MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 133
MC68HC705V12CFN
Manufacturer Part Number
MC68HC705V12CFN
Description
The Motorola microcontroller
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC705V12CFN.pdf
(248 pages)
- Current page: 133 of 248
- Download datasheet (2Mb)
13.4 Digital Section
13.4.1 Conversion Times
13.4.2 Internal and Master Oscillators
13.4.3 Multi-Channel Operation
MC68HC705V12
MOTOROLA
—
Rev. 3.0
This subsection describes the digital section.
Each channel of conversion takes 32 clock cycles, which must be at a
frequency equal to or greater than 1 MHz.
If the MCU bus (f
oscillator (nominally 1.5 MHz) must be used for the A/D conversion
clock. This selection is made by setting the ADRC bit in the A/D status
and control registers to 1. In stop mode, the internal RC oscillator is
turned off automatically, although the A/D subsystem remains enabled
(ADON remains set). In wait mode the A/D subsystem remains
functional. See
When the internal RC oscillator is being used as the conversion clock,
three limitations apply:
A multiplexer allows the A/D converter to select one of five external
analog signals and four internal reference sources.
1. The conversion complete flag (COCO) must be used to determine
2. The conversion process runs at the nominal 1.5 MHz rate, but the
3. If the system clock is running faster than the RC oscillator, the RC
when a conversion sequence has been completed, due to the
frequency tolerance of the RC oscillator and its asynchronism with
regard to the MCU bus clock.
conversion results must be transferred to the MCU result registers
synchronously with the MCU bus clock so conversion time is
limited to a maximum of one channel per bus cycle.
oscillator should be turned off and the system clock used as the
conversion clock.
Analog-to-Digital (A/D) Converter
13.7 A/D during Wait
OP
) frequency is less than 1.0 MHz, an internal RC
Mode.
Analog-to-Digital (A/D) Converter
Advance Information
Digital Section
133
Related parts for MC68HC705V12CFN
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
HCMOS Microcontroller Unit
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
6367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
MC1494LMotorola, Inc [MONOLITHIC FOUR-QUADRANT MULTIPLIER]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC1466LMotorola, Inc [PRECISION WIDE RANGE VOLTAGE AND CURRENT REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC145532DWMotorola, Inc [ADPCM Transcoder]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Silicon Controlled Rectifiers
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF Power Field Effect Transistors N-Channel Enhancement-Mode Lateral MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTORS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
LATERAL N-CHANNEL BROADBAND RF POWER MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF LOW POWER TRANSISTOR NPN SILICON
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
PLASTIC SURFACE MOUNT ZENER DIODES 1.5 WATTS 3.3-68 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
OVERVOLTAGE TRANSIENT SUPPRESSOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET 15 AMPERES 60 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet: