PIC16C745-I 查看數據表（PDF） - Microchip Technology

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PIC16C745-I

8-Bit CMOS Microcontrollers with USB

Microchip Technology 

PIC16C745/765

REGISTER 5-1: PORTE DATA DIRECTION CONTROL REGISTER(1) (TRISE: 89h)

R-0

IBF

bit7

bit 7 :

R-0

OBF

R/W-0

R/W-0

U-0

IBOV PSPMODE —

R/W-1

TRISE2

R/W-1

TRISE1

IBF: Input Buffer Full Status bit

1 = A word has been received and is waiting to be read by the CPU

0 = No word has been received

R/W-1

TRISE0

bit0

R = Readable bit

W = Writable bit

U = Unimplemented bit,

read as ‘0’

- n = Value at POR reset

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 '0'

PORTE Data Direction Bits

bit 2:

TRISE2: Direction Control bit for pin RE2/CS/AN7

1 = Input

0 = Output

bit 1:

TRISE1: Direction Control bit for pin RE1/WR/AN6

1 = Input

0 = Output

bit 0:

Note 1:

TRISE0: Direction Control bit for pin RE0/RD/AN5

1 = Input

0 = Output

PIC16C765 only.

TABLE 5-10: 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(1) —

—

—

—

—

RE2

RE1

RE0 ---- -xxx ---- -uuu

89h

TRISE(1) IBF OBF IBOV PSPMODE — PORTE Data Direction Bits

0000 -111 0000 -111

9Fh

ADCON1 — — —

—

— PCFG2 PCFG1 PCFG0 ---- -000

Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.

Note 1: PIC16C765 only.

---- -000

© 1999 Microchip Technology Inc.

Advanced Information

DS41124A-page 39

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