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| PIC16F946 Datasheet, PDF (66/274 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology | |||
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PIC16F946
FIGURE 3-27:
BLOCK DIAGRAM OF RE3/MCLR/VPP
MCLR circuit
MCLR Filter
HV
Schmitt Trigger
Buffer
Programming mode
Data Bus
RE TRISE
HV Detect
MCLRE
RE3/MCLR/VPP(1)
HV
Schmitt Trigger
Buffer
RE PORTE
Note 1: RE3 will read â0â when pin is MCLR.
TABLE 3-5: SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
Value on all
other
Resets
09h
PORTE
RE7
R6
RE5
RE4
RE3
RE2
RE1
RE0 xxxx xxxx uuuu uuuu
1Fh
ADCON0
ADFM VCFG1 VCFG0 CHS2
CHS1
CHS0 GO/DONE ADON 0000 0000 0000 0000
89h
TRISE
TRISE7 TRISE6 TRISE5 TRISE4 TRISE3(2) TRISE2 TRISE1 TRISE0 1111 1111 1111 1111
91h
ANSEL
ANS7 ANS6
ANS5
ANS4
ANS3
ANS2
ANS1
ANS0 1111 1111 1111 1111
107h
11Eh
19Ch
LCDCON
LCDSE2(1)
LCDSE3(1)
LCDEN
SE23
SE31
SLPEN
SE22
SE30
WERR
SE21
SE29
VLCDEN
SE20
SE28
CS1
SE19
SE27
CS0
SE18
SE26
LMUX1
SE17
SE25
LMUX0
SE16
SE24
0001 0011 0001 0011
0000 0000 uuuu uuuu
0000 0000 uuuu uuuu
Legend:
Note 1:
2:
x = unknown, u = unchanged, â = unimplemented locations read as â0â. Shaded cells are not used by PORTE.
This register is only initialized by a POR or BOR and is unchanged by other Resets.
Bit is read-only; TRISE = 1 always.
DS41265A-page 64
Preliminary
© 2005 Microchip Technology Inc.
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