參數(shù)資料
型號(hào): 71M6543G-IGTR/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP100
封裝: LEAD FREE, LQFP-100
文件頁數(shù): 135/157頁
文件大?。?/td> 2178K
代理商: 71M6543G-IGTR/F
71M6543F/H and 71M6543G/GH Data Sheet
v1.2
2008–2011 Teridian Semiconductor Corporation
79
3.2.3
SLP Mode
The SLP mode may be commanded by the MPU whenever main system power is absent by asserting the
SLEEP bit (I/O RAM 0x28B2[7]). The purpose of the SLP mode is to consume the least power while still
maintaining the RTC, temperature compensation of the RTC, and the non-volatile portions of the I/O RAM.
In SLP mode, the V3P3D pin is disconnected, removing all sources of leakage from VBAT and V3P3SYS.
The non-volatile memory domain and the basic functions, such as temperature sensor, oscillator, and
RTC, are powered by the VBAT_RTC input. In this mode, the I/O configuration bits, LCD configuration
bits, and NV RAM values are preserved and RTC and oscillator continue to run. This mode can be exited
only by system power-up or one of the wake methods described in 3.4 Wake-Up Behavior.
If the SLEEP bit is asserted when V3P3SYS pin power is present (i.e., while in MSN mode), the 71M6543
enters SLP mode, resetting the internal WAKE signal, at which point the 71M6543 begins the standard
wake from sleep procedures as described in 3.4 Wake-Up Behavior.
After the transition from SLP mode to MSN or BRN mode the PC is at 0x0000, the XRAM is in an
undefined state, and the I/O RAM is only partially preserved (see the description of I/O RAM states in
5.2). The non-volatile sections of the I/O RAM are preserved unless RESET goes high.
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