PIC24HJ64GP510A-E/PF Microchip Technology, PIC24HJ64GP510A-E/PF Datasheet - Page 145

• Manufacturer Part Number: PIC24HJ64GP510A-E/PF
• Description: 16 Bit MCU 40MIPS 64KB FLASH 100 TQFP 14x14x1mm TRAY
• Manufacturer: Microchip Technology
• Series: PIC® 24Hr

Specifications of PIC24HJ64GP510A-E/PF

• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 64KB (22K x 24)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 32x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.0
All of the device pins (except V
OSC1/CLKIN) are shared between the peripherals and
the parallel I/O ports. All I/O input ports feature Schmitt
Trigger inputs for improved noise immunity.
11.1
A parallel I/O port that shares a pin with a peripheral is,
in general, subservient to the peripheral. The periph-
eral’s output buffer data and control signals are
provided to a pair of multiplexers. The multiplexers
select whether the peripheral or the associated port
has ownership of the output data and control signals of
the I/O pin. The logic also prevents “loop through”, in
FIGURE 11-1:
 2009 Microchip Technology Inc.
Note 1: This data sheet summarizes the features
2: Some registers and associated bits
I/O PORTS
Parallel I/O (PIO) Ports
of the PIC24HJXXXGPX06A/X08A/X10A
family of devices. However, it is not
intended
reference source. To complement the
information in this data sheet, refer to
Section 10. “I/O Ports” (DS70230) of
the “dsPIC33F/PIC24H Family Reference
Manual”, which is available from the
Microchip website (www.microchip.com).
described in this section may not be avail-
able on all devices. Refer to Section 4.0
“Memory Organization” in this data
sheet for device-specific register and bit
information.
Read TRIS
Data Bus
WR TRIS
WR LAT +
WR PORT
Read LAT
Read Port
BLOCK DIAGRAM OF A TYPICAL SHARED PORT STRUCTURE
to
Peripheral Module
Peripheral Input Data
Peripheral Module Enable
Peripheral Output Enable
Peripheral Output Data
be
PIO Module
PIC24HJXXXGPX06A/X08A/X10A
DD
TRIS Latch
a
Data Latch
D
D
CK
CK
, V
comprehensive
SS
Q
Q
, MCLR and
Preliminary
Output Multiplexers
which a port’s digital output can drive the input of a
peripheral that shares the same pin. Figure 11-1 shows
how ports are shared with other peripherals and the
associated I/O pin to which they are connected.
When a peripheral is enabled and actively driving an
associated pin, the use of the pin as a general purpose
output pin is disabled. The I/O pin may be read, but the
output driver for the parallel port bit will be disabled. If
a peripheral is enabled, but the peripheral is not
actively driving a pin, that pin may be driven by a port.
All port pins have three registers directly associated
with their operation as digital I/O. The data direction
register (TRISx) determines whether the pin is an input
or an output. If the data direction bit is a ‘1’, then the pin
is an input. All port pins are defined as inputs after a
Reset. Reads from the latch (LATx), read the latch.
Writes to the latch, write the latch. Reads from the port
(PORTx), read the port pins, while writes to the port
pins, write the latch.
Any bit and its associated data and control registers
that are not valid for a particular device will be
disabled. That means the corresponding LATx and
TRISx registers and the port pins will read as zeros.
When a pin is shared with another peripheral or func-
tion that is defined as an input only, it is nonetheless
regarded as a dedicated port because there is no other
competing source of outputs. An example is the INT4
pin.
1
1
0
0
Note:
Output Enable
Output Data
The voltage on a digital input pin can be
between -0.3V to 5.6V.
Input Data
I/O
I/O Pin
DS70592B-page 145