參數(shù)資料
型號: PIC16LC715
廠商: Microchip Technology Inc.
英文描述: 8-Bit CMOS Microcontrollers with A/D Converter
中文描述: 8位CMOS微控制器與A / D轉(zhuǎn)換器
文件頁數(shù): 28/176頁
文件大小: 803K
代理商: PIC16LC715
PIC16C71X
DS30272A-page 28
1997 Microchip Technology Inc.
FIGURE 5-4:
BLOCK DIAGRAM OF
RB7:RB4 PINS
(PIC16C71)
Data Latch
D
From other
RB7:RB4 pins
RBPU
(2)
P
V
DD
I/O
pin
(1)
Q
CK
Q
D
CK
Q
D
EN
Q
D
EN
Data bus
WR Port
WR TRIS
Set RBIF
TRIS Latch
RD TRIS
RD Port
weak
pull-up
RD Port
Latch
TTL
Input
Buffer
ST
Buffer
RB7:RB6 in serial programming mode
Note 1: I/O pins have diode protection to V
DD
and V
SS
.
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
D
From other
RB7:RB4 pins
RBPU
(2)
P
V
DD
I/O
pin
(1)
Q
CK
Q
D
CK
Q
D
EN
Q
D
EN
Data bus
WR Port
WR TRIS
Set RBIF
TRIS Latch
RD TRIS
RD Port
weak
pull-up
RD Port
Latch
TTL
Input
Buffer
ST
Buffer
RB7:RB6 in serial programming mode
Q3
Q1
Note 1: I/O pins have diode protection to V
DD
and V
SS
.
2: TRISB = ’1’ enables weak pull-up if
RBPU = ’0’ (OPTION<7>).
TABLE 5-3:
PORTB FUNCTIONS
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. 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). Internal software programmable
weak pull-up. Serial programming clock.
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up. Serial programming data.
RB1
RB2
RB3
RB4
bit1
bit2
bit3
bit4
TTL
TTL
TTL
TTL
RB5
bit5
TTL
RB6
bit6
TTL/ST
(2)
RB7
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.
2: This buffer is a Schmitt Trigger input when used in serial programming mode.
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