參數(shù)資料
型號: PIC16C505
廠商: Microchip Technology Inc.
英文描述: 14-Pin, 8-Bit CMOS Microcontroller(每個I/O口有25mA驅動/吸收電流,12個I/O口,帶WDT的微控制器)
中文描述: 14引腳,8位CMOS微控制器(每個的I / O口有25毫安驅動/吸收電流,12個的I / O口,帶看門狗的微控制器)
文件頁數(shù): 15/80頁
文件大?。?/td> 617K
代理商: PIC16C505
1998 Microchip Technology Inc.
Preliminary
DS40192A-page 15
PIC16C505
4.4
OPTION Register
The OPTION register is a 8-bit wide, write-only
register which contains various control bits to
configure the Timer0/WDT prescaler and Timer0.
By executing the
OPTION
instruction, the contents of
the W register will be transferred to the OPTION
register. A RESET sets the OPTION<7:0> bits.
Note:
If TRIS bit is set to ‘0’, the wake-up on
change and pull-up functions are disabled
for that pin; i.e., note that TRIS overrides
OPTION control of RBPU and RBWU.
FIGURE 4-4:
OPTION REGISTER
W-1
RBWU
bit7
W-1
RBPU
6
W-1
T0CS
5
W-1
T0SE
4
W-1
PSA
3
W-1
PS2
2
W-1
PS1
1
W-1
PS0
W = Writable bit
U
= Unimplemented bit
- n = Value at POR reset
Reference Table 4-1 for
other resets.
bit0
bit 7:
RBWU:
Enable wake-up on pin change (RB0, RB1, RB3, RB4)
1 = Disabled
0 = Enabled
bit 6:
RBPU
: Enable weak pull-ups (RB0, RB1, RB3, RB4)
1 = Disabled
0 = Enabled
bit 5:
T0CS
: Timer0 clock source select bit
1 = Transition on T0CKI pin
0 = Transition on internal instruction cycle clock, Fosc/4
bit 4:
T0SE
: Timer0 source edge select bit
1 = Increment on high to low transition on the T0CKI pin
0 = Increment on low to high transition on the T0CKI pin
bit 3:
PSA
: Prescaler assignment bit
1 = Prescaler assigned to the WDT
0 = Prescaler assigned to Timer0
bit 2-0:
PS2:PS0
: 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
Timer0 Rate
WDT Rate
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相關代理商/技術參數(shù)
參數(shù)描述
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PIC16C505-04/P 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU (TUBE 30) 16C505 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU 16C505 DIP14
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PIC16C505-04/SL 制造商:Microchip Technology Inc 功能描述:8BIT CMOS MCU SMD 16C505 SOIC14