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diff --git a/spec/acfg/opt/RTEMS-ACFG-OPT-MICROSECONDSPERTICK.yml b/spec/acfg/opt/RTEMS-ACFG-OPT-MICROSECONDSPERTICK.yml
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+SPDX-License-Identifier: CC-BY-SA-4.0
+active: true
+appl-config-option-data-type: |
+  Unsigned integer (``uint32_t``).
+appl-config-option-default-value: |
+  This is not defined by default. When not defined, the clock tick quantum is
+  configured to be 10,000 microseconds which is ten (10) milliseconds.
+appl-config-option-description: |
+  This constant is  used to specify the length of time between clock ticks.
+
+  When the clock tick quantum value is too low, the system will spend so much
+  time processing clock ticks that it does not have processing time available
+  to perform application work. In this case, the system will become
+  unresponsive.
+
+  The lowest practical time quantum varies widely based upon the speed of the
+  target hardware and the architectural overhead associated with
+  interrupts. In general terms, you do not want to configure it lower than is
+  needed for the application.
+
+  The clock tick quantum should be selected such that it all blocking and
+  delay times in the application are evenly divisible by it. Otherwise,
+  rounding errors will be introduced which may negatively impact the
+  application.
+appl-config-option-index:
+- tick quantum
+appl-config-option-name: CONFIGURE_MICROSECONDS_PER_TICK
+appl-config-option-notes: |
+  This configuration parameter has no impact if the Clock Tick Device driver
+  is not configured.
+
+  There may be BSP specific limits on the resolution or maximum value of a
+  clock tick quantum.
+appl-config-option-range: |
+  Positive.
+copyrights:
+- Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
+derived: false
+enabled-by: []
+header: ''
+interface-type: appl-config-option
+level: 1.77
+links:
+- RTEMS-ACFG-GENERAL: B6rbi_eXOZOzB3o8-DYzrc0JmF7ON1adlcZj3dQd6WY=
+normative: true
+ref: ''
+reviewed: GqXZMXycg_UHwy-SmYMFCIlzwHz8QsGCzR4tR8X85pw=
+text: ''
+type: interface