DS1200
Serial RAM Chip
www.maxim-ic.com
FEATURES
§ 1024 Bits of Read/Write Memory
§ Low Data Retention Current for Battery
Backup Applications
§ Four Million Bits/Second Data Rate
§ Single-Byte or Multiple-Byte Data Transfer
Capability
§ No Restrictions on the Number of Write
Cycles
§ Low-Power CMOS Circuitry
APPLICATIONS
§ Software Authorization
§ Computer Identification
§ System Access Control
§ Secure Personnel Areas
§ Calibration
§ Automatic System Setup
§ Traveling Work Record
PIN ASSIGNMENT
16-Pin SO (300mil)
See Mech. Drawings Section
PIN DESCRIPTION
V CC - +5V
RST - Reset
DQ - Data Input/Output
CLK - Clock
GND - Ground
V BAT
NC
- Battery (+)
- No Connection
DESCRIPTION
The DS1200 serial RAM chip is a miniature read/write memory that can randomly access individual
8-bit strings (bytes) or sequentially access the entire 1024-bit contents (burst). Interface cost to a
microprocessor is minimized by on-chip circuitry, which permits data transfers with only three signals:
CLK, RST , and DQ.
Nonvolatility can be achieved by connecting a battery of 2V to 4V at the battery input V BAT. A load of
0.5 mA should be used to size the external battery for the required data retention time. If nonvolatility is
not required the V BAT pin should be grounded.
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相关代理商/技术参数
DS-1200 制造商:UNITEQ CORPORAT 功能描述:200MHz 2-Channel USB Digital Storage Oscilloscope 制造商:UNITEQ CORPORAT 功能描述:SCOPE,200MHz,2 CHANNEL,COLOR, 1GS/s,DIGITAL,USB,RS232C,1MB
DS1200_09 制造商:EMERSON-NETWORKPOWER 制造商全称:Emerson Network Power 功能描述:1200 Watts Distributed Power System
DS1-20-0001 功能描述:固定电感器 DS Storage choke 0.63A RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm
DS1-20-0002 功能描述:固定电感器 DS Storage choke 1.4A RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm
DS1-20-0003 功能描述:固定电感器 DS Storage choke 3.15A RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm
DS1-20-0004 制造商:Schurter Electronic Components 功能描述:
DS1200-3 功能描述:线性和开关式电源 12V output, 1200W 1U x 2U x 11" RoHS:否 制造商:TDK-Lambda 产品:Switching Supplies 开放式框架/封闭式:Enclosed 输出功率额定值:800 W 输入电压:85 VAC to 265 VAC 输出端数量:1 输出电压(通道 1):20 V 输出电流(通道 1):40 A 商用/医用: 输出电压(通道 2): 输出电流(通道 2): 安装风格:Rack 长度: 宽度: 高度:
DS1200-3-002 功能描述:线性和开关式电源 12V Out 1200W 1Ux2Ux11" w/5V Sby RoHS:否 制造商:TDK-Lambda 产品:Switching Supplies 开放式框架/封闭式:Enclosed 输出功率额定值:800 W 输入电压:85 VAC to 265 VAC 输出端数量:1 输出电压(通道 1):20 V 输出电流(通道 1):40 A 商用/医用: 输出电压(通道 2): 输出电流(通道 2): 安装风格:Rack 长度: 宽度: 高度: