XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 136
XC68HC705JJ7
Manufacturer Part Number
XC68HC705JJ7
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC705JJ7.pdf
(242 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
XC68HC705JJ7CP
Manufacturer:
ON
Quantity:
6 233
Part Number:
XC68HC705JJ7CP
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
- Current page: 136 of 242
- Download datasheet (3Mb)
Analog Subsystem
8.7.2.2 External Ratiometric Reference
8.8 Voltage Comparator Features
8.8.1 Voltage Comparator 1
Advance Information
136
If readings are to be ratiometric to some external source, the reference
measurement point can be connected to any one of the channel selected
pins from PB1–PB4. In this case, the reference reading can be taken by
setting the MUX bit in the AMUX which connects channel selection bus
to the pin connected to the external reference source. If the external
reference is greater than V
used to select the 1/2 divided input.
The two internal comparators can be used as simple voltage
comparators if set up as described in
be active in the wait mode and can directly restart the part by means of
the analog interrupt. Both comparators can also be active in the stop
mode, but cannot directly restart the part. However, the comparators can
directly drive PB4 which can then be connected externally to activate
either a port interrupt on the PA0:3 pins or the IRQ/V
Voltage comparator 1 is always connected to two of the port B I/O pins.
These pins should be configured as inputs and have their software
programmable pulldowns disabled. Also, the negative input of voltage
comparator 1 is connected to the PB3/AN3/TCAP and shared with the
input capture function of the 16-bit programmable timer. Therefore, the
timer input capture interrupt should be disabled so that changes in the
Comparator
1
2
Table 8-8. Voltage Comparator Setup Conditions
ISEN = 0
Current
affected
Source
Enable
Not
Analog Subsystem
Discharge
ISEN = 0
Disable
affected
Device
Not
DD
–1.5 volts, then the DHOLD bit should be
MC68HC705JJ7 • MC68HC705JP7 — REV 4
DDRB2 = 0
DDRB3 = 0
DDRB0 = 0
DDRB1 = 0
Port B Pin
as Inputs
Table
8-8. Both comparators can
Pulldowns
Port B Pin
PDIB2 = 1
PDIB3 = 1
PDIB0 = 1
PDIB1 = 1
Disabled
PP
pin.
Prog. Timer
IEDG = 1
ICEN = 0
Capture
affected
Source
MOTOROLA
Input
Not
Related parts for XC68HC705JJ7
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
3N2046367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MOTOROLA POWERPC 603e MICROPROCESSOR
Manufacturer:
Motorola
Part Number:
Description:
Motorola Semiconductor Datasheet Library
Manufacturer:
Motorola
Part Number:
Description:
SWITCHMODE Schottky Power Rectifier(POWERTAP III Package)
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
SWITCHMODE Schottky Power Rectifirer
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Search -----> MTE53N50E
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
SCHOTTKY BARRIER RECTIFIER 200 AMPERES 60 VOLT
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
NPN SILICON POWER DARLINGTON TRANSISTOR
Manufacturer:
Motorola
Datasheet: