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参数资料
| 型号： | LM85BIMQ/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封装： | QSOP-24 |
| 文件页数： | 7/26页 |
| 文件大小： | 261K |
| 代理商： | LM85BIMQ/NOPB |
Functional Description (Continued)
4.11 Registers 44-4Dh: Voltage Limit Registers
Register
Address
Read/
Write
Register
Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
44h
R/W
2.5V Low Limit
7
6543210
00h
45h
R/W
2.5V High Limit
7
6543210
FFh
46h
R/W
V
CCP Low Limit
7
6543210
00h
47h
R/W
V
CCP High Limit
7
6543210
FFh
48h
R/W
3.3V Low Limit
7
6543210
00h
49h
R/W
3.3V High Limit
7
6543210
FFh
4Ah
R/W
5V Low Limit
7
6543210
00h
4Bh
R/W
5V High Limit
7
6543210
FFh
4Ch
R/W
12V Low Limit
7
6543210
00h
4Dh
R/W
12V High Limit
7
6543210
FFh
If a voltage input either exceeds the value set in the voltage high limit register or falls below the value set in the voltage low limit
register, the corresponding bit will be set automatically by the LM85 in the interrupt status registers (41-42h). Voltages are
presented in the registers at 34 full scale for the nominal voltage, meaning that at nominal voltage, each input will be C0h, as
shown in Table 2.
Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
TABLE 2. Voltage Limits vs Register Setting
Input
Nominal
Voltage
Register Setting at
Nominal Voltage
Maximum
Voltage
Register Reading at
Maximum Voltage
Minimum
Voltage
Register Reading at
Minimum Voltage
2.5V
C0h
3.32V
FFh
0V
00h
V
CCP
2.25V
C0h
3.00V
FFh
0V
00h
3.3V
C0h
4.38V
FFh
3.0V
AFh
5V
5.0V
C0h
6.64V
FFh
0V
00h
12V
12.0V
C0h
16.00V
FFh
0V
00h
4.12 Registers 4E-53h: Temperature Limit Registers
Register
Address
Read/
Write
Register
Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
4Eh
R/W
Processor (Zone1)
Low Temp
7
6543210
81h
4Fh
R/W
Processor (Zone1)
High Temp
7
6543210
7Fh
50h
R/W
Processor (Zone2)
Low Temp
7
6543210
81h
51h
R/W
Processor (Zone2)
High Temp
7
6543210
7Fh
52h
R/W
Processor (Zone3)
Low Temp
7
6543210
81h
53h
R/W
Processor (Zone3)
High Temp
7
6543210
7Fh
If an external temperature input or the internal temperature sensor either exceeds the value set in the corresponding high limit
register or falls below the value set in the corresponding low limit register, the corresponding bit will be set automatically by the
LM85 in the Interrupt Status Register 1 (41h). For example, if the temperature read from the Remote1 and Remote1+ inputs
exceeds the Processor (Zone1) High Temp register limit setting, Interrupt Status Register 1 ZN1 bit will be set. The temperature
limits in these registers are represented as 8 bit, 2’s complement, signed numbers in Celsius, as shown below in Table 3.
Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
LM85
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