参数资料
| 型号： | DS1780K |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/28页 |
| 文件大小： | 0K |
| 描述： | KIT EVALUATION DS1780 |
| 标准包装： | 1 |
第1页当前第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
DS1780
DESCRIPTION
The DS1780 is a highly integrated system instrumentation monitor ideal for use in personal computers, or
any microprocessor-based system. It monitors ambient temperature, six power supply voltages, and the
speed of two fans. Fan speed can also be controlled with the use of an internal 8-bit DAC. All
measurements are internally converted to a digital format for easy processing by the CPU.
The DS1780 can be reset to its default power-up state via a remote reset function with internal debounce
and delay. It features an interrupt that can be programmed to become active should any of the functions
the DS1780 is monitoring fall out of spec.
For board-level testability, an internal NAND TREE function simplifies the system design. A chassis
intrusion input is featured to enhance system security.
Programming and data readout are accessed via a simple 2-wire interface with 2-bit addressability. The
DS1780 power supply range of 2.8V to 5.75V allows for monitoring of parameters for 3V or 5V systems.
The DS1780 is assembled in a compact 173-mil TSSOP package.
Detailed Pin Description Table 1
PIN
1
2
3
4
5
6
SIGNAL
A0/NT OUT
A1
SDA
SCL
FAN1
FAN2
DIRECTION
Digital I/O
Digital Input
Digital I/O
Digital Input
Digital Input
Digital Input
DESCRIPTION
The lowest order programmable bit of the 2-wire bus address. This pin
functions as an output when doing a NAND TREE test.
The highest order programmable bit of the 2-wire bus address.
2-wire bus bi-directional data. Open-drain output.
2-wire bus synchronous clock.
0 to V DD amplitude fan tachometer input.
0 to V DD amplitude fan tachometer input.
An active high input from an external circuit, which latches a Chassis
Intrusion event. This line can go high without any clamping action regardless
7
CHS
Digital I/O
of the powered state of the DS1780. The DS1780 provides an internal open
drain on this line, controlled by Bit 6 of Configuration Register, to provide a
minimum 20 ms reset of this signal.
8
9
10
11
GNDD
V DD
INT
V OUT /NT IN
GROUND
POWER
Digital Output
Digital Input/
Analog Output
Internally connected to all digital circuitry.
+3.3V or +5V V DD power. Bypass with the parallel combination of 10 μF
(Electrolytic or Tantalum) and 0.1 μF (ceramic) bypass capacitors.
Active-low Programmable interrupt output. The output is enabled when Bit 1
of the Configuration Register is set to 1. The default state is disabled.
An active-high input that enables NAND Tree board-level connectivity
testing. Refer to “NAND Tree Testing” Section. Used as DAC output when
NAND Tree is not selected.
Master Reset, 5 mA open drain driver, active low output with at least a 20 ms
12
13
14
15-19
20-24
RST
GNDA
+2.5V S /+V CCP2
+xxV IN
VIDx
Digital I/O
GROUND
Analog Input
Analog Inputs
Digital Inputs
minimum pulse width. Available when enabled via Bit 4 in Configuration
Register. This is a bi-directional I/O pin. It acts as power on RESET input.
Internally connected to all analog circuitry. The ground reference for all
analog inputs.
Analog input for monitoring -12V or +V CCP2 . DS1780 will measure voltages
on this pin from 0V to 3.6V. An external resistor ladder is required for
monitoring a -12V supply (see Figure 1).
A/D inputs for 5 positive voltages.
Voltage supply readouts from the processor. These values are read in the VID
and VID4 Status Registers.
2 of 28
相关PDF资料 |
PDF描述 |
|---|---|
| DS1863K | KIT EVAL FOR DS1863 |
| DS1864K | KIT EVAL FOR DS1864 |
| DS21349DK | KIT DESIGN FOR DS21349 |
| DS21352DK | KIT DESIGN FOR DS21352 |
| DS21354DK | KIT DESIGN FOR DS21354 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS17885 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clock |
| DS17885-3 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS17885-3+ | 功能描述:实时时钟 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS17885-5 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS17885-5+ | 功能描述:实时时钟 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。