2-34 Revision 4 Modes of Operation Standby Mode Standby mode allows periodic power-up and power-down of the FPGA fabric" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� M1AFS250-1QNG180I
寤犲晢锛� Microsemi SoC
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鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC FPGA 2MB FLASH 250K 180-QFN
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 184
绯诲垪锛� Fusion®
RAM 浣嶇附瑷�(j矛)锛� 36864
杓稿叆/杓稿嚭鏁�(sh霉)锛� 65
闁€(m茅n)鏁�(sh霉)锛� 250000
闆绘簮闆诲锛� 1.425 V ~ 1.575 V
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
宸ヤ綔婧害锛� -40°C ~ 100°C
灏佽/澶栨锛� 180-WFQFN
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 180-QFN锛�10x10锛�
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Device Architecture
2-34
Revision 4
Modes of Operation
Standby Mode
Standby mode allows periodic power-up and power-down of the FPGA fabric. In standby mode, the real-
time counter and crystal block are ON. The FPGA is not powered by disabling the 1.5 V voltage
regulator. The 1.5 V voltage regulator can be enabled when the preset count is matched. Refer to the
"Real-Time Counter (part of AB macro)" section for details. To enter standby mode, the RTC must be first
configured and enabled. Then VRPSM is shut off by deasserting the VRPU signal. The 1.5 V voltage
regulator is then disabled, and shuts off the 1.5 V output.
Sleep Mode
In sleep mode, the real-time counter and crystal blocks are OFF. The 1.5 V voltage regulator inside the
VRPSM can only be enabled by the PUB or TRST pin. Refer to the "Voltage Regulator and Power
System Monitor (VRPSM)" section on page 2-37 for details on power-up and power-down of the 1.5 V
voltage regulator.
Standby and Sleep Mode Circuit Implementation
For extra power savings, VJTAG and VPUMP should be at the same voltage as VCC, floated or ground,
during standby and sleep modes. Note that when VJTAG is not powered, the 1.5 V voltage regulator
cannot be enabled through TRST.
VPUMP and VJTAG can be controlled through an external switch. Microsemi recommends ADG839,
ADG849, or ADG841 as possible switches. Figure 2-28 shows the implementation for controlling
VPUMP. The IN signal of the switch can be connected to PTBASE of the Fusion device. VJTAG can be
controlled in same manner.
Figure 2-28 Implementation to Control VPUMP
PTBASE
PTEM
External
Pass
Transistor
2N2222
3.3 V
1.5 V
VPUMP (or JTAG)
Pin of Fusion
VPUMP (or JTAG) Supply
Fusion
ADG841
S
IN
鐩搁棞(gu膩n)PDF璩囨枡
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AFS250-1QNG180I IC FPGA 2MB FLASH 250K 180-QFN
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鍙冩暩(sh霉)鎻忚堪
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M1AFS250-1QNG256PP 鍒堕€犲晢:ACTEL 鍒堕€犲晢鍏ㄧū:Actel Corporation 鍔熻兘鎻忚堪:Actel Fusion Mixed-Signal FPGAs
M1AFS250-2FG256 鍔熻兘鎻忚堪:IC FPGA 2MB FLASH 250K 256-FBGA RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 宓屽叆寮� - FPGA锛堢従(xi脿n)鍫�(ch菐ng)鍙法绋嬮杸(m茅n)闄e垪锛� 绯诲垪:Fusion® 妯�(bi膩o)婧�(zh菙n)鍖呰:90 绯诲垪:ProASIC3 LAB/CLB鏁�(sh霉):- 閭忚集鍏冧欢/鍠厓鏁�(sh霉):- RAM 浣嶇附瑷�(j矛):36864 杓稿叆/杓稿嚭鏁�(sh霉):157 闁€(m茅n)鏁�(sh霉):250000 闆绘簮闆诲:1.425 V ~ 1.575 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 宸ヤ綔婧害:-40°C ~ 125°C 灏佽/澶栨:256-LBGA 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:256-FPBGA锛�17x17锛�
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