FIGURE 11-27: OPERATION OF THE I2
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� PIC16C72T-10E/SS
寤犲晢锛� Microchip Technology
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 113/114闋�(y猫)
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC MCU OTP 2KX14 A/D PWM 28SSOP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 2,100
绯诲垪锛� PIC® 16C
鏍稿績铏曠悊鍣細 PIC
鑺珨灏哄锛� 8-浣�
閫熷害锛� 10MHz
閫ｉ€氭€э細 I²C锛孲PI
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� 22
绋嬪簭瀛樺劜(ch菙)鍣ㄥ閲忥細 3.5KB锛�2K x 14锛�
绋嬪簭瀛樺劜(ch菙)鍣ㄩ鍨嬶細 OTP
RAM 瀹归噺锛� 128 x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 4 V ~ 6 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 5x8b
鎸暕鍣ㄥ瀷锛� 澶栭儴
宸ヤ綔婧害锛� -40°C ~ 125°C
灏佽/澶栨锛� 28-SSOP锛�0.209"锛�5.30mm 瀵級
鍖呰锛� 甯跺嵎 (TR)
绗�1闋�(y猫)绗�2闋�(y猫)绗�3闋�(y猫)绗�4闋�(y猫)绗�5闋�(y猫)绗�6闋�(y猫)绗�7闋�(y猫)绗�8闋�(y猫)绗�9闋�(y猫)绗�10闋�(y猫)绗�11闋�(y猫)绗�12闋�(y猫)绗�13闋�(y猫)绗�14闋�(y猫)绗�15闋�(y猫)绗�16闋�(y猫)绗�17闋�(y猫)绗�18闋�(y猫)绗�19闋�(y猫)绗�20闋�(y猫)绗�21闋�(y猫)绗�22闋�(y猫)绗�23闋�(y猫)绗�24闋�(y猫)绗�25闋�(y猫)绗�26闋�(y猫)绗�27闋�(y猫)绗�28闋�(y猫)绗�29闋�(y猫)绗�30闋�(y猫)绗�31闋�(y猫)绗�32闋�(y猫)绗�33闋�(y猫)绗�34闋�(y猫)绗�35闋�(y猫)绗�36闋�(y猫)绗�37闋�(y猫)绗�38闋�(y猫)绗�39闋�(y猫)绗�40闋�(y猫)绗�41闋�(y猫)绗�42闋�(y猫)绗�43闋�(y猫)绗�44闋�(y猫)绗�45闋�(y猫)绗�46闋�(y猫)绗�47闋�(y猫)绗�48闋�(y猫)绗�49闋�(y猫)绗�50闋�(y猫)绗�51闋�(y猫)绗�52闋�(y猫)绗�53闋�(y猫)绗�54闋�(y猫)绗�55闋�(y猫)绗�56闋�(y猫)绗�57闋�(y猫)绗�58闋�(y猫)绗�59闋�(y猫)绗�60闋�(y猫)绗�61闋�(y猫)绗�62闋�(y猫)绗�63闋�(y猫)绗�64闋�(y猫)绗�65闋�(y猫)绗�66闋�(y猫)绗�67闋�(y猫)绗�68闋�(y猫)绗�69闋�(y猫)绗�70闋�(y猫)绗�71闋�(y猫)绗�72闋�(y猫)绗�73闋�(y猫)绗�74闋�(y猫)绗�75闋�(y猫)绗�76闋�(y猫)绗�77闋�(y猫)绗�78闋�(y猫)绗�79闋�(y猫)绗�80闋�(y猫)绗�81闋�(y猫)绗�82闋�(y猫)绗�83闋�(y猫)绗�84闋�(y猫)绗�85闋�(y猫)绗�86闋�(y猫)绗�87闋�(y猫)绗�88闋�(y猫)绗�89闋�(y猫)绗�90闋�(y猫)绗�91闋�(y猫)绗�92闋�(y猫)绗�93闋�(y猫)绗�94闋�(y猫)绗�95闋�(y猫)绗�96闋�(y猫)绗�97闋�(y猫)绗�98闋�(y猫)绗�99闋�(y猫)绗�100闋�(y猫)绗�101闋�(y猫)绗�102闋�(y猫)绗�103闋�(y猫)绗�104闋�(y猫)绗�105闋�(y猫)绗�106闋�(y猫)绗�107闋�(y猫)绗�108闋�(y猫)绗�109闋�(y猫)绗�110闋�(y猫)绗�111闋�(y猫)绗�112闋�(y猫)鐣�(d膩ng)鍓嶇113闋�(y猫)绗�114闋�(y猫)
PIC16C7X
DS30390E-page 98
1997 Microchip Technology Inc.
FIGURE 11-27: OPERATION OF THE I2C MODULE IN IDLE_MODE, RCV_MODE OR XMIT_MODE
IDLE_MODE (7-bit):
if (Addr_match)
{
Set interrupt;
if (R/W = 1)
{
Send ACK = 0;
set XMIT_MODE;
}
else if (R/W = 0) set RCV_MODE;
}
RCV_MODE:
if ((SSPBUF=Full) OR (SSPOV = 1))
{
Set SSPOV;
Do not acknowledge;
}
else
{
transfer SSPSR
鈫� SSPBUF;
send ACK = 0;
}
Receive 8-bits in SSPSR;
Set interrupt;
XMIT_MODE:
While ((SSPBUF = Empty) AND (CKP=0)) Hold SCL Low;
Send byte;
Set interrupt;
if ( ACK Received = 1)
{
End of transmission;
Go back to IDLE_MODE;
}
else if ( ACK Received = 0) Go back to XMIT_MODE;
IDLE_MODE (10-Bit):
If (High_byte_addr_match AND (R/W = 0))
{
PRIOR_ADDR_MATCH = FALSE;
Set interrupt;
if ((SSPBUF = Full) OR ((SSPOV = 1))
{
Set SSPOV;
Do not acknowledge;
}
else
{
Set UA = 1;
Send ACK = 0;
While (SSPADD not updated) Hold SCL low;
Clear UA = 0;
Receive Low_addr_byte;
Set interrupt;
Set UA = 1;
If (Low_byte_addr_match)
{
PRIOR_ADDR_MATCH = TRUE;
Send ACK = 0;
while (SSPADD not updated) Hold SCL low;
Clear UA = 0;
Set RCV_MODE;
}
else if (High_byte_addr_match AND (R/W = 1)
{
if (PRIOR_ADDR_MATCH)
{
send ACK = 0;
set XMIT_MODE;
}
else PRIOR_ADDR_MATCH = FALSE;
}
Applicable Devices
72 73 73A 74 74A 76 77
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鍙冩暩(sh霉)鎻忚堪
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