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參數(shù)資料
| 型號： | DS87C550 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | EPROM High-Speed Micro with A/D and PWM(帶 A/D 和 PWM的EPROM/ROM高速微控制器) |
| 中文描述： | 存儲器高速微與A / D及PWM（帶A / D轉(zhuǎn)換和脈寬調(diào)制的存儲器/ ROM的高速微控制器） |
| 文件頁數(shù)： | 3/27頁 |
| 文件大小： | 119K |
| 代理商： | DS87C550 |
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APPLICATION NOTE 78
030998 3/27
IDLE MODE
The Idle mode halts operation of the DS87C5x0 proces-
sor core but leaves internal clocks, serial ports, and tim-
ers running. This mode is invoked by setting the IDL bit
(PCON.0), and can be exited by an interrupt or external
reset via the RST pin. Use of this mode is not recom-
mended on new designs, as lower power operation can
be achieved by placing the part in PMM2 and executing
NOPs. Its inclusion in the DS87C5x0 provides back-
ward software compatibility.
POWER MANAGEMENT MODES
The greatest power savings come from utilizing the
power management modes associated with the
DS87C5x0. Unlike other techniques, Power Manage-
ment Modes 1 and 2 (PMM1 and PMM2) allow the user
to reduce power consumption without sacrificing perfor-
mance. Although the power management features are
an important part of a power efficient design, a thorough
understanding of the microprocessor will allow the sys-
tem designer to achieve maximum power savings.
The clock speed management modes are designed to
be part of a progressive level of power reduction, based
on external activity and performance needs. PMM1 and
PMM2 provide the lowest level of power consumption
while still permitting full computational and peripheral
operation. Figure 1 demonstrates the progression of
clock management modes. As explained later, transi-
tions between PMM1 and PMM2 must be made through
divide by 4 mode.
PROGRESSION OF CLOCK SPEED MODES
Figure 1
POWER ON
DIMODE
(DIPMM1
(DIPMM2
STOP MODE
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相關(guān)代理商/技術(shù)參數(shù) |
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| DS87C550-FCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-FNL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-KCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL+ | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設(shè)備:LED，POR，WDT 輸入/輸出數(shù):9 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件 |
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