I2C MAST" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� PIC18F4539T-I/ML
寤犲晢锛� Microchip Technology
鏂囦欢闋佹暩(sh霉)锛� 63/322闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MCU FLASH 12KX16 EE A/D 44QFN
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 1,600
绯诲垪锛� PIC® 18F
鏍稿績铏曠悊鍣細 PIC
鑺珨灏哄锛� 8-浣�
閫熷害锛� 40MHz
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�锛孡VD锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 32
绋嬪簭瀛樺劜鍣ㄥ閲忥細 24KB锛�12K x 16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� 1408 x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 4.2 V ~ 5.5 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 8x10b
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� 甯跺嵎 (TR)
绗�1闋�绗�2闋�绗�3闋�绗�4闋�绗�5闋�绗�6闋�绗�7闋�绗�8闋�绗�9闋�绗�10闋�绗�11闋�绗�12闋�绗�13闋�绗�14闋�绗�15闋�绗�16闋�绗�17闋�绗�18闋�绗�19闋�绗�20闋�绗�21闋�绗�22闋�绗�23闋�绗�24闋�绗�25闋�绗�26闋�绗�27闋�绗�28闋�绗�29闋�绗�30闋�绗�31闋�绗�32闋�绗�33闋�绗�34闋�绗�35闋�绗�36闋�绗�37闋�绗�38闋�绗�39闋�绗�40闋�绗�41闋�绗�42闋�绗�43闋�绗�44闋�绗�45闋�绗�46闋�绗�47闋�绗�48闋�绗�49闋�绗�50闋�绗�51闋�绗�52闋�绗�53闋�绗�54闋�绗�55闋�绗�56闋�绗�57闋�绗�58闋�绗�59闋�绗�60闋�绗�61闋�绗�62闋�鐣�(d膩ng)鍓嶇63闋�绗�64闋�绗�65闋�绗�66闋�绗�67闋�绗�68闋�绗�69闋�绗�70闋�绗�71闋�绗�72闋�绗�73闋�绗�74闋�绗�75闋�绗�76闋�绗�77闋�绗�78闋�绗�79闋�绗�80闋�绗�81闋�绗�82闋�绗�83闋�绗�84闋�绗�85闋�绗�86闋�绗�87闋�绗�88闋�绗�89闋�绗�90闋�绗�91闋�绗�92闋�绗�93闋�绗�94闋�绗�95闋�绗�96闋�绗�97闋�绗�98闋�绗�99闋�绗�100闋�绗�101闋�绗�102闋�绗�103闋�绗�104闋�绗�105闋�绗�106闋�绗�107闋�绗�108闋�绗�109闋�绗�110闋�绗�111闋�绗�112闋�绗�113闋�绗�114闋�绗�115闋�绗�116闋�绗�117闋�绗�118闋�绗�119闋�绗�120闋�绗�121闋�绗�122闋�绗�123闋�绗�124闋�绗�125闋�绗�126闋�绗�127闋�绗�128闋�绗�129闋�绗�130闋�绗�131闋�绗�132闋�绗�133闋�绗�134闋�绗�135闋�绗�136闋�绗�137闋�绗�138闋�绗�139闋�绗�140闋�绗�141闋�绗�142闋�绗�143闋�绗�144闋�绗�145闋�绗�146闋�绗�147闋�绗�148闋�绗�149闋�绗�150闋�绗�151闋�绗�152闋�绗�153闋�绗�154闋�绗�155闋�绗�156闋�绗�157闋�绗�158闋�绗�159闋�绗�160闋�绗�161闋�绗�162闋�绗�163闋�绗�164闋�绗�165闋�绗�166闋�绗�167闋�绗�168闋�绗�169闋�绗�170闋�绗�171闋�绗�172闋�绗�173闋�绗�174闋�绗�175闋�绗�176闋�绗�177闋�绗�178闋�绗�179闋�绗�180闋�绗�181闋�绗�182闋�绗�183闋�绗�184闋�绗�185闋�绗�186闋�绗�187闋�绗�188闋�绗�189闋�绗�190闋�绗�191闋�绗�192闋�绗�193闋�绗�194闋�绗�195闋�绗�196闋�绗�197闋�绗�198闋�绗�199闋�绗�200闋�绗�201闋�绗�202闋�绗�203闋�绗�204闋�绗�205闋�绗�206闋�绗�207闋�绗�208闋�绗�209闋�绗�210闋�绗�211闋�绗�212闋�绗�213闋�绗�214闋�绗�215闋�绗�216闋�绗�217闋�绗�218闋�绗�219闋�绗�220闋�绗�221闋�绗�222闋�绗�223闋�绗�224闋�绗�225闋�绗�226闋�绗�227闋�绗�228闋�绗�229闋�绗�230闋�绗�231闋�绗�232闋�绗�233闋�绗�234闋�绗�235闋�绗�236闋�绗�237闋�绗�238闋�绗�239闋�绗�240闋�绗�241闋�绗�242闋�绗�243闋�绗�244闋�绗�245闋�绗�246闋�绗�247闋�绗�248闋�绗�249闋�绗�250闋�绗�251闋�绗�252闋�绗�253闋�绗�254闋�绗�255闋�绗�256闋�绗�257闋�绗�258闋�绗�259闋�绗�260闋�绗�261闋�绗�262闋�绗�263闋�绗�264闋�绗�265闋�绗�266闋�绗�267闋�绗�268闋�绗�269闋�绗�270闋�绗�271闋�绗�272闋�绗�273闋�绗�274闋�绗�275闋�绗�276闋�绗�277闋�绗�278闋�绗�279闋�绗�280闋�绗�281闋�绗�282闋�绗�283闋�绗�284闋�绗�285闋�绗�286闋�绗�287闋�绗�288闋�绗�289闋�绗�290闋�绗�291闋�绗�292闋�绗�293闋�绗�294闋�绗�295闋�绗�296闋�绗�297闋�绗�298闋�绗�299闋�绗�300闋�绗�301闋�绗�302闋�绗�303闋�绗�304闋�绗�305闋�绗�306闋�绗�307闋�绗�308闋�绗�309闋�绗�310闋�绗�311闋�绗�312闋�绗�313闋�绗�314闋�绗�315闋�绗�316闋�绗�317闋�绗�318闋�绗�319闋�绗�320闋�绗�321闋�绗�322闋�
2002 Microchip Technology Inc.
Preliminary
DS30485A-page 153
PIC18FXX39
16.4.8
I2C MASTER MODE START
CONDITION TIMING
To initiate a START condition, the user sets the START
condition enable bit, SEN (SSPCON2<0>). If the SDA
and SCL pins are sampled high, the baud rate genera-
tor is reloaded with the contents of SSPADD<6:0> and
starts its count. If SCL and SDA are both sampled high
when the baud rate generator times out (TBRG), the
SDA pin is driven low. The action of the SDA being
driven low, while SCL is high, is the START condition
and causes the S bit (SSPSTAT<3>) to be set. Follow-
ing this, the baud rate generator is reloaded with the
contents of SSPADD<6:0> and resumes its count.
When the baud rate generator times out (TBRG), the
SEN bit (SSPCON2<0>) will be automatically cleared
by hardware, the baud rate generator is suspended,
leaving the SDA line held low and the START condition
is complete.
16.4.8.1
WCOL Status Flag
If the user writes the SSPBUF when a START
sequence is in progress, the WCOL is set and the con-
tents of the buffer are unchanged (the write doesn鈥檛
occur).
FIGURE 16-19:
FIRST START BIT TIMING
Note:
If at the beginning of the START condition,
the SDA and SCL pins are already sam-
pled low, or if during the START condition
the SCL line is sampled low before the
SDA line is driven low, a bus collision
occurs, the Bus Collision Interrupt Flag,
BCLIF is set, the START condition is
aborted, and the I2C module is reset into its
IDLE state.
Note:
Because queueing of events is not
allowed, writing to the lower 5 bits of
SSPCON2 is disabled until the START
condition is complete.
SDA
SCL
S
TBRG
1st bit
2nd bit
TBRG
SDA = 1,
At completion of START bit,
SCL = 1
Write to SSPBUF occurs here
TBRG
Hardware clears SEN bit
TBRG
Write to SEN bit occurs here
Set S bit (SSPSTAT<3>)
and sets SSPIF bit
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
PIC18LF2539T-I/SO IC MCU FLASH 12KX16 EE AD 28SOIC
PIC18LF4539T-I/PT IC MCU FLASH 12KX16 EE AD 44TQFP
PIC16LF874AT-I/ML IC MCU FLASH 4KX14 A/D 44QFN
PIC16F77T-E/ML IC MCU FLASH 8KX14 A/D 44QFN
PIC16F874A-E/ML IC MCU FLASH 4KX14 A/D 44QFN
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
PIC18F4550EPT 鍒堕€犲晢:Microchip Technology Inc 鍔熻兘鎻忚堪:
PIC18F4550-I/ML 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32kBF 2048RM FSUSB2 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
PIC18F4550-I/P 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32kBF 2048RM FSUSB2 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
PIC18F4550-I/PT 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32kBF 2048RM FSUSB2 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
PIC18F4550T-I/ML 鍔熻兘鎻忚堪:8浣嶅井鎺у埗鍣� -MCU 32kBF 2048RM FSUSB2 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