PIC24FJ256GB106T-I/PT Microchip Technology, PIC24FJ256GB106T-I/PT Datasheet - Page 140
![IC PIC MCU FLASH 256K 64-TQFP](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC24FJ256GB106T-I/PT
Manufacturer Part Number
PIC24FJ256GB106T-I/PT
Description
IC PIC MCU FLASH 256K 64-TQFP
Manufacturer
Microchip Technology
Series
PIC® 24Fr
Datasheets
1.PIC24FJ128GA106-IPT.pdf
(52 pages)
2.PIC24FJ64GB106-IPT.pdf
(16 pages)
3.PIC24FJ64GB106-IPT.pdf
(352 pages)
Specifications of PIC24FJ256GB106T-I/PT
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
51
Program Memory Size
256KB (85.5K x 24)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
For Use With
DM240011 - KIT STARTER MPLAB FOR PIC24F MCUMA240014 - MODULE PLUG-IN PIC24
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC24FJ256GB106T-I/PTTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC24FJ256GB106T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC24FJ128GA106-IPT PDF datasheet
- PIC24FJ64GB106-IPT PDF datasheet #2
- PIC24FJ64GB106-IPT PDF datasheet #3
- Current page: 140 of 352
- Download datasheet (3Mb)
PIC24FJ256GB110 FAMILY
10.4.5
The ability to control peripheral pin selection introduces
several considerations into application design that
could be overlooked. This is particularly true for several
common peripherals that are available only as
remappable peripherals.
The main consideration is that the Peripheral Pin
Selects are not available on default pins in the device’s
default (Reset) state. Since all RPINRx registers reset
to ‘111111’ and all RPORx registers reset to ‘000000’,
all Peripheral Pin Select inputs are tied to V
Peripheral Pin Select outputs are disconnected.
This situation requires the user to initialize the device
with the proper peripheral configuration before any
other application code is executed. Since the IOLOCK
bit resets in the unlocked state, it is not necessary to
execute the unlock sequence after the device has
come out of Reset. For application safety, however, it is
best to set IOLOCK and lock the configuration after
writing to the control registers.
Because the unlock sequence is timing-critical, it must
be executed as an assembly language routine in the
same manner as changes to the oscillator configura-
tion. If the bulk of the application is written in C or
another high-level language, the unlock sequence
should be performed by writing in-line assembly.
Choosing the configuration requires the review of all
Peripheral Pin Selects and their pin assignments,
especially those that will not be used in the application.
In all cases, unused pin-selectable peripherals should
be disabled completely. Unused peripherals should
have their inputs assigned to an unused RPn pin
function. I/O pins with unused RPn functions should be
configured with the null peripheral output.
The assignment of a peripheral to a particular pin does
not automatically perform any other configuration of the
pin’s I/O circuitry. In theory, this means adding a
pin-selectable output to a pin may mean inadvertently
driving an existing peripheral input when the output is
driven. Users must be familiar with the behavior of
other fixed peripherals that share a remappable pin and
know when to enable or disable them. To be safe, fixed
digital peripherals that share the same pin should be
disabled when not in use.
DS39897C-page 140
Note:
CONSIDERATIONS FOR
PERIPHERAL PIN SELECTION
In tying Peripheral Pin Select inputs to
RP63, RP63 does not have to exist on a
device for the registers to be reset to it.
SS
, and all
feature on. The peripheral must be specifically config-
Along these lines, configuring a remappable pin for a
specific peripheral does not automatically turn that
ured for operation and enabled, as if it were tied to a fixed
pin. Where this happens in the application code (immedi-
ately following device Reset and peripheral configuration
or inside the main application routine) depends on the
peripheral and its use in the application.
A final consideration is that Peripheral Pin Select func-
tions neither override analog inputs, nor reconfigure
pins with analog functions for digital I/O. If a pin is
configured as an analog input on device Reset, it must
be explicitly reconfigured as digital I/O when used with
a Peripheral Pin Select.
Example 10-2 shows a configuration for bidirectional
communication with flow control using UART1. The
following input and output functions are used:
• Input Functions: U1RX, U1CTS
• Output Functions: U1TX, U1RTS
EXAMPLE 10-2:
// Unlock Registers
__builtin_write_OSCCONL(OSCCON & 0xBF);
// Configure Input Functions (Table 9-1))
// Configure Output Functions (Table 9-2)
// Lock Registers
__builtin_write_OSCCONL(OSCCON | 0x40);
// Assign U1RX To Pin RP0
RPINR18bits.U1RXR = 0;
// Assign U1CTS To Pin RP1
RPINR18bits.U1CTSR = 1;
// Assign U1TX To Pin RP2
RPOR1bits.RP2R = 3;
// Assign U1RTS To Pin RP3
RPOR1bits.RP3R = 4;
CONFIGURING UART1
INPUT AND OUTPUT
FUNCTIONS
2009 Microchip Technology Inc.
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