PIC18F6585-I/PT Microchip Technology Inc., PIC18F6585-I/PT Datasheet - Page 265
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PIC18F6585-I/PT
Manufacturer Part Number
PIC18F6585-I/PT
Description
64 PIN, 48 KB FLASH, 3328 RAM, 52 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F6585-IPT.pdf
(496 pages)
Specifications of PIC18F6585-I/PT
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
1024 Bytes
Input Output
53
Interface
CAN/I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
64-pin TQFP
Programmable Memory
48K Bytes
Ram Size
3.3K Bytes
Speed
40 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Company:
Part Number:
PIC18F6585-I/PT
Manufacturer:
Microchip Technology
Quantity:
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Part Number:
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20.7
When a comparator is active and the device is placed
in Sleep mode, the comparator remains active and the
interrupt is functional if enabled. This interrupt will
wake-up the device from Sleep mode when enabled.
While the comparator is powered up, higher Sleep
currents than shown in the power-down current
specification will occur. Each operational comparator
will consume additional current as shown in the com-
parator specifications. To minimize power consumption
while in Sleep mode, turn off the comparators
(CM<2:0> = 111) before entering Sleep. If the device
wakes up from Sleep, the contents of the CMCON
register are not affected.
20.8
A device Reset forces the CMCON register to its Reset
state, causing the comparator module to be in the
Comparator Reset mode (CM<2:0> = 000). This
ensures that all potential inputs are analog inputs.
Device current is minimized when analog inputs are
present at Reset time. The comparators will be
powered down during the Reset interval.
FIGURE 20-4:
2004 Microchip Technology Inc.
Comparator Operation During
Sleep
Effects of a Reset
VA
Legend:
R
S
< 10k
COMPARATOR ANALOG INPUT MODEL
C
V
I
R
R
VA
A
LEAKAGE
PIN
T
IC
S
IN
C
5 pF
PIN
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to various junctions
= Interconnect Resistance
= Source Impedance
= Analog Voltage
PIC18F6585/8585/6680/8680
V
DD
V
V
T
T
= 0.6V
= 0.6V
20.9
A simplified circuit for an analog input is shown in
Figure 20-4. Since the analog pins are connected to a
digital output, they have reverse biased diodes to V
and V
V
range by more than 0.6V in either direction, one of the
diodes is forward biased and a latch-up condition may
occur. A maximum source impedance of 10 k
recommended for the analog sources. Any external
component connected to an analog input pin, such as
a capacitor or a Zener diode, should have very little
leakage current.
SS
and V
SS
. The analog input, therefore, must be between
Analog Input Connection
Considerations
I
±500 nA
V
LEAKAGE
DD
SS
. If the input voltage deviates from this
R
IC
Comparator
Input
DS30491C-page 263
DD
is
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