MC68F375BGMZP33 Freescale Semiconductor, MC68F375BGMZP33 Datasheet - Page 285

• Manufacturer Part Number: MC68F375BGMZP33
• Description: IC MPU 32BIT 33MHZ 217-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68F375BGMZP33

• Processor Type: M683xx 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 217-PBGA
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Program Memory Type: Flash
• Program Memory Size: 256 KB
• Data Ram Size: 10 KB
• Interface Type: SPI, SCI, CAN
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 16
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: No

6.8.7.2 Serial Formats
6.8.7.3 Baud Clock
MC68F375
REFERENCE MANUAL
All data frames must have a start bit and at least one stop bit. Receiving and transmit-
ting devices must use the same data frame format. The SCI provides hardware
support for both 10-bit and 11-bit frames. The M bit in SCCxR1 specifies the number
of bits per frame.
The most common data frame format for NRZ (non-return to zero) serial interfaces is
one start bit, eight data bits (LSB first), and one stop bit (ten bits total). The most com-
mon 11-bit data frame contains one start bit, eight data bits, a parity or control bit, and
one stop bit. Ten-bit and 11-bit frames are shown in
The SCI baud rate is programmed by writing a 13-bit value to the SCxBR field in SCI
control register zero (SCCxR0). The baud rate is derived from the MCU system clock
by a modulus counter. Writing a value of zero to SCxBR[12:0] disables the baud rate
generator. The baud rate is calculated as follows:
where SCxBR is in the range {1, 2, 3, ..., 8191}.
The SCI receiver operates asynchronously. An internal clock is necessary to synchro-
nize with an incoming data stream. The SCI baud rate generator produces a receive
time sampling clock with a frequency 16 times that of the SCI baud rate. The SCI deter-
• Break frame — A frame that consists of consecutive zeros. A break frame has no
bit.
stop bits.
Start
Start
1
1
1
1
1
Freescale Semiconductor, Inc.
QUEUED SERIAL MULTI-CHANNEL MODULE
For More Information On This Product,
Table 6-28 Serial Frame Formats
SCxBR
SCI Baud Rate
Go to: www.freescale.com
Data
Data
7
7
8
7
8
=
Rev. 25 June 03
11-Bit Frames
10-bit Frames
-------------------------------------------------------------------------- -
32 SCI Baud Rate Desired
Parity/Control
Parity/Control
or
=
f SYS
—
—
------------------------------- -
32 SCxBR
1
1
1
f SYS
Table
6-28.
Stop
Stop
2
1
1
2
1
MOTOROLA
6-51