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| 型号： | DS1780E+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/28页 |
| 文件大小： | 0K |
| 描述： | IC CPU PERIPHERAL MON 24-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 62 |
| 功能： | 温度监控器，CPU 外围设备 |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±12°C（最小值） |
| 拓扑： | ADC（三角积分型），比较器，风扇速度控制，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 2.8 V ~ 5.75 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1436 (CN2011-ZH PDF) |
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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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1780E/T&R | 制造商:Maxim Integrated Products 功能描述:PC HARDWARE MONITOR T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CPU PERIPHERAL MON 24-TSSOP |
| DS1780E/T&R | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1780E/TR | 制造商:Maxim Integrated Products 功能描述:Data Acquisition System, 6 Channel, 8 Bit, 24 Pin, Plastic, TSSOP |
| DS1780E+ | 功能描述:板上安装温度传感器 CPU Peripheral Monitor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1780E+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 24TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CPU PERIPHERAL MON 24-TSSOP 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors CPU Peripheral Monitor |
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