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PIC16F753 数据表(PDF) 56 Page - Microchip Technology

部件名 PIC16F753
功能描述  14/16-Pin, Flash-Based 8-Bit CMOS Microcontrollers
PDF  230 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16F753 数据表(HTML) 56 Page - Microchip Technology

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PIC16F753/HV753
DS40001709C-page 56
 2013-2015 Microchip Technology Inc.
6.2
Register Definitions: Option and Timer0 Control
REGISTER 6-1:
OPTION_REG: OPTION REGISTER
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
RAPU
INTEDG
T0CS
T0SE
PSA
PS<2:0>
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
RAPU: PORTA Pull-up Enable bit
1
= PORTA pull-ups are disabled
0
= PORTA pull-ups are enabled by individual PORT latch values in WPU register
bit 6
INTEDG: Interrupt Edge Select bit
1
= Interrupt on rising edge of INT pin
0
= Interrupt on falling edge of INT pin
bit 5
T0CS: TMR0 Clock Source Select bit
1
= Transition on T0CKI pin
0
= Internal instruction cycle clock (FOSC/4)
bit 4
T0SE: TMR0 Source Edge Select bit
1
= Increment on high-to-low transition on T0CKI pin
0
= Increment on low-to-high transition on T0CKI pin
bit 3
PSA: Prescaler Assignment bit
1
= Prescaler is assigned to the WDT
0
= Prescaler is assigned to the Timer0 module
bit 2-0
PS<2:0>: Prescaler Rate Select bits
000
001
010
011
100
101
110
111
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
1 : 256
1 : 1
1 : 2
1 : 4
1 : 8
1 : 16
1 : 32
1 : 64
1 : 128
Bit Value
TMR0 Rate
WDT Rate
TABLE 6-1:
SUMMARY OF REGISTERS ASSOCIATED WITH TIMER0
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register on
Page
TMR0
TMR0<7:0>
54*
INTCON
GIE
PEIE
T0IE
INTE
IOCIE
T0IF
INTF
IOCIF
17
OPTION_REG
RAPU
INTEDG
T0CS
T0SE
PSA
PS<2:0>
56
TRISA
—
—
TRISA5
TRISA4
TRISA3(1)
TRISA2
TRISA1
TRISA0
43
Legend:
– = Unimplemented locations, read as ‘0’, u = unchanged, x = unknown. Shaded cells are not used by the Timer0
module.
*
Page provides register information.
Note
1:
TRISA3 always reads ‘1’.



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