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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： | 24/40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
30
______________________________________________________________________________________
STOP
CONDITION
REPEATED START
CONDITION
START
CONDITION
tHIGH
tLOW
tR
tF
tSU:DAT
tSU:STA
tSU:STO
tHD:STA
tBUF
tHD:STA
tHD:DAT
SCL
SDA
START
CONDITION
Figure 3. Serial-Interface Timing Details
reboot. After VCC exceeds UVLO, an internal 1MHz
clock starts after a 5s delay, and data transfer begins.
Data transfer disables access to the configuration regis-
ters and EEPROM. The data transfer from EEPROM to
configuration registers takes 3ms (max). Read configu-
ration EEPROM data at any time after power-up or soft-
ware reboot. Write commands to the configuration
EEPROM are allowed at any time after power-up or soft-
ware reboot, unless the configuration lock bit is set (see
Table 22). The maximum cycle time to write a single
byte is 11ms (max).
User EEPROM
The 512-bit, user-EEPROM addresses range from 40h to
7Fh (see Figure 2). Store software revision data, board
revision data, and other data in these registers. The max-
imum cycle time to write a single byte is 11ms (max).
Configuration Register Bank and EEPROM
The configuration registers can be directly modified
through the serial interface without modifying the
EEPROM, after the power-up procedure terminates and
the configuration EEPROM data has been loaded into the
configuration register bank. Use the write byte or block
write protocols to write directly to the configuration regis-
ters. Changes to the configuration registers take effect
immediately and are lost upon power removal.
At device power-up, the register bank loads configura-
tion data from the EEPROM. Configuration data may be
directly altered in the register bank during application
development, allowing maximum flexibility. Transfer the
new configuration data byte-by-byte to the configura-
tion EEPROM with the write byte protocol. The next
device power-up or software reboot automatically loads
the new configuration.
SMBus/I2C-Compatible Serial Interface
The MAX6889/MAX6890/MAX6891 feature an I2C/SMBus-
compatible 2-wire serial interface consisting of a serial
data line (SDA) and a serial clock line (SCL). SDA and
SCL facilitate bidirectional communication between the
MAX6889/MAX6890/MAX6891 and the master device at
clock rates up to 400kHz. Figure 3 shows the 2-wire inter-
face timing diagram. The MAX6889/MAX6890/MAX6891
are transmit/receive slave-only devices, relying upon a
40h
USER EEPROM
7Fh
80h
CONFIGURATION
EEPROM
AEh
00h
REGISTER BANK
37h
RESERVED
Figure 2. Memory Map
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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