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参数资料
| 型号： | MAX6890ETI |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors |
| 中文描述： | 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC28 |
| 封装： | 5 X 5 MM, TQFN-28 |
| 文件页数： | 22/40页 |
| 文件大小： | 255K |
| 代理商： | MAX6890ETI |
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MAX6889/MAX6890/MAX6891
EEPROM-Programmable, Octal/Hex/Quad,
Power-Supply Sequencers/Supervisors
______________________________________________________________________________________
29
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT
RANGE
DESCRIPTION
[0]
0 = Write is not disabled if PO1 asserts
1 = Write disabled if PO1 asserts
[1]
0 = Write is not disabled if PO2 asserts
1 = Write disabled if PO2 asserts
[2]
0 = Write is not disabled if PO3 asserts
1 = Write disabled if PO3 asserts
[3]
0 = Write is not disabled if PO4 asserts
1 = Write disabled if PO4 asserts
[4]
0 = Write is not disabled if PO5 asserts
1 = Write disabled if PO5 asserts
[5]
0 = Write is not disabled if PO6 asserts
1 = Write disabled if PO6 asserts
[6]
0 = Write is not disabled if PO7 asserts
1 = Write disabled if PO7 asserts
2Ch
ACh
[7]
0 = Write is not disabled if PO8 asserts
1 = Write disabled if PO8 asserts
[0]
0 = Write is not disabled if PO9 asserts
1 = Write disabled if PO9 asserts
[1]
0 = Write is not disabled if PO10 asserts
1 = Write disabled if PO10 asserts
2Dh
ADh
[7:2]
Not used
Table 23. Write Disable Register
Configuring the
MAX6889/MAX6890/MAX6891
The MAX6889/MAX6890/MAX6891 factory-default con-
figuration sets all registers to 0h, except bits in Tables
17 and 18, which are set to 1h. Factory-default configu-
ration sets all PO_’s as active-high, open drain (all out-
puts are high impedance until the device is configured
by the user). Each device requires configuration before
full power is applied to the system. To configure the
MAX6889/MAX6890/MAX6891, first apply an input volt-
age to IN1, or one of IN2–IN5 or VCC (see the Powering
the MAX6889/MAX6890/MAX6891 section). VIN1 > 4V,
or one of VIN2–VIN5 or VCC > 2.7V to ensure device
operation. Next, transmit data through the serial inter-
face. Use the block write protocol to quickly configure
the device. Write to the configuration registers first to
ensure the device is configured properly. After com-
pleting the setup procedure, use the read word or
block read protocol to read back the data from the con-
figuration registers. Lastly, use the write byte or block
write protocol to write this data to the EEPROM regis-
ters. After completing the EEPROM register configura-
tion, apply full power to the system to begin normal
operation. The nonvolatile EEPROM stores the latest
configuration upon removal of power. Write 0s to all
EEPROM registers to clear the memory.
Software Reboot
A software reboot allows the user to restore the EEPROM
configuration to the volatile registers without cycling the
power supplies. Use the send byte command with data
byte C4h to initiate a software reboot. The 3ms (max)
power-up delay also applies after a software reboot.
Configuration EEPROM
The configuration EEPROM addresses range from 80h
to AEh. Write data to the configuration EEPROM to auto-
matically set up the MAX6889/MAX6890/MAX6891 upon
power-up. Data is transferred from the configuration
EEPROM to the configuration registers when VCC
exceeds UVLO during power-up or after a software
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6891ETP | EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors |
| MG200-BCG24HD | T-1 3/4 SINGLE COLOR LED, GREEN, 5.1 mm |
| MG200-BCG24H | T-1 3/4 SINGLE COLOR LED, GREEN, 5.1 mm |
| MG200-BCG28HD | T-1 3/4 SINGLE COLOR LED, GREEN, 5.1 mm |
| MG200-BCG5H | T-1 3/4 SINGLE COLOR LED, GREEN, 5.1 mm |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6890ETI+ | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6890ETI-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6891ETP | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6891ETP+ | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6891ETP+T | 功能描述:监控电路 EEPROM-Programmable Octal/Hex/Quad Power-Supply Sequencers/Supervisors RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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