参数资料
型号: PIC10F202T-I/PG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 4 MHz, RISC MICROCONTROLLER, PDIP8
封装: 0.300 INCH, LEAD FREE, PLASTIC, MS-001, DIP-8
文件页数: 32/88页
文件大小: 1127K
代理商: PIC10F202T-I/PG
PIC10F200/202/204/206
DS41239A-page 36
Preliminary
2004 Microchip Technology Inc.
To change the prescaler from the WDT to the Timer0
module, use the sequence shown in Example 7.2. This
sequence must be used even if the WDT is disabled. A
CLRWDT
instruction
should
be
executed
before
switching the prescaler.
EXAMPLE 7-2:
CHANGING PRESCALER
(WDT
→TIMER0)
FIGURE 7-5:
BLOCK DIAGRAM OF THE TIMER0/WDT PRESCALER
CLRWDT
;Clear WDT and
;prescaler
MOVLW
‘xxxx0xxx’
;Select TMR0, new
;prescale value and
;clock source
OPTION
TCY (= FOSC/4)
Sync
2
Cycles
TMR0 reg
8-bit Prescaler
8-to-1MUX
M
MUX
Watchdog
Timer
PSA(1)
0
1
0
1
WDT
Time-out
PS<2:0>(1)
8
PSA(1)
WDT Enable bit
0
1
0
1
Data Bus
8
PSA(1)
T0CS(1)
M
U
X
M
U
X
U
X
T0SE(1)
GP2/T0CKI(2)
Pin
Note 1:
T0CS, T0SE, PSA, PS<2:0> are bits in the Option register.
2:
T0CKI is shared with pin GP2.
3:
Bit CMPT0CS is located in the CMCON0 register.
1
0
Comparator
Output
CMPT0CS(3)
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