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| 鍨嬭櫉(h脿o)锛� | PIC18F45J11-I/ML |
| 寤犲晢锛� | Microchip Technology |
| 鏂囦欢闋�(y猫)鏁�(sh霉)锛� | 220/228闋�(y猫) |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC PIC MCU FLASH 32K 2V 44-QFN |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | XLP Deep Sleep Mode PIC18 J Series MCU Overview 8-bit PIC® Microcontroller Portfolio |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 45 |
| 绯诲垪锛� | PIC® XLP™ 18F |
| 鏍稿績铏曠悊鍣細 | PIC |
| 鑺珨灏哄锛� | 8-浣� |
| 閫熷害锛� | 48MHz |
| 閫ｉ€氭€э細 | I²C锛孲PI锛孶ART/USART |
| 澶栧湇瑷�(sh猫)鍌欙細 | 娆犲妾㈡脯(c猫)/寰�(f霉)浣�锛孭OR锛孭WM锛學DT |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 34 |
| 绋嬪簭瀛樺劜(ch菙)鍣ㄥ閲忥細 | 32KB锛�16K x 16锛� |
| 绋嬪簭瀛樺劜(ch菙)鍣ㄩ鍨嬶細 | 闁冨瓨 |
| RAM 瀹归噺锛� | 3.8K x 8 |
| 闆诲 - 闆绘簮 (Vcc/Vdd)锛� | 2.15 V ~ 3.6 V |
| 鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� | A/D 13x10b |
| 鎸暕鍣ㄥ瀷锛� | 鍏�(n猫i)閮� |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 灏佽/澶栨锛� | 44-VQFN 瑁搁湶鐒婄洡 |
| 鍖呰锛� | 绠′欢 |
| 鐢�(ch菐n)鍝佺洰閷勯爜(y猫)闈細 | 657 (CN2011-ZH PDF) |
| 閰嶇敤锛� | AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN |
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2010 Microchip Technology Inc.
DS70138G-page 91
dsPIC30F3014/4013
14.0
I2C MODULE
The Inter-Integrated Circuit (I2CTM) module provides
complete hardware support for both Slave and Multi-
Master modes of the I2C serial communication
standard with a 16-bit interface.
This module offers the following key features:
I2C interface supporting both master and slave
operation.
I2C Slave mode supports 7-bit and 10-bit address-
ing.
I2C Master mode supports 7-bit and 10-bit
addressing.
I2C port allows bidirectional transfers between
master and slaves.
Serial clock synchronization for I2C port can be
used as a handshake mechanism to suspend and
resume serial transfer (SCLREL control).
I2C supports multi-master operation; detects bus
collision and arbitrates accordingly.
14.1
Operating Function Description
The hardware fully implements all the master and slave
functions of the I2C Standard and Fast mode
specifications, as well as 7 and 10-bit addressing.
Thus, the I2C module can operate either as a slave or
a master on an I2C bus.
14.1.1
VARIOUS I2C MODES
The following types of I2C operation are supported:
I2C slave operation with 7-bit addressing
I2C slave operation with 10-bit addressing
I2C master operation with 7-bit or 10-bit addressing
14.1.2
PIN CONFIGURATION IN I2C MODE
I2C has a 2-pin interface: the SCL pin is clock and the
SDA pin is data.
14.1.3
I2C REGISTERS
I2CCON and I2CSTAT are control and status registers,
respectively. The I2CCON register is readable and writ-
able. The lower 6 bits of I2CSTAT are read-only. The
remaining bits of the I2CSTAT are read/write.
I2CRSR is the shift register used for shifting data,
whereas I2CRCV is the buffer register to which data
bytes are written, or from which data bytes are read.
I2CRCV is the receive buffer as shown in Figure 14-1.
I2CTRN is the transmit register to which bytes are
written during a transmit operation, as shown in
The I2CADD register holds the slave address. A status
bit, ADD10, indicates 10-Bit Addressing mode. The
I2CBRG acts as the Baud Rate Generator reload
value.
In receive operations, I2CRSR and I2CRCV together
form a double-buffered receiver. When I2CRSR
receives a complete byte, it is transferred to I2CRCV
and
an
interrupt
pulse
is
generated.
During
transmission, the I2CTRN is not double-buffered.
FIGURE 14-1:
PROGRAMMER鈥橲 MODEL
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:
Following a Restart condition in 10-bit
mode, the user only needs to match the
first 7-bit address.
Bit 7
Bit 0
I2CRCV (8 bits)
Bit 7
Bit 0
I2CTRN (8 bits)
Bit 8
Bit 0
I2CBRG (9 bits)
Bit 15
Bit 0
I2CCON (16 bits)
Bit 15
Bit 0
I2CSTAT (16 bits)
Bit 9
Bit 0
I2CADD (10 bits)
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