參數(shù)資料
型號(hào)： DS2251T-128-16
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 12/22頁(yè)
文件大小： 0K
描述： IC MICROCNTRLR 128K 16MHZ 72SIMM
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
系列： DS225x
核心處理器： 8051
芯體尺寸： 8-位
速度： 16MHz
連通性： SIO，UART/USART
外圍設(shè)備： 電源故障復(fù)位，WDT
輸入/輸出數(shù)： 32
程序存儲(chǔ)器類(lèi)型： SRAM
RAM 容量： 128K x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 72-SIMM
包裝： 托盤(pán)
DS2251T
2 of 22
The DS2251T provides the benefits of NV RAM without using I/O resources. Between 32 kbytes and 128
kbytes of onboard NV RAM are available. A non-multiplexed Byte-wide address and data bus is used for
memory access. This bus, which is available at the connector, can perform all memory access and also
provide decoded chip enables for off-board memory mapped peripherals. This leaves the 32 I/O port pins
free for application use.
The DS2251T provides high-reliability operation in portable systems or systems with unreliable power.
These features include the ability to save the operating state, Power-fail Reset, Power-fail Interrupt, and
Watchdog Timer. All nonvolatile memory and resources are maintained for over 10 years at room
temperature in the absence of power.
A user loads programs into the DS2251T via its on-chip serial Bootstrap loader. This function supervises
the loading of software into NV RAM, validates it, then becomes transparent to the user. Software is
stored in onboard CMOS SRAM. Using its internal Partitioning, the DS2251T can divide a common
RAM into user-selectable program and data segments. This Partition can be selected at program loading
time, but can be modified anytime later. The microprocessor will decode memory access to the SRAM,
access memory via its Byte-wide bus and write-protect the memory portion designated as program
(ROM).
Operating information is contained in the Secure Microcontroller User’s Guide. This data sheet provides
ordering information, pinout, and electrical specifications.
ORDERING INFORMATION
PART
RAM SIZE (kB)
MAX CRYSTAL
SPEED (MHz)
TIMEKEEPING?
DS2251T-32-16
32
16
Yes
DS2251T-32-16#
32
16
Yes
DS2251T-64-16
64
16
Yes
DS2251T-64-16#
64
16
Yes
DS2251T-128-16
128
16
Yes
DS2251T-128-16#
128
16
Yes
# Denotes a RoHS-compliant package that may contain lead exempt under the RoHS requirements.
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參數(shù)描述
DS2251T-128-16# 功能描述:模塊化系統(tǒng) - SOM 128K Soft MCU Module RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類(lèi)型:ARM926EJ-S 頻率:150 MHz 存儲(chǔ)容量:8 MB, 16 MB 存儲(chǔ)類(lèi)型:NOR Flash, SDRAM 接口類(lèi)型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
DS2251T32-08 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Microcontroller
DS2251T-32-12 功能描述:模塊化系統(tǒng) - SOM RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類(lèi)型:ARM926EJ-S 頻率:150 MHz 存儲(chǔ)容量:8 MB, 16 MB 存儲(chǔ)類(lèi)型:NOR Flash, SDRAM 接口類(lèi)型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
DS2251T32-12 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Microcontroller
DS2251T-32-16 功能描述:模塊化系統(tǒng) - SOM 32K Soft MCU Module RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類(lèi)型:ARM926EJ-S 頻率:150 MHz 存儲(chǔ)容量:8 MB, 16 MB 存儲(chǔ)類(lèi)型:NOR Flash, SDRAM 接口類(lèi)型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
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