AC164139 Microchip Technology, AC164139 Datasheet - Page 242
![Graphics Display Prototype Board Graphics](/photos/28/36/283699/ac164139_sml.jpg)
AC164139
Manufacturer Part Number
AC164139
Description
Graphics Display Prototype Board Graphics
Manufacturer
Microchip Technology
Specifications of AC164139
Main Purpose
LCD Development
Embedded
No
Utilized Ic / Part
PICtail™ Plus Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Primary Attributes
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AC164139
Manufacturer:
Microchip Technology
Quantity:
135
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PIC24FJ256DA210 FAMILY
18.1.2
18.1.2.1
PIC24FJ256DA210 family devices have a built-in
15 k pull-down resistor on the D+ and D- lines. These
are used in tandem to signal to the bus that the micro-
controller is operating in Host mode. They are engaged
by setting the HOSTEN bit (U1CON<3>). If the OTGEN
bit (U1OTGCON<2>) is set, then these pull-downs are
enabled by setting the DPPULDWN and DMPULDWN
bits (U1OTGCON<5:4>).
18.1.2.2
In Host mode, as well as Host mode in On-The-Go
operation, the USB 2.0 Specification requires that the
host application should supply power on V
FIGURE 18-6:
FIGURE 18-7:
DS39969B-page 242
HOST AND OTG MODES
D+ and D- Pull-Down Resistors
Power Configurations
Connector
Micro A/B
Connector
Micro A/B
V
GND
BUS
D+
HOST INTERFACE EXAMPLE
OTG INTERFACE EXAMPLE
D-
V
ID
GND
BUS
D+
D-
ID
4.7 µF
150 µF
1 µF
40 k
BUS
Thermal Fuse
Polymer PTC
. Since
2 k
2 k
GND
C+
C-
V
OUT
MCP1253
SELECT
PGOOD
SHND
+5V
0.1 µF,
3.3V
V
IN
the microcontroller is running below V
able to source sufficient current, a separate power
supply must be provided.
When the application is always operating in Host mode,
a simple circuit can be used to supply V
late current on the bus (Figure 18-6). For OTG opera-
tion, it is necessary to be able to turn V
needed, as the microcontroller switches between
Device and Host modes. A typical example using an
external charge pump is shown in Figure 18-7.
+3.3V +3.3V
V
DD
10 µF
V
V
A/D Pin
V
D+
D-
ID
V
USB
PIC
DD
BUS
SS
I/O
I/O
V
D+
D-
ID
V
PIC
BUS
SS
®
MCU
®
MCU
2010 Microchip Technology Inc.
BUS
BUS
BUS
, and is not
on or off as
and regu-
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