參數(shù)資料
型號(hào)： PIC10F220IP
廠商： Microchip Technology Inc.
英文描述： 6-Pin, 8-Bit Flash Microcontrollers
中文描述： 6引腳，8位閃存微控制器
文件頁(yè)數(shù)： 29/78頁(yè)
文件大?。?/td> 583K
代理商： PIC10F220IP
2006 Microchip Technology Inc.
Preliminary
DS41270B-page 27
PIC10F220/222
6.1.2
TIMER0 INCREMENT DELAY
Since the prescaler output is synchronized with the
internal clocks, there is a small delay from the time the
external clock edge occurs to the time the Timer0 mod-
ule is actually incremented. Figure 6-4 shows the delay
from the external clock edge to the timer incrementing.
FIGURE 6-4:
TIMER0 TIMING WITH EXTERNAL CLOCK
6.2
Prescaler
An 8-bit counter is available as a prescaler for the
Timer0 module or as a postscaler for the Watchdog
Timer (WDT), respectively (see
Section 8.6 “Watch-
dog Timer (WDT)”
). For simplicity, this counter is
being referred to as “prescaler” throughout this data
sheet.
The PSA and PS<2:0> bits (OPTION<3:0>) determine
prescaler assignment and prescale ratio.
When assigned to the Timer0 module, all instructions
writing to the TMR0 register (e.g.,
CLRF 1,
MOVWF 1, BSF 1,x,
etc.) will clear the prescaler.
When assigned to WDT, a
CLRWDT
instruction will clear
the prescaler along with the WDT. The prescaler is
neither readable nor writable. On a Reset, the
prescaler contains all ‘
0
’s.
Increment Timer0 (Q4)
External Clock Input or
Prescaler Output (2)
Q1 Q2 Q3 Q4
Q1 Q2 Q3 Q4
Q1 Q2 Q3 Q4
Q1 Q2 Q3 Q4
Small pulse
misses sampling
Timer0
T0
T0 + 1
T0 + 2
External Clock/Prescaler
Output After Sampling
(3)
(1)
Note 1:
Delay from clock input change to Timer0 increment is 3T
OSC
to 7T
OSC
. (Duration of Q = T
OSC
).
Therefore, the error in measuring the interval between two edges on Timer0 input = ±4T
OSC
max.
2:
External clock if no prescaler selected; prescaler output otherwise.
3:
The arrows indicate the points in time where sampling occurs.
Note:
The prescaler may be used by either the
Timer0 module or the WDT, but not both.
Thus, a prescaler assignment for the
Timer0 module means that there is no
prescaler for the WDT and vice-versa.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC10F220TE/MC 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D
PIC10F220T-E/MC 制造商:Microchip Technology Inc 功能描述:
PIC10F220TE/OT 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D
PIC10F220T-E/OT 功能描述:8位微控制器 -MCU 384 B FL 16 RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC10F220TE/P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D
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