參數(shù)資料
型號(hào)： DS5002FP-16
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Microcontroller
英文描述： 8-BIT, 16 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁(yè)數(shù)： 16/25頁(yè)
文件大?。?/td> 1197K
代理商： DS5002FP-16
DS5002FP Secure Microprocessor Chip
23 of 25
Figure 14. Connection to 64k x 8 SRAM
POWER MANAGEMENT
The DS5002FP monitors VCC to provide power-fail reset, early warning power-fail interrupt, and switchover to
lithium backup. It uses an internal bandgap reference in determining the switch points. These are called VPFW,
VCCMIN, and VLI respectively. When VCC drops below VPFW, the DS5002FP will perform an interrupt vector to location
2Bh if the power-fail warning was enabled. Full processor operation continues regardless. When power falls further
to VCCMIN, the DS5002FP invokes a reset state. No further code execution is performed unless power rises back
above VCCMIN. All decoded chip enables and the R/W signal go to an inactive (logic 1) state. VCC is still the power
source at this time. When VCC drops further to below VLI, internal circuitry switch to the lithium cell for power. The
majority of internal circuits will be disabled and the remaining nonvolatile states will be retained. Any devices
connected VCCO will be powered by the lithium cell at this time. VCCO is at the lithium battery voltage minus
approximately 0.45V (less a diode drop). This drop varies depending on the load. Low-power SRAMs should be
used for this reason. When using the DS5002FP, the user must select the appropriate battery to match the RAM
data retention current and the desired backup lifetime. Note that the lithium cell is only loaded when VCC < VLI. The
Secure Microcontroller User’s Guide has more information on this topic. The trip points VCCMIN and VPFW are listed
in the electrical specifications.
相關(guān)PDF資料
PDF描述
DS5002FPM-16 8-BIT, 16 MHz, MICROCONTROLLER, PQFP80
DS75S DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
DS75U/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT
DS75U-C12+T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT
DS75U DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS5002FP-16N 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Secure Microprocessor Chip
DS5002FPM+16 制造商:Maxim Integrated Products 功能描述:SECU MICR FP-DBL METAL-16MHZ PB-FRE - Rail/Tube
DS5002FPM-12 功能描述:微處理器 - MPU RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
DS5002FPM-16 功能描述:微處理器 - MPU Soft MCU Chip RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
DS5002FPM-16+ 功能描述:微處理器 - MPU Soft MCU Chip RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
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