MC68332GCEH16 Freescale Semiconductor, MC68332GCEH16 Datasheet - Page 163

• Manufacturer Part Number: MC68332GCEH16
• Description: IC MCU 32BIT 16MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68332GCEH16

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 16MHz
• Interface Type: QSPI/SCI/UART
• Program Memory Size: Not Required
• Total Internal Ram Size: 2KB
• # I/os (max): 15
• Number Of Timers - General Purpose: 16
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 132
• Package Type: PQFP
• Controller Family/series: 68K
• No. Of I/o's: 15
• Ram Memory Size: 2KB
• Cpu Speed: 16MHz
• No. Of Timers: 16
• Embedded Interface Type: QSPI, SCI, UART
• Digital Ic Case Style: PQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Data Ram Size: 2 KB
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 16
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Compliant

7.4.11 Quadrature Decode (QDEC)
7.5 Motion Control Time Functions
7.5.1 Table Stepper Motor (TSM)
7.5.2 New Input Capture/Transition Counter (NITC)
MC68332
USER’S MANUAL
allowing the latest complete accumulation (over the specified number of periods) to al-
ways be available in a parameter. By using the output compare function in conjunction
with PPWA, an output signal can be generated that is proportional to a specified input
signal. The ratio of the input and output frequency is programmable. One or more out-
put signals with different frequencies, yet proportional and synchronized to a single in-
put signal, can be generated on separate channels.
The quadrature decode function uses two channels to decode a pair of out-of-phase
signals in order to present the CPU with directional information and a position value.
It is particularly suitable for use with slotted encoders employed in motor control. The
function derives full resolution from the encoder signals and provides a 16-bit position
counter with rollover/under indication via an interrupt.
The counter in parameter RAM is updated when a valid transition is detected on either
one of the two inputs. The counter is incremented or decremented depending on the
lead/lag relationship of the two signals at the time of servicing the transition. The user
can read or write the counter at any time. The counter is free running, overflowing to
$0000 or underflowing to $FFFF depending on direction. The QDEC function also pro-
vides a time stamp referenced to TCR1 for every valid signal edge and the ability for
the host CPU to obtain the latest TCR1 value. This feature allows position interpolation
by the host CPU between counts at very slow count rates.
The following paragraphs describe factory-programmed time functions implemented
in the motion-control microcode ROM. A complete description of the functions is be-
yond the scope of this manual. Refer to the TPU Reference Manual (TPURM/AD) for
additional information.
The TSM function provides for acceleration and deceleration control of a stepper mo-
tor with a programmable number of step rates up to 58. TSM uses a table in parameter
RAM, rather than an algorithm, to define the stepper motor acceleration profile, allow-
ing the user to fully define the profile. In addition, a slew rate parameter allows fine
control of the terminal running speed of the motor independent of the acceleration ta-
ble. The CPU need only write a desired position, and the TPU accelerates, slews, and
decelerates the motor to the required position. Full and half step support is provided
for two-phase motors. In addition, a slew rate parameter allows fine control of the ter-
minal running speed of the motor independent of the acceleration table.
Any channel of the TPU can capture the value of a specified TCR or any specified lo-
cation in parameter RAM upon the occurrence of each transition or specified number
of transitions, and then generate an interrupt request to notify the bus master. The
times of the most recent two transitions are maintained in parameter RAM. A channel
can perform input captures continually, or a channel can detect a single transition or
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TIME PROCESSOR UNIT
7-9