Maxim Integrated MAX32600, Руководство пользователя

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MAX32600 User’s Guide Analog Front End 8.2 AFE Reconfiguration Matrix
• hy_pol_comp_a – Sets the hysteresis polarity:
– 0: Comparator trips when Vp
>
Vn + Vhys
– 1: Comparator trips when Vp
<
Vn – Vhys
• bias_mode_comp_X[1:0] – Allows user to trade off comparator power for speed with four different bias current settings:
– 0: 0.52uA, 4.0us delay (default)
– 1: 1.4uA, 1.7us delay
– 2: 2.8uA, 1.1us delay
– 3: 5.1uA, 0.7us delay
• in_mode_comp_X[1:0] – Allows either or both n-channel and p-channel input stages to be selected for the low-power comparator:
– 0: Both n-channel and p-channel input stages selected (default)
– 1: Only n-channel stage input stage selected
– 2: Only p-channel stage input stage selected
– 3: Reserved
• clear_wud_comp_X – Clears the corresponding wake-up detector for the specified comparator when set to 1
• en_wud_comp_X[1:0] – Sets the comparator wakeup detector:
– 0: Wakeup detector is inactive (idle state)
– 1: Activates wakeup detector with falling edges
– 2: Activates wakeup detector with rising edges
– 3: Reserved
Each comparator has a direct output lpcmp[X] that drives into the MAX32600 logic core. The primary purpose of the low-power comparators is to provide a low-power
means for detecting external events and wake the device from low-power sleep or stop modes. Each comparator has an associated wake-up detector, set by the
en_wud_comp_X[1:0] bits and cleared with the clear_wud_comp_X bit. in_mode_comp_X[1:0] has three states that control the mode of the wakeup detector:
Wakeup Detector Set Modes
in_mode_compX[1:0] Mode
00 Idle
01 Activates on falling edge of lpcmp
10 Activates on rising edge of lpcmp
11 Reserved
Rev.1.3 April 2015 Maxim Integrated Page 352