参数资料
型号: MCV18E-I/P
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDIP18
封装: 0.300 INCH, LEAD FREE, PLASTIC, DIP-18
文件页数: 26/108页
文件大小: 1509K
代理商: MCV18E-I/P
MCV18E
DS41399A-page 24
2009 Microchip Technology Inc.
FIGURE 3-4:
BLOCK DIAGRAM OF RB1/T1OSO/T1CKI PIN
FIGURE 3-5:
BLOCK DIAGRAM OF RB2/T1OSI PIN
Q
D
Q
CK
Q
D
Q
CK
TTL Buffer
TRIS Latch
Data Latch
RB1/T1OSO/T1CKI
DATA BUS
WR PORTB
WR TRISB
T1OSCEN
RD PORTB
T1OSI (From RB2)
To Timer1 clock input
P
VDD
weak
pull-up
RBPU(1)
T1OSCEN
VSS
VDD
Note
1:
To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (OPTION register).
RD TRISB
D
Q
EN
TMR1 oscillator
ST Buffer
P
VDD
weak
pull-up
Q
D
Q
CK
Q
D
Q
CK
TTL Buffer
TRIS Latch
Data Latch
DATA BUS
WR PORTB
WR TRISB
T1OSCEN
RD PORTB
RB2/T1OSI
RBPU(1)
T1OSCEN
VSS
VDD
Note
1:
To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (OPTION register).
RD TRIS
D
Q
EN
T1OSO (To RB1)
TMR1
Oscillator
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