參數(shù)資料
型號: MCV18ET-I/SO
元件分類: 微控制器/微處理器
英文描述: FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO18
封裝: 7.50 MM, LEAD FREE, SOIC-18
文件頁數(shù): 29/108頁
文件大?。?/td> 1509K
代理商: MCV18ET-I/SO
2009 Microchip Technology Inc.
DS41399A-page 27
MCV18E
FIGURE 3-10:
BLOCK DIAGRAM OF RB7/P1D PIN
TABLE 3-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
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
PORTB
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx xxxx
uuuu uuuu
TRISB
TRISB7
TRISB6
TRISB5
TRISB4
TRISB3
TRISB2
TRISB1
TRISB0
1111 1111
OPTION_REG
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
Legend:
x
= unknown, u = unchanged. Shaded cells are not used by PORTB.
Data Latch
From other
RBPU(1)
P
VDD
Q
D
CK
Q
D
CK
QD
EN
QD
EN
DATA BUS
WR PORTB
WR TRISB
Set RBIF
TRIS Latch
RD TRISB
RD PORTB
RB<7:4> pins
weak
pull-up
RD PORTB
Latch
TTL
Buffer
Q3
Q1
Note
1:
To enable weak pull-ups,
set the appropriate TRIS
bit(s) and clear the RBPU
bit of the OPTION register.
VSS
VDD
RB7/P1D
0
1
Q
PWMD(P1D) Enable
PWMD(P1D) Data out
PWMD(P1D) Auto-shutdown tri-state
ST
Buffer
ICSPD – In-Circuit Serial Programming Data Input
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