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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ST7LITEUS5 Datenblatt(PDF) 57 Page - STMicroelectronics |
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ST7LITEUS5 Datenblatt(HTML) 57 Page - STMicroelectronics |
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57 / 136 page  Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) ST7LITEUS2, ST7LITEUS5 Power saving modes 57/136 8.5.1 Register description AWUFH Control/ Status register (AWUCSR) Reset value: 0000 0000 (00h) AWUFH Prescaler register (AWUPR) Reset value: 1111 1111 (FFh) 7 0 0000 0 AWU F AWUM AWUEN Read/Write Bits 7:3 Reserved Bit 2 AWUF Auto-wakeup Flag This bit is set by hardware when the AWU module generates an interrupt and cleared by software on reading AWUCSR. Writing to this bit does not change its value. 0: No AWU interrupt occurred 1: AWU interrupt occurred Bit 1 AWUM Auto-wakeup Measurement This bit enables the AWU RC oscillator and connects its output to the input capture of the 8-bit Lite timer. This allows the timer to be used to measure the AWU RC oscillator dispersion and then compensate this dispersion by providing the right value in the AWUPRE register. 0: Measurement disabled 1: Measurement enabled Bit 0 AWUEN Auto-wakeup From Halt Enabled This bit enables the Auto-wakeup From Halt feature: once Halt mode is entered, the AWUFH wakes up the microcontroller after a time delay dependent on the AWU prescaler value. It is set and cleared by software. 0: AWUFH (Auto-wakeup From Halt) mode disabled 1: AWUFH (Auto-wakeup From Halt) mode enabled Note: Whatever the clock source, this bit should be set to enable the AWUFH mode once the HALT instruction has been executed. 7 0 AWUPR7 AWUPR6 AWUPR5 AWUPR4 AWUPR3 AWUPR2 AWUPR1 AWUPR0 Read/Write Bits 7:0 AWUPR[7:0] Auto-wakeup Prescaler These 8 bits define the AWUPR Dividing factor (see Table 15: Configuring the dividing factor) Obsolete Product(s) - Obsolete Product(s) |
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