參數(shù)資料
型號： MR83C154TXXX-20P883D
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44
封裝： LCC-44
文件頁數(shù)： 7/81頁
文件大小： 663K
代理商： MR83C154TXXX-20P883D
15
ATtiny28L/V
1062F–AVR–07/06
System Control and
Reset
Reset Sources
The ATtiny28 provides three sources of reset:
Power-on Reset. The MCU is reset when the supply voltage is below the Power-on
Reset threshold (V
POT).
External Reset. The MCU is reset when a low level is present on the RESET pin for
more than 50 ns.
Watchdog Reset. The MCU is reset when the Watchdog Timer period expires and
the Watchdog is enabled.
During reset, all I/O registers are then set to their initial values and the program starts
execution from address $000. The instruction placed in address $000 must be an RJMP
(relative jump) instruction to the reset handling routine. If the program never enables an
interrupt source, the interrupt vectors are not used, and regular program code can be
placed at these locations. The circuit diagram in Figure 16 shows the reset logic. Table 4
defines the timing and electrical parameters of the reset circuitry.
Figure 16. Reset Logic
Note:
1. The Power-on Reset will not work unless the supply voltage has been below V
POT
(falling).
Table 4. Reset Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
V
POT
Power-on Reset Threshold Voltage (rising)
1.0
1.4
1.8
V
Power-on Reset Threshold Voltage (falling)
0.4
0.6
0.8
V
RST
RESET Pin Threshold Voltage
0.6 VCC
V
Power-on
Reset Circuit
Watchdog
Timer
On-chip
RC Oscillator
VCC
RESET
100 - 500K
Delay Counters
CK
CKSEL[3..0]
S
R
Q
Full
INTERNAL
RESET
COUNTER
RESET
MCU Control and Status
Register (MCUCS)
PORF
EXTRF
WDRF
DATA BUS
相關PDF資料
PDF描述
MQ80C52TXXX-20:D 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQFP44
MR80C32-20/883:RD 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44
MR80C32-16/883R 8-BIT, 16 MHz, MICROCONTROLLER, CQCC44
MC80C52CXXX-30P883 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CDIP40
MR80C32-20/883:RD 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44
相關代理商/技術參數(shù)
參數(shù)描述
MR850 功能描述:整流器 3.0 Amp 50 Volt 150ns RoHS:否 制造商:Vishay Semiconductors 產品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
MR850 _AY _10001 制造商:PanJit Touch Screens 功能描述:
MR850 R0 制造商:SKMI/Taiwan 功能描述:Diode Switching 50V 3A 2-Pin DO-201AD T/R
MR850_ R2 _10001 制造商:PanJit Touch Screens 功能描述:
MR850_09 制造商:PANJIT 制造商全稱:Pan Jit International Inc. 功能描述:SOFT RECOVERY, FAST SWITCHING PLASTIC RECTIFIER
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*