PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 530
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PIC18F25J50
Manufacturer Part Number
PIC18F25J50
Description
28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F25J50.pdf
(562 pages)
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PIC18F46J50 FAMILY
TABLE 30-32: A/D CONVERSION REQUIREMENTS
FIGURE 30-24:
TABLE 30-33: USB LOW-SPEED TIMING REQUIREMENTS
TABLE 30-34: USB FULL-SPEED REQUIREMENTS
DS39931D-page 530
130
131
132
135
137
Note 1:
Param
Param
Param
No.
No.
No.
2:
3:
4:
T
T
T
T
T
Symbol
T
T
T
T
T
T
AD
CNV
ACQ
SWC
DIS
Symbol
Symbol
LR
LF
LRFM
FR
FF
FRFM
The time of the A/D clock period is dependent on the device frequency and the T
ADRES registers may be read on the following T
The time for the holding capacitor to acquire the “New” input voltage when the voltage changes full scale
after the conversion (V
On the following cycle of the device clock.
A/D Clock Period
Conversion Time
(not including acquisition time)
Acquisition Time
Switching Time from Convert Sample
Discharge Time
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
USB SIGNAL TIMING
90%
10%
V
CRS
Characteristic
Characteristic
Characteristic
DD
(3)
to V
SS
or V
USB Data Differential Lines
SS
(2)
to V
T
LR
, T
DD
FR
). The source impedance (R
CY
Min
Min
75
75
80
90
4
4
cycle.
Min
0.7
1.4
0.2
11
—
Typ
Typ
—
—
—
—
—
—
(Note 4)
25.0
Max
12
—
—
(1)
111.1
T
Max
Max
300
300
125
20
20
LF
Units
, T
T
s
s
s
AD
FF
S
2011 Microchip Technology Inc.
) on the input channels is 50.
Units
Units
T
-40C to +85C
ns
ns
ns
ns
%
%
OSC
AD
based, V
clock divider.
C
C
C
C
L
L
L
L
Conditions
= 200 to 600 pF
= 200 to 600 pF
= 50 pF
= 50 pF
Conditions
Conditions
REF
3.0V
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