MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 205

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MC68376BGMAB20

Manufacturer Part Number
MC68376BGMAB20
Description
IC MCU 32BIT 8K ROM 160-QFP
Manufacturer
Freescale Semiconductor
Series
M683xxr
Datasheets

Specifications of MC68376BGMAB20

Core Processor
CPU32
Core Size
32-Bit
Speed
20MHz
Connectivity
CAN, EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
18
Program Memory Type
ROMless
Ram Size
7.5K x 8
Voltage - Supply (vcc/vdd)
4.75 V ~ 5.25 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
160-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68376BGMAB20
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
MC68336/376
USER’S MANUAL
• External trigger rising or falling edge continuous-scan mode
• Periodic timer continuous-scan mode
— This mode keeps the result registers updated more frequently than any of the
— This mode may be chosen for either queue, but is normally used only with
— The QADC provides external trigger pins for both queues. When this mode is
— In addition to the previous modes, queue 2 can also be programmed for the
— The QADC includes a dedicated periodic/interval timer for initiating a scan
— When this mode is selected, the timer begins counting. After the programmed
— The periodic timer generates a trigger event whenever the time interval
— If the queue completion interrupt is enabled when using this mode, software
other queue operating modes. Software can always read the result table to get
the latest converted value for each channel. The channels scanned are kept
up to date by the QADC without software involvement.
queue 2. When the software initiated continuous-scan mode is chosen for
queue 1, that queue operates continuously and queue 2, being lower in prior-
ity, never gets executed. The short interval of time between a queue 1 pause
and the internally generated trigger event, or between a queue 1 completion
and the subsequent trigger event is not sufficient to allow queue 2 execution
to begin.
selected, a transition on the associated external trigger pin initiates queue ex-
ecution. The external trigger is programmable, so that queue execution can
begin on either a rising or a falling edge. Each CCW is read and the indicated
conversions are performed until an end-of-queue condition is encountered.
When the next external trigger edge is detected, queue execution begins
again automatically. Software initialization is not needed between trigger
events.
periodic timer continuous-scan mode, where a scan is initiated at a selectable
time interval using the on-chip periodic/interval timer. The queue operating
mode for queue 2 is selected by the MQ2 field in QACR2.
sequence for queue 2 only. A programmable timer interval can be selected
ranging from 2
interval elapses, the timer generated trigger event starts the queue. The timer
is then reloaded and begins counting again. Meanwhile, the QADC automati-
cally performs the conversions in the queue until an end-of-queue condition or
a pause is encountered. When a pause is encountered, the QADC waits for
the periodic interval to expire again, then continues with the queue. When an
end-of-queue is encountered, the next trigger event causes queue execution
to begin again with the first CCW in queue 2.
elapses. The trigger event may cause queue execution to continue following
a pause or queue completion, or may be considered a trigger overrun. As with
all continuous-scan queue operating modes, software action is not needed be-
tween trigger events.
can read the analog results that have just been collected. Software can use
this interrupt to obtain non-analog inputs as well, as part of a periodic look at
all inputs.
QUEUED ANALOG-TO-DIGITAL CONVERTER MODULE
7
to 2
17
times the QCLK period in binary multiples.
MOTOROLA
8-23

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