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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | PIC16F883T-I/SS |
| 寤犲晢锛� | Microchip Technology |
| 鏂囦欢闋佹暩(sh霉)锛� | 14/16闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC PIC MCU FLASH 4KX14 28SSOP |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Asynchronous Stimulus |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 2,100 |
| 绯诲垪锛� | PIC® 16F |
| 鏍稿績铏曠悊鍣細 | PIC |
| 鑺珨灏哄锛� | 8-浣� |
| 閫熷害锛� | 20MHz |
| 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/寰�(f霉)浣�锛孭OR锛孭WM锛學DT |
| 杓稿叆/杓稿嚭鏁�(sh霉)锛� | 24 |
| 绋嬪簭瀛樺劜鍣ㄥ閲忥細 | 7KB锛�4K x 14锛� |
| 绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 | 闁冨瓨 |
| EEPROM 澶у皬锛� | 256 x 8 |
| RAM 瀹归噺锛� | 256 x 8 |
| 闆诲 - 闆绘簮 (Vcc/Vdd)锛� | 2 V ~ 5.5 V |
| 鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� | A/D 11x10b |
| 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� | 甯跺嵎 (TR) |
| 閰嶇敤锛� | MCP1631RD-MCC2-ND - REFERENCE DESIGN MCP1631HV |
2009 Microchip Technology Inc.
DS80302F-page 7
PIC16F88X
6.
Module: MSSP (I2C Master Mode)
When the MSSP is I2C Master mode with a
slave device stretching the clock, the clock
generation does not function as described in the
data sheet.
When a slave device is performing clock stretching
by pulling the SCL line low, the master device
should continuously sample the SCL line to
determine when all slaves have released SCL.
When SCL is released, the master device should
wait one BRG period to ensure a constant SCL
high time.
The current implementation does not ensure
accurate SCL high time. During clock stretch, the
MSSP device will erroneously continue running
the BRG counter. At the end of the clock stretch
the BRG counter continues to count down for the
remainder of the BRG period, and then the MSSP
device will immediately resume transmitting the
data.
in which the SCL line is completely controlled by
the master device and the slave device does not
attempt to stretch the clock period.
Figure 2 illustrates the expected operation of an
I2C transmission in which the slave device has
stretched the clock period by holding the SCL line
low. The high time of the SCL pulse is constant,
regardless of the duration of the clock stretch.
transmission in which the slave has stretched the
clock period by holding the SCL line low. Note that
the high time of the SCL signal has shortened from
the expected time.
FIGURE 1:
ACTUAL (CORRECT) OPERATION WITHOUT CLOCK STRETCHING
FIGURE 2:
EXPECTED OPERATION WITH CLOCK STRETCHING
BRG Period
SDA
SCL
Master
Slave
BRG Period
SDA
SCL
Master
Slave
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
| SI3452-B01-GM | IC POE CONTROLLER MIDSPAN 40QFN |
| V300C48M75BG3 | CONVERTER MOD DC/DC 48V 75W |
| V300C48M75BG2 | CONVERTER MOD DC/DC 48V 75W |
| SI3452A-B01-GM | IC POE CONTROLLER MIDSPAN 40QFN |
| SI3452C-B01-GM | IC POE CONTROLLER MIDSPAN 40QFN |
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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| PIC16F884-E/ML | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash 256 RAM 36 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 |
| PIC16F884-E/P | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash 256 RAM 36 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 |
| PIC16F884-E/PT | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash 256 RAM 36 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 |
| PIC16F884-I/ML | 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 7KB Flash 256 RAM 36 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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