARDS HARDWARE
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SERIAL I/O HARDWARE
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
LCD MODULE FOR TWR SYSTEM
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
DAUGHTER LCD WVGA I.MX51
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM BOARD MPC5125
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
KIT EVALUATION I.MX51
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
KIT DEVELOPMENT WINCE IMX25
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM KIT MPC5125
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM BOARD K40X256
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
TOWER SYSTEM KIT K40X256
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
Microcontrollers (MCU) MX28 PLATFORM DEV KIT
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
MCU, MPU & DSP Development Tools IAR KickStart Kit for Kinetis K60
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
24BIT HDMI MX535/08
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: