MC68340AG16E Freescale Semiconductor, MC68340AG16E Datasheet - Page 341
MC68340AG16E
Manufacturer Part Number
MC68340AG16E
Description
IC MPU 32BIT 16MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340AG16E
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Controller Family/series
68K
Core Size
32 Bit
No. Of I/o's
16
Cpu Speed
16MHz
No. Of Timers
2
Embedded Interface Type
UART
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Processor Series
M683xx
Core
CPU32
Maximum Clock Frequency
16 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
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7.5 SERIAL MODULE INITIALIZATION SEQUENCE
The following paragraphs discuss a suggested method for initializing the serial module.
7.5.1 Serial Module Configuration
If the serial capability of the MC68340 is being used, the following steps are required to
properly initialize the serial module.
Command Register (CR)
The following steps program both channels:
Module Configuration Register (MCR)
Interrupt Vector Register (IVR)
Interrupt Level Register (ILR)
Interrupt Enable Register (IER)
Auxiliary Control Register (ACR)
Output Port Control Register (OPCR)
Interrupt Status Register (ISR)
7-46
• Reset the receiver and transmitter for each channel.
• Initialize the stop bit (STP) for normal operation.
• Select whether to respond to or ignore FREEZE (FRZx bits).
• Select the input capture clock (ICCS bit).
• Select the access privilege for the supervisor/user registers (SUPV bit).
• Select the interrupt arbitration level for the serial module (IARBx bits).
• Program the vector number for a serial module interrupt.
• Program the interrupt priority level for a serial module interrupt.
• Enable the desired interrupt sources.
• Select baud rate set (BRG bit).
• Initialize the input enable control (IEC bits).
• Select the function of the output port pins.
• The XTAL_RDY bit should be polled until it is cleared to ensure that an unstable
crystal input is not applied to the baud rate generator.
The serial module registers can only be accessed by byte operations.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68340 USER’S MANUAL
Go to: www.freescale.com
NOTE
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