All of the device pins (except V
參數(shù)資料
型號: DSPIC30F3012-20I/SO
廠商: Microchip Technology
文件頁數(shù): 133/161頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 24K 18SOIC
產(chǎn)品培訓模塊: Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
標準包裝: 42
系列: dsPIC™ 30F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 20 MIPS
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 12
程序存儲器容量: 24KB(8K x 24)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.5 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 8x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
包裝: 管件
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
AC30F005-ND - MODULE SCKT DSPIC30F 18DIP/SOIC
其它名稱: DSPIC30F301220ISO
2010 Microchip Technology Inc.
DS70139G-page 59
dsPIC30F2011/2012/3012/3013
7.0
I/O PORTS
All of the device pins (except VDD, VSS, MCLR and
OSC1/CLKI) are shared between the peripherals and
the parallel I/O ports.
All I/O input ports feature Schmitt Trigger inputs for
improved noise immunity.
7.1
Parallel I/O (PIO) Ports
When a peripheral is enabled and the peripheral is
actively driving an associated pin, the use of the pin as
a general purpose output pin is disabled. The I/O pin
can be read, but the output driver for the parallel port bit
is disabled. If a peripheral is enabled, but the peripheral
is not actively driving a pin, that pin can be driven by a
port.
All port pins have three registers directly associated
with the operation of the port pin. 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 (LATx). Reads from
the port (PORTx), read the port pins and writes to the
port pins, write the latch (LATx).
Any bit and its associated data and Control registers
that are not valid for a particular device are disabled.
That means the corresponding LATx and TRISx
registers and the port pin read as zeros.
When a pin is shared with another peripheral or
function that is defined as an input only, it is
nevertheless regarded as a dedicated port because
there is no other competing source of outputs.
A parallel I/O (PIO) port that shares a pin with a
peripheral is, in general, subservient to the peripheral.
The peripheral’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 pad cell. Figure 7-1 illustrates how ports are
shared with other peripherals and the associated I/O
cell (pad) to which they are connected.
The format of the registers for the shared ports,
(PORTB, PORTC, PORTD and PORTF) are shown in
FIGURE 7-1:
BLOCK DIAGRAM OF A SHARED PORT STRUCTURE
Note:
This data sheet summarizes features of
this group of dsPIC30F devices and is not
intended to be a complete reference
source. For more information on the CPU,
peripherals,
register
descriptions
and
general device functionality, refer to the
“dsPIC30F Family Reference Manual”
(DS70046).
Note:
The actual bits in use vary between
devices.
Q
D
CK
WR LAT +
TRIS Latch
I/O Pad
WR Port
Data Bus
Q
D
CK
Data Latch
Read LAT
Read Port
Read TRIS
1
0
1
0
WR TRIS
Peripheral Output Data
Output Enable
Peripheral Input Data
I/O Cell
Peripheral Module
Peripheral Output Enable
PIO Module
Output Multiplexers
Output Data
Input Data
Peripheral Module Enable
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