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参数资料
| 型号： | MAX16070ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 33/52页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM MANAGER 12CH 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电源监控器 |
| 电源电压： | 2.8 V ~ 14 V |
| 电流 - 电源： | 4.5mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
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12-Channel/8-Channel, Flash-Configurable System
Managers with Nonvolatile Fault Registers
Packet Error Checking (PEC)
The MAX16070/MAX16071 feature a PEC mode that is
useful for improving the reliability of the communication
bus by detecting bit errors. By enabling PEC, an extra
CRC-8 error check byte is added in the data string dur-
ing each read and/or write sequence. Enable PEC by
writing a ‘1’ to r8Bh[7].
The CRC-8 byte is calculated using the polynomial
C = X 8 + X 2 + X + 1
The PEC calculation includes all bytes in the transmis-
sion, including address, command, and data. The PEC
calculation does not include ACK, NACK, START, STOP,
or REPEATED START.
Command Codes
The MAX16070/MAX16071 use eight command codes
for block read, block write, and other commands. See
Table 21 for a list of command codes.
To initiate a software reboot, send A7h using the send byte
format. A software-initiated reboot is functionally the same
as a hardware-initiated power-on reset. During boot-up,
flash configuration data in the range of 230h to 28Ch is
copied to r30h to r8Ch registers in the default page.
Send command code A8h to trigger a fault store to flash.
Configure the Critical Fault Log Control register (r6Dh) to
store ADC conversion results and/or fault flags.
While in the flash page, send command code A9h to
access the flash page (addresses from 200h to 28Dh).
Once command code A9h has been sent, all addresses
are recognized as flash addresses only. Send command
code AAh to return to the default page (addresses from
000h to 08Dh). Send command code ABh to access
the user flash-page (addresses from 300h to 39Fh and
3B0h–3FFh), and send command code ACh to return to
the flash page.
Table 21. Command Codes
Restrictions When Writing to Flash
Flash must be written to 8 bytes at a time. The initial
address must be aligned to 8-byte boundaries—the
three LSBs of the initial address must be ‘000.’ Write the
8 bytes using a single block-write command or using 8
successive Write Byte commands.
Send Byte
The send byte protocol allows the master device to send
one byte of data to the slave device (see Figure 11). The
send byte presets a register pointer address for a subse-
quent read or write. The slave sends a NACK instead of
an ACK if the master tries to send a memory address or
command code that is not allowed. If the master sends
A5h or A6h, the data is ACK, because this could be the
start of the write block or read block. If the master sends
a STOP condition before the slave asserts an ACK, the
internal address pointer does not change. If the master
sends A7h, this signifies a software reboot. The send
byte procedure is the following:
1) The master sends a START condition.
2) The master sends the 7-bit slave address and a write
bit (low).
3) The addressed slave asserts an ACK on SDA.
4) The master sends an 8-bit memory address or com-
mand code.
5) The addressed slave asserts an ACK (or NACK) on SDA.
6) The master sends a STOP condition.
COMMAND
CODE
A5h
A6h
A7h
A8h
A9h
AAh
ABh
ACh
ACTION
Block write
Block read
Reboot flash in register file
Trigger emergency save to flash
Flash page access ON
Flash page access OFF
User flash access ON (must be in flash page already)
User flash access OFF (return to flash page)
______________________________________________________________________________________
33
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相关代理商/技术参数 |
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| MAX16071ETL+ | 功能描述:电流和电力监控器、调节器 8Ch System Monitor w/NV Fault Registers RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX16071ETL+T | 功能描述:电流和电力监控器、调节器 8Ch System Monitor w/NV Fault Registers RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX16072RS15D0+T | 功能描述:监控电路 uP Supervisor 1.58V Trip 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 |
| MAX16072RS15D1+T | 功能描述:监控电路 uP Supervisor 1.58V Trip 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 |
| MAX16072RS15D2+T | 功能描述:监控电路 uP Supervisor 1.58V Trip 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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