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參數資料
| 型號： | MAX6659MEE+T |
| 廠商： | Maxim Integrated |
| 文件頁數： | 12/16頁 |
| 文件大小： | 165K |
| 描述： | IC TEMP SENSOR SMBUS 16-QSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | -55°C ~ 125°C，外部傳感器 |
| 精確度： | ±5°C（最小值） |
| 拓撲： | ADC，多路復用器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
For example, OVERT1 has a threshold set to +50癈
and is connected to a fan. OVERT2 has a threshold of
+75癈 and is connected to a system shutdown. If the
system reaches +50癈, the fan turns on, trying to cool
the system. If the system continues to heat up to the
critical temperature of +75癈, OVERT2 causes the sys-
tem to shut down.
Command Byte Functions
The 8-bit Command Byte register (Table 4) is the master
index that points to the various other registers within the
MAX6657/MAX6658/MAX6659. This registers POR state
is 0000 0000, so a Receive Byte transmission (a protocol
that lacks the command byte) occurring immediately
after POR returns the current local temperature data.
One-Shot
The one-shot command immediately forces a new con-
version cycle to begin. If the one-shot command is
received when the MAX6657/MAX6658/MAX6659 are in
software standby mode (RUN/STOP bit = 1), a new
conversion is begun, after which the device returns to
standby mode. If a conversion is in progress when a
one-shot command is received, the command is
ignored. If a one-shot command is received in autocon-
vert mode (RUN/STOP bit = 0) between conversions, a
new conversion begins, the conversion rate timer is
reset, and the next automatic conversion takes place
after a full delay elapses.
Configuration Byte Functions
The Configuration Byte register (Table 5) is a Read-Write
register with several functions. Bit 7 is used to mask (dis-
able) interrupts. Bit 6 puts the device into software stand-
by mode (STOP) or autonomous (RUN) mode. Bit 5
selects the type of external junction (set to 1 for a sub-
strate PNP on an IC or set to 0 for a discrete diode-con-
nected transistor) for optimized measurements. Bits 0 to
4 are reserved and return a zero when read.
12 ______________________________________________________________________________________
REGISTER
ADDRESS
POR STATE
FUNCTION
RLTS
00h
0000 0000
Read Internal Temperature
RRTE
01h
0000 0000
Read External Temperature
RSL
02h
1000 0000
Read Status Register
RCL
03h
0010 0000
Read Configuration Byte
RCRA
04h
0000 1000
Read Conversion Rate Byte
RLHN
05h
0100 0110
Read Internal High Limit
RLLI
06h
1100 1001
Read Internal Low Limit
RRHI
07h
0100 0110
Read External High Limit
RRLS
08h
1100 1001
Read External Low Limit
WCA
09h
0010 0000
Write Configuration Byte
WCRW
0Ah
0000 1000
Write Conversion Rate Byte
WLHO
0Bh
0100 0110
Write Internal High Limit
WLLM
0Ch
1100 1001
Write Internal Low Limit
WRHA
0Dh
0100 0110
Write External High Limit
WRLN
0Eh
1100 1001
Write External Low Limit
OSHT
0Fh
N/A
One Shot
REET
10h
0000 0000
Read External Extended Temperature
RIET
11h
0000 0000
Read Internal Extended Temperature
RWO2E
16h
0101 0101
Read/Write External OVERT2 Limit (MAX6659 only)
RW02I
17h
0101 0101
Read/Write Internal OVERT2 Limit (MAX6659 only)
RWOE
19h
0101 0101
Read/Write External OVERT1 Limit
RWOI
20h
0101 0101
Read/Write Internal OVERT1 Limit
HYST
21h
0000 1010
Overtemperature Hysteresis
FEh
4Dh
Read Manufacture ID
Table 4. Command Byte Register Assignments
?癈, SMBus-Compatible Remote/Local Temperature
Sensors with Overtemperature Alarms
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