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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST72344S2 데이터시트(PDF) 73 Page - STMicroelectronics |
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ST72344S2 데이터시트(HTML) 73 Page - STMicroelectronics |
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73 / 247 page  ST72344xx, ST2345xx Power-saving modes Doc ID 12321 Rev 6 73/247 9.7.2 AWUFH prescaler register (AWUPR) Reset value: 1111 1111 (FFh) Bits 7:0= AWUPR[7:0] Auto-wakeup Prescaler These 8 bits define the AWUPR Dividing factor, as explained below: In AWU mode, the period that the MCU stays in Halt mode (tAWU in Figure 33) is defined by This prescaler register can be programmed to modify the time that the MCU stays in Halt mode before waking up automatically. 7 0 AWUPR7 AWUPR6 AWUPR5 AWUPR4 AWUPR3 AWUPR2 AWUPR1 AWUPR0 Read/Write Table 24. AWUPR dividing factor AWUPR[7:0] Dividing factor 00h Forbidden (1) 1. If 00h is written to AWUPR, depending on the product, an interrupt is generated immediately after a HALT instruction, or the AWUPR remains unchanged. 01h 1 ... ... FEh 254 FFh 255 t AWU 64 AWUPR × 1 f AWURC --------------------------t RCSTRT + × = Table 25. AWU register map and reset values Address (Hex.) Register label 765 432 1 0 002Eh AWUCSR Reset value 000 00 AWUF 0 AWUM 0 AWUEN 0 002Fh AWUPR Reset value AWUPR7 1 AWUPR6 1 AWUPR5 1 AWUPR4 1 AWUPR3 1 AWUPR2 1 AWUPR1 1 AWUPR0 1 |
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