參數(shù)資料
型號: 16F871
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE GREEN 6 FT
中文描述: 28/40-Pin 8位CMOS閃存微控制器
文件頁數(shù): 30/156頁
文件大?。?/td> 2816K
代理商: 16F871
PIC16F870/871
DS30569A-page 30
Preliminary
1999 Microchip Technology Inc.
TABLE 3-3:
PORTB FUNCTIONS
TABLE 3-4:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
Name
Bit#
Buffer
TTL/ST
(1)
Function
RB0/INT
bit0
Input/output pin or external interrupt input. Internal software
programmable weak pull-up.
Input/output pin. Internal software programmable weak pull-up.
Input/output pin. Internal software programmable weak pull-up.
Input/output pin or programming pin in LVP mode. Internal software
programmable weak pull-up.
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
Input/output pin (with interrupt on change) or In-Circuit Debugger pin.
Internal software programmable weak pull-up. Serial programming clock.
Input/output pin (with interrupt on change) or In-Circuit Debugger pin.
Internal software programmable weak pull-up. Serial programming data.
RB1
RB2
RB3/PGM
bit1
bit2
bit3
TTL
TTL
TTL/ST
(1)
RB4
bit4
TTL
RB5
bit5
TTL
RB6/PGC
bit6
TTL/ST
(2)
RB7/PGD
bit7
TTL/ST
(2)
Legend: TTL = TTL input, ST = Schmitt Trigger input
Note 1:
This buffer is a Schmitt Trigger input when configured as the external interrupt or LVP mode.
2:
This buffer is a Schmitt Trigger input when used in serial programming mode.
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
06h, 106h
86h, 186h
81h, 181h
Legend:
PORTB
TRISB
OPTION_REG
x
= unknown,
u
= unchanged. Shaded cells are not used by PORTB.
RB7
PORTB Data Direction Register
RBPU
INTEDG
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx xxxx uuuu uuuu
1111 1111 1111 1111
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111 1111 1111
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