MCLR/V
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� PIC16CR74-I/ML
寤犲晢锛� Microchip Technology
鏂囦欢闋佹暩(sh霉)锛� 18/172闋�
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC PIC MCU 4KX14 44QFN
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 45
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� 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)浣嶏紝POR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 33
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 ROM
RAM 瀹归噺锛� 192 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 8x8b
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
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�鐣�(d膩ng)鍓嶇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�绗�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�
PIC18F2220/2320/4220/4320
DS39599G-page 112
2007 Microchip Technology Inc.
FIGURE 10-14:
BLOCK DIAGRAM OF
MCLR/VPP/RE3 PIN
MCLR/VPP/
Data Bus
RD PORTE
RD LATE
Schmitt
Trigger
MCLRE
RD TRISE
QD
EN
Latch
Filter
Low-Level
MCLR Detect
High-Voltage Detect
Internal MCLR
HV
RE3
REGISTER 10-1:
TRISE REGISTER
R-0
R/W-0
U-0
R/W-1
IBF
OBF
IBOV
PSPMODE
鈥�
TRISE2
TRISE1
TRISE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as 鈥�0鈥�
-n = Value at POR
鈥�1鈥� = Bit is set
鈥�0鈥� = Bit is cleared
x = Bit is unknown
bit 7
IBF: Input Buffer Full Status bit
1 = A word has been received and waiting to be read by the CPU
0 = No word has been received
bit 6
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
bit 5
IBOV: Input Buffer Overflow Detect bit (in Microprocessor mode)
1 = A write occurred when a previously input word has not been read (must be cleared in software)
0 = No overflow occurred
bit 4
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel Slave Port mode
0 = General Purpose I/O mode
bit 3
Unimplemented: Read as 鈥�0鈥�
bit 2
TRISE2: RE2 Direction Control bit
1 = Input
0 = Output
bit 1
TRISE1: RE1 Direction Control bit
1 = Input
0 = Output
bit 0
TRISE0: RE0 Direction Control bit
1 = Input
0 = Output
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