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| 型号： | ADM1026JSTZ |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/55页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL SYS REF/EEPROM 48LQFP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation 30/Sept/2011 |
| 标准包装： | 250 |
| 功能： | 硬件监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 100°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 1131 (CN2011-ZH PDF) |
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ADM1026
Table 3. PIN ASSIGNMENT
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Mnemonic
INT
PWM
RESETSTBY
RESETMAIN
AGND
3.3 V STBY
DAC
V REF
D1–/NTESTIN
D1+
D2–/A IN9
D2+/A IN8
V BAT
+5.0 V IN
? 12 V IN
+12 V IN
+V CCP
A IN7
A IN6
A IN5
A IN4
A IN3
A IN2
A IN1
A IN0
GPIO16/THERM
GPIO15
GPIO14
GPIO13
GPIO12
GPIO11
GPIO10
Type
Digital Output
Digital Output
Digital Output
Digital I/O
Ground
Power Supply
Analog Output
Analog Output
Analog Input
Analog Input
Programmable
Programmable
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Digital I/O ?
Digital I/O ?
Digital I/O ?
Digital I/O ?
Digital I/O ?
Digital I/O ?
Digital I/O ?
Description
Interrupt Request (Open Drain). The output is enabled when Bit 1 of the
configuration register is set to 1. The default state is disabled. It has an on-chip
100 k W pullup resistor.
Open drain pulse width modulated output for control of the fan speed. This pin
defaults to high for the 100% duty cycle for use with NMOS drive circuitry. If a
PMOS device is used to drive the fan, the PWM output may be inverted by setting
Bit 1 of Test Register 1 = 1.
Power-on Reset. 5 mA driver (weak 100 k W pullup), active low output (100 k W
pullup) with a 180 ms typical pulse width. RESETSTBY is asserted whenever
3.3 V STBY is below the reset threshold. It remains asserted for approximately
180 ms after 3.3 V STBY rises above the reset threshold.
Power-on Reset. 5 mA driver (weak 100 k W pullup), active low output (100 k W
pullup) with a 180 ms typical pulse width. RESETMAIN is asserted whenever 3.3 V
MAIN is below the reset threshold. It remains asserted for approximately 180 ms
after 3.3 V MAIN rises above the reset threshold. If, however, 3.3 V STBY rises with
or before 3.3 V MAIN, then RESETMAIN remains asserted for 180 ms after
RESETSTBY is deasserted. Pin 20 also functions as an active low RESET input.
Ground pin for analog circuits.
Supplies 3.3 V power. Also monitors the 3.3 V standby power rail.
0 V to 2.5 V output for analog control of the fan speed.
Reference Voltage Output. Can be selected as 1.8 V (default) or 2.5 V.
Connected to a cathode of the first remote temperature sensing diode. If it is held
high at power-on, it activates the NAND tree test mode.
Connected to the anode of the first remote temperature sensing diode.
Connected to the cathode of the second remote temperature sensing diode or the
analog input may be reconfigured as a 0 V ? 2.5 V analog input.
Connected to the anode of the second remote temperature sensing diode, or the
analog input may be reconfigured as a 0 V ? 2.5 V analog input.
Monitors battery voltage, nominally +3.0 V.
Monitors the +5.0 V supply.
Monitors the ? 12 V supply.
Monitors the +12 V supply.
Monitors the processor core voltage (0 V to 3.0 V).
General-purpose 0 V to 2.5 V analog inputs.
General-purpose 0 V to 2.5 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose 0 V to 3.0 V analog inputs.
General-purpose I/O pin that can be configured as a digital input or output. Can
also be configured as a bidirectional THERM pin (100 k W pullup).
General-purpose I/O pin that can be configured as a digital input or output.
General-purpose I/O pin that can be configured as a digital input or output.
General-purpose I/O pin that can be configured as a digital input or output.
General-purpose I/O pin that can be configured as a digital input or output.
General-purpose I/O pin that can be configured as a digital input or output.
General-purpose I/O pin that can be configured as a digital input or output.
?GPIO pins are open drain and require external pullup resistors. Fan inputs have integrated 10 k W pullups, but these pins become open drain
when reconfigured as GPIOs.
http://onsemi.com
4
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