- 您現(xiàn)在的位置：買賣IC網 > PDF目錄368023 > PIC10F202T (Microchip Technology Inc.) 6-Pin, 8-Bit Flash Microcontrollers PDF資料下載
參數(shù)資料
| 型號： | PIC10F202T |
| 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 |
| 文件頁數(shù)： | 37/86頁 |
| 文件大?。?/td> | 620K |
| 代理商： | PIC10F202T |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁
2005 Microchip Technology Inc.
Preliminary
DS41239B-page 35
PIC10F200/202/204/206
7.1.2
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
module is actually incremented. Figure 7-4 shows the
delay from the external clock edge to the timer
incrementing.
FIGURE 7-4:
TIMER0 TIMING WITH EXTERNAL CLOCK
7.2
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 Figure 9-6). 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.
7.2.1
SWITCHING PRESCALER
ASSIGNMENT
The prescaler assignment is fully under software
control (i.e., it can be changed “on-the-fly” during pro-
gram execution). To avoid an unintended device Reset,
the following instruction sequence (Example 7-1) must
be executed when changing the prescaler assignment
from Timer0 to the WDT.
EXAMPLE 7-1:
CHANGING PRESCALER
(TIMER0
→
WDT)
;Clear WDT
;Clear TMR0 & Prescaler
‘00xx1111’b ;These 3 lines (5, 6, 7)
;are required only if
;desired
;PS<2:0> are 000 or 001
‘00xx1xxx’b ;Set Postscaler to
;desired WDT rate
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
Timer0
T0
T0 + 1
T0 + 2
Small pulse
misses sampling
External Clock/Prescaler
Output After Sampling
(3)
(1)
Note 1:
Delay from clock input change to Timer0 increment is 3 T
OSC
to 7 T
OSC
(Duration of Q = T
OSC
). Therefore, the error
in measuring the interval between two edges on Timer0 input = ±4 T
OSC
max.
External clock if no prescaler selected; prescaler output otherwise.
The arrows indicate the points in time where sampling occurs.
2:
3:
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.
CLRWDT
CLRF
MOVLW
OPTION
TMR0
CLRWDT
MOVLW
OPTION
相關PDF資料 |
PDF描述 |
|---|---|
| PIC10F200 | 6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F200T | 6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F202 | 6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F204 | 6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F204T | 6-Pin, 8-Bit Flash Microcontrollers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PIC10F202T-E/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F202T-E/OT | 功能描述:8位微控制器 -MCU .75kBF 24RM 4I/O Ext Temp SOT-23 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| PIC10F202T-E/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F202T-I/MC | 功能描述:8位微控制器 -MCU 0.75KB Fl 24B 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| PIC10F202T-I/OT | 功能描述:8位微控制器 -MCU .75kBF 24RM 4I/O Ind Temp SOT-23 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復。