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参数资料
型号： DSPIC30F3012-30I/SO
厂商： Microchip Technology
文件页数： 65/161页
文件大小： 0K
描述： IC DSPIC MCU/DSP 24K 18SOIC
产品培训模块： 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
标准包装： 42
系列： dsPIC™ 30F
核心处理器： dsPIC
芯体尺寸： 16-位
速度： 30 MIP
连通性： I²C，SPI，UART/USART
外围设备： 欠压检测/复位，POR，PWM，WDT
输入/输出数： 12
程序存储器容量： 24KB（8K x 24）
程序存储器类型： 闪存
EEPROM 大小： 1K x 8
RAM 容量： 2K x 8
电压 - 电源 (Vcc/Vdd)： 2.5 V ~ 5.5 V
数据转换器： A/D 8x12b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 18-SOIC（0.295"，7.50mm 宽）
包装： 管件
产品目录页面： 651 (CN2011-ZH PDF)
配用： XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
AC30F005-ND - MODULE SCKT DSPIC30F 18DIP/SOIC
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称： DSPIC30F301230ISO
2011 Microchip Technology Inc.
DS39932D-page 187
PIC18F46J11 FAMILY
11.3.5
CHIP SELECT FEATURES
One chip select line, PMCS, is available for the Master
modes of the PMP. The chip select line is multiplexed
with the second Most Significant bit (MSb) of the
address bus (PMADDRH<6>). When configured for
chip select, the PMADDRH<7:6> bits are not included
in any address auto-increment/decrement. The
function of the chip select signal is configured using the
chip select function bits (PMCONL<7:6>).
11.3.6
AUTO-INCREMENT/DECREMENT
While the module is operating in one of the Master
modes, the INCMx bits (PMMODEH<4:3>) control the
behavior of the address value. The address can be
made to automatically increment or decrement after
each read and write operation. The address increments
once each operation is completed and the BUSY bit
goes to ‘0’. If the chip select signals are disabled and
configured as address bits, the bits will participate in
the increment and decrement operations; otherwise,
the CS1 bit values will be unaffected.
11.3.7
WAIT STATES
In Master mode, the user has control over the duration
of the read, write and address cycles by configuring the
module Wait states. Three portions of the cycle, the
beginning, middle and end, are configured using the
corresponding WAITBx, WAITMx and WAITEx bits in
the PMMODEL register.
The WAITBx bits (PMMODEL<7:6>) set the number of
Wait cycles for the data setup prior to the
PMRD/PMWT strobe in Mode 10, or prior to the
PMENB strobe in Mode 11. The WAITMx bits
(PMMODEL<5:2>) set the number of Wait cycles for
the PMRD/PMWT strobe in Mode 10, or for the PMENB
strobe in Mode 11. When this Wait state setting is ‘0’,
then WAITB and WAITE have no effect. The WAITE
bits (PMMODEL<1:0>) define the number of Wait
cycles for the data hold time after the PMRD/PMWT
strobe in Mode 10, or after the PMENB strobe in
Mode 11.
11.3.8
READ OPERATION
To perform a read on the PMP, the user reads the
PMDIN1L register. This causes the PMP to output the
desired values on the chip select lines and the address
bus. Then the read line (PMRD) is strobed. The read
data is placed into the PMDIN1L register.
If the 16-bit mode is enabled (MODE16 = 1), the read
of the low byte of the PMDIN1L register will initiate two
bus reads. The first read data byte is placed into the
PMDIN1L register, and the second read data is placed
into the PMDIN1H.
Note that the read data obtained from the PMDIN1L
register is actually the read value from the previous
read operation. Hence, the first user read will be a
dummy read to initiate the first bus read and fill the read
register. Also, the requested read value will not be
ready until after the BUSY bit is observed low. Thus, in
a back-to-back read operation, the data read from the
register will be the same for both reads. The next read
of the register will yield the new value.
11.3.9
WRITE OPERATION
To perform a write onto the parallel bus, the user writes
to the PMDIN1L register. This causes the module to
first output the desired values on the chip select lines
and the address bus. The write data from the PMDIN1L
register is placed onto the PMD<7:0> data bus. Then
the write line (PMWR) is strobed. If the 16-bit mode is
enabled (MODE16 = 1), the write to the PMDIN1L
register will initiate two bus writes. The first write will
consist of the data contained in PMDIN1L and the
second write will contain the PMDIN1H.
11.3.10
PARALLEL MASTER PORT STATUS
11.3.10.1
The BUSY Bit
In addition to the PMP interrupt, a BUSY bit is provided
to indicate the status of the module. This bit is used
only in Master mode. While any read or write operation
is in progress, the BUSY bit is set for all but the very last
CPU cycle of the operation. In effect, if a single-cycle
read or write operation is requested, the BUSY bit will
never be active. This allows back-to-back transfers.
While the bit is set, any request by the user to initiate a
new operation will be ignored (i.e., writing or reading
the lower byte of the PMDIN1L register will neither
initiate a read nor a write).
11.3.10.2
Interrupts
When the PMP module interrupt is enabled for Master
mode, the module will interrupt on every completed
read or write cycle; otherwise, the BUSY bit is available
to query the status of the module.
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