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PIC10F200-I/P 参数 Datasheet PDF下载

PIC10F200-I/P图片预览
型号: PIC10F200-I/P
PDF下载: 下载PDF文件 查看货源
内容描述: 6引脚8位闪存微控制器 [6-Pin, 8-Bit Flash Microcontrollers]
分类和应用: 闪存微控制器和处理器外围集成电路光电二极管PC时钟
文件页数/大小: 96 页 / 1447 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC10F200/202/204/206  
9.7  
Time-out Sequence, Power-down  
and Wake-up from Sleep Status  
Bits (TO, PD, GPWUF, CWUF)  
The TO, PD, GPWUF and CWUF bits in the STATUS  
register can be tested to determine if a Reset condition  
has been caused by a power-up condition, a MCLR,  
Watchdog Timer (WDT) Reset, wake-up on comparator  
change or wake-up on pin change.  
TABLE 9-5:  
CWUF  
TO, PD, GPWUF, CWUF STATUS AFTER RESET  
GPWUF  
TO  
PD  
Reset Caused By  
WDT wake-up from Sleep  
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
1
1
u
1
1
0
u
0
1
u
0
0
WDT time-out (not from Sleep)  
MCLR wake-up from Sleep  
Power-up  
MCLR not during Sleep  
Wake-up from Sleep on pin change  
Wake-up from Sleep on comparator change  
Legend: u= unchanged, x= unknown, – = unimplemented bit, read as ‘0’, q= value depends on condition.  
Note 1: The TO, PD, GPWUF and CWUF bits maintain their status (u) until a Reset occurs. A low-pulse on the  
MCLR input does not change the TO, PD, GPWUF or CWUF Status bits.  
FIGURE 9-8:  
BROWN-OUT  
9.8  
Reset on Brown-out  
PROTECTION CIRCUIT 2  
A Brown-out Reset is a condition where device power  
(VDD) dips below its minimum value, but not to zero,  
and then recovers. The device should be reset in the  
event of a brown-out.  
VDD  
VDD  
R1  
R2  
To reset PIC10F200/202/204/206 devices when a  
Brown-out Reset occurs, external brown-out protection  
circuits may be built, as shown in Figure 9-7 and  
Figure 9-8.  
PIC10F20X  
Q1  
(2)  
MCLR  
(1)  
40k  
FIGURE 9-7:  
BROWN-OUT  
PROTECTION CIRCUIT 1  
VDD  
Note 1: This brown-out circuit is less expensive,  
although less accurate. Transistor Q1 turns  
off when VDD is below a certain level such  
VDD  
33k  
that:  
R1  
R1 + R2  
= 0.7V  
VDD •  
PIC10F20X  
Q1  
(2)  
MCLR  
10k  
(1)  
2: Pin must be confirmed as MCLR.  
40k  
Note 1: This circuit will activate Reset when VDD goes  
below Vz + 0.7V (where Vz = Zener voltage).  
2: Pin must be confirmed as MCLR.  
DS41239D-page 48  
© 2007 Microchip Technology Inc.  
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