PIC16LC71 datasheet(28/176 Pages) MICROCHIP

28 / 176 page

PIC16C71X

DS30272A-page 28

FIGURE 5-4:

BLOCK DIAGRAM OF

RB7:RB4 PINS

(PIC16C71)

Data Latch

From other

RBPU(2)

VDD

I/O

Data bus

WR Port

WR TRIS

Set RBIF

TRIS Latch

RD TRIS

RD Port

RB7:RB4 pins

weak

pull-up

RD Port

Latch

TTL

Input

Buffer

pin(1)

Buffer

RB7:RB6 in serial programming mode

Note 1: I/O pins have diode protection to VDD and VSS.

2: TRISB = ’1’ enables weak pull-up if

RBPU = ’0’ (OPTION<7>).

FIGURE 5-5:

BLOCK DIAGRAM OF

RB7:RB4 PINS

(PIC16C710/711/715)

Data Latch

From other

RBPU(2)

VDD

I/O

Data bus

WR Port

WR TRIS

Set RBIF

TRIS Latch

RD TRIS

RD Port

RB7:RB4 pins

weak

pull-up

RD Port

Latch

TTL

Input

Buffer

pin(1)

Buffer

RB7:RB6 in serial programming mode

Note 1: I/O pins have diode protection to VDD and VSS.

2: TRISB = ’1’ enables weak pull-up if

RBPU = ’0’ (OPTION<7>).

TABLE 5-3:

PORTB FUNCTIONS

Name

Bit#

Buffer

Function

RB0/INT

bit0

TTL/ST(1)

Input/output pin or external interrupt input. Internal software

programmable weak pull-up.

RB1

bit1

TTL

Input/output pin. Internal software programmable weak pull-up.

RB2

bit2

TTL

Input/output pin. Internal software programmable weak pull-up.

RB3

bit3

TTL

Input/output pin. Internal software programmable weak pull-up.

RB4

bit4

TTL

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up.

RB5

bit5

TTL

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up.

RB6

bit6

TTL/ST(2)

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up. Serial programming clock.

RB7

bit7

TTL/ST(2)

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up. Serial programming data.

Legend: TTL = TTL input, ST = Schmitt Trigger input

Note 1: This buffer is a Schmitt Trigger input when conﬁgured as the external interrupt.

2: This buffer is a Schmitt Trigger input when used in serial programming mode.

PIC16LC71 датащи(PDF) 28 Page - Microchip Technology

PIC16LC71 датащи(HTML) 28 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL