参数资料
| 型号： | 71M6521FE-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 58/107页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO FOR 71M6521FE |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | 71M6521 |
| 已供物品： | 2 个板，线缆，CD，电源 |
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71M6521DE/DH/FE Data Sheet
Wake on PB
If the part is in SLEEP or LCD mode, it can be awakened by a rising edge on the PB pin. This pin is normally pulled to
GND and can be pulled high by a push button depression. Before the PB signal rises, the MPU is in reset due to the
internal signal WAKE being low. When PB rises, WAKE rises and within three crystal cycles, the MPU begins to
execute. The MPU can determine whether the PB signal woke it up by checking the IE_PB flag.
For debouncing, the PB pin is monitored by a state machine operating from a 32Hz clock. This circuit will reject
between 31ms and 62ms of noise. Detection hardware will ignore all transitions after the initial rising edge. This will
continue until the MPU clears the IE_PB bit.
System
Power
(V3P3SYS)
PB or wake-
up timer
WAKE
15 CK32
cycles
MPU Mode
PLL_OK
LCD
BROWNOUT
time
Figure 25: Wake Up Timing
Wake on Timer
If the part is in SLEEP or LCD mode, it can be awakened by the wake-up timer. Until this timer times out, the MPU is
in reset due to WAKE being low. When the wake-up timer times out, the WAKE signal rises and within three crystal
cycles, the MPU begins to execute. The MPU can determine whether the timer woke it by checking the AUTOWAKE
interrupt flag ( IE_WAKE ).
The wake-up timer begins timing when the part enters LCD or SLEEP mode. Its duration is controlled by
WAKE_PRD[2:0] and WAKE_RES . WAKE_RES selects a timer LSB of either 1 minute ( WAKE_RES =1) or 2.5 seconds
( WAKE_RES =0). WAKE_PRD[2:0] selects a duration of from 1 to 7 LSBs.
The timer is armed by WAKE_ARM =1. It must be armed at least three RTC cycles before SLEEP or LCD_ONLY is
initiated. Setting WAKE_ARM presets the timer with the values in WAKE_RES and WAKE_PRD and readies the timer
to start when the MPU writes to SLEEP or LCD_ONLY . The timer is reset and disarmed whenever the MPU is awake.
Thus, if it is desired to wake the MPU periodically (every 5 seconds, for example) the timer must be rearmed every
time the MPU is awakened.
Page: 58 of 107
Rev 3
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6531F-DB | BOARD DEMO 71M6531F |
| 71M6533-DB | BOARD DEMO 71M6533 |
| 71M6534H-DB | BOARD DEMO 71M6534H |
| 71M6541F-DB | DEMO BOARD 71M6541F |
| 71M6543F-DB-CT | DEMO BOARD 71M6543F-DB-CT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6521FE-IGT | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IGT/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 |
| 71M6521FE-IGT/F1 | 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 |
| 71M6521FE-IGTR | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IGTR/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 |
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