参数资料
型号: 71M6531D-IMR/F
厂商: Maxim Integrated
文件页数: 56/121页
文件大小: 0K
描述: IC ENERGY METER 128KB 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: *
Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
2.3
Battery Modes
Shortly after system power (V3P3SYS) is applied, the part will be in MISSION mode. MISSION mode
means that the part is operating with system power and that the internal PLL is stable. This mode is the
normal operation mode where the part is capable of measuring energy.
When system power is not available (i.e. when V1<VBIAS), the 71M6531 will be in one of three battery
modes: BROWNOUT, LCD, or SLEEP mode. Figure 21 shows a state diagram of the various operation
modes, with the possible transitions between modes. For information on the timing of mode transitions
refer to Figure 22 through Figure 24 .
MISSION
V3P3SYS
falls
RESET
IE_PLLRISE
IE_PLLFALL
V1 > VBIAS
V1 <= VBIAS
V3P3SYS
rises
LCD_ONLY
IE_PB
V3P3SYS
rises
BROWNOUT
IE_WAKE
RESET &
VBAT_OK
V3P3SYS
rises
PB
LCD
timer
PB
timer
SLEEP or
VBAT_OK
VBAT_OK
RESET &
VBAT_OK
VBAT_OK
SLEEP
Figure 21: Operation Modes State Diagram
When V1 falls below VBIAS or the part wakes up under battery power, the part will automatically enter
BROWNOUT mode (see Section 2.5 Wake-Up Behavior ). From BROWNOUT mode, the part may enter
either LCD mode or SLEEP mode, as controlled by the MPU via the I/O RAM bits LCD_ONLY and SLEEP .
The transition from MISSION mode to BROWNOUT mode is signaled by the IE_PLLFALL interrupt flag
(SFR 0xE8[7]). The transition in the other direction is signaled by the IE_PLLRISE interrupt flag (SFR
0xE8[6]), when the PLL becomes stable.
Meters that do not require functionality in the battery modes, e.g. meters that only use the SLEEP
mode to maintain the RTC, still need to contain code that brings the chip from BROWNOUT
mode to SLEEP mode. Otherwise, the chip remains in BROWNOUT mode once the system
power is missing and consumes more current than intended.
Similarly, meters equipped with batteries need to contain code that transitions the chip to SLEEP
mode as soon as the battery is attached in production. Otherwise, remaining in BROWNOUT
mode would unnecessarily drain the battery.
56
Rev 2
相关PDF资料
PDF描述
V48C28H75BG2 CONVERTER MOD DC/DC 28V 75W
ECA10DTKD CONN EDGECARD 20POS DIP .125 SLD
T95S334K035LZAL CAP TANT 0.33UF 35V 10% 1507
V48C28H75BG CONVERTER MOD DC/DC 28V 75W
SS8P4C-M3/87A DIODE SCHOTTKY 8A 40V SMPC
相关代理商/技术参数
参数描述
71M6531F 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC
71M6531F-DB 功能描述:开发板和工具包 - 8051 71M6531F Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压:
71M6531F-IM/F 功能描述:计量片上系统 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6531F-IM/F3 功能描述:计量片上系统 - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6531F-IM/F4 功能描述:计量片上系统 - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel