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| 鍨嬭櫉(h脿o)锛� | PIC18F25K80-I/SS |
| 寤犲晢锛� | Microchip Technology |
| 鏂囦欢闋佹暩(sh霉)锛� | 253/351闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | MCU PIC 32KB FLASH 28SSOP |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | 8-bit PIC® Microcontroller Portfolio |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 47 |
| 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� | 64MHz |
| 閫ｉ€氭€э細 | ECAN锛孖²C锛孡IN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�锛孡VD锛孭OR锛孭WM锛學DT |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 24 |
| 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 |
| EEPROM 澶у皬锛� | 1K x 8 |
| RAM 瀹归噺锛� | 3.6K x 8 |
| 闆诲 - 闆绘簮 (Vcc/Vdd)锛� | 1.8 V ~ 5.5 V |
| 鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� | A/D 8x12b |
| 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� | 28-SSOP锛�0.209"锛�5.30mm 瀵級 |
| 鍖呰锛� | 绠′欢 |
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PIC18F66K80 FAMILY
DS39977F-page 326
2010-2012 Microchip Technology Inc.
21.4.14
SLEEP OPERATION
While in Sleep mode, the I2C module can receive
addresses or data and when an address match or
complete byte transfer occurs, wake the processor
from Sleep (if the MSSP interrupt is enabled).
21.4.15
EFFECTS OF A RESET
A Reset disables the MSSP module and terminates the
current transfer.
21.4.16
MULTI-MASTER MODE
In Multi-Master mode, the interrupt generation on the
detection of the Start and Stop conditions allows the
determination of when the bus is free. The Stop (P) and
Start (S) bits are cleared from a Reset or when the
MSSP module is disabled. Control of the I2C bus may
be taken when the P bit (SSPSTAT<4>) is set, or the
bus is Idle, with both the S and P bits clear. When the
bus is busy, enabling the MSSP interrupt will generate
the interrupt when the Stop condition occurs.
In multi-master operation, the SDA line must be
monitored for arbitration to see if the signal level is the
expected output level. This check is performed in
hardware with the result placed in the BCLIF bit.
The states where arbitration can be lost are:
Address Transfer
Data Transfer
A Start Condition
A Repeated Start Condition
An Acknowledge Condition
21.4.17
MULTI -MASTER COMMUNICATION,
BUS COLLISION AND BUS
ARBITRATION
Multi-Master mode support is achieved by bus arbitra-
tion. When the master outputs address/data bits onto
the SDA pin, arbitration takes place when the master
outputs a 鈥�1鈥� on SDA, by letting SDA float high, and
another master asserts a 鈥�0鈥�. When the SCL pin floats
high, data should be stable. If the expected data on
SDA is a 鈥�1鈥� and the data sampled on the SDA pin = 0,
then a bus collision has taken place. The master will set
the Bus Collision Interrupt Flag, BCLIF, and reset the
If a transmit was in progress when the bus collision
occurred, the transmission is halted, the BF flag is
cleared, the SDA and SCL lines are deasserted and the
SSPBUF can be written to. When the user services the
bus collision Interrupt Service Routine and if the I2C bus
is free, the user can resume communication by asserting
a Start condition.
If a Start, Repeated Start, Stop or Acknowledge condition
was in progress when the bus collision occurred, the con-
dition is aborted, the SDA and SCL lines are deasserted
and the respective control bits in the SSPCON2 register
are cleared. When the user services the bus collision
Interrupt Service Routine, and if the I2C bus is free, the
user can resume communication by asserting a Start
condition.
The master will continue to monitor the SDA and SCL
pins. If a Stop condition occurs, the SSPIF bit will be set.
A write to the SSPBUF will start the transmission of
data at the first data bit regardless of where the
transmitter left off when the bus collision occurred.
In Multi-Master mode, the interrupt generation on the
detection of Start and Stop conditions allows the determi-
nation of when the bus is free. Control of the I2C bus can
be taken when the P bit is set in the SSPSTAT register, or
the bus is Idle and the S and P bits are cleared.
FIGURE 21-27:
BUS COLLISION TIMING FOR TRANSMIT AND ACKNOWLEDGE
SDA
SCL
BCLIF
SDA released
SDA line pulled low
by another source
Sample SDA. While SCL is high,
data doesn鈥檛 match what is driven
bus collision has occurred.
Set bus collision
interrupt (BCLIF)
by the master;
by master
Data changes
while SCL = 0
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
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| PIC16F627-20I/SO | IC MCU FLASH 1KX14 COMP 18SOIC |
| PIC18F26K22-I/SS | IC PIC MCU 64KB FLASH 28SSOP |
| PIC18LF26K22-I/SS | IC PIC MCU 64KB FLASH 28SSOP |
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| PIC18F46K20-I/ML | IC PIC MCU FLASH 32KX16 44-QFN |
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
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| PIC18F25K80T-I/ML | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32KB FL 4KBRM 16MIPS 12bit ADC CTMU RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪(sh铆)閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜(ch菙)鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰�(f膿ng)鏍�:SMD/SMT |
| PIC18F25K80T-I/MM | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU ECAN 32KB FL 4KBRM 16 MIPS 12b ADC CTMU RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪(sh铆)閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜(ch菙)鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰�(f膿ng)鏍�:SMD/SMT |
| PIC18F25K80T-I/SO | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32KB FL 4KBRM 16MIPS 12bit ADC CTMU RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪(sh铆)閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜(ch菙)鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰�(f膿ng)鏍�:SMD/SMT |
| PIC18F25K80T-I/SS | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32KB FL 4KBRM 16MIPS 12bit ADC CTMU RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪(sh铆)閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜(ch菙)鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰�(f膿ng)鏍�:SMD/SMT |
| PIC18F2610-E/SO | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 64KB 3968 RAM 25 I/O RoHS:鍚� 鍒堕€犲晢:Silicon Labs 鏍稿績:8051 铏曠悊鍣ㄧ郴鍒�:C8051F39x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:8 bit 鏈€澶ф檪(sh铆)閻橀牷鐜�:50 MHz 绋嬪簭瀛樺劜(ch菙)鍣ㄥぇ灏�:16 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:1 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:1.8 V to 3.6 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:QFN-20 瀹夎棰�(f膿ng)鏍�:SMD/SMT |
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