Peripheral Simulation

For NXP (founded by Philips) LPC1768 — Real Time Clock

Simulation support for this peripheral or feature is comprised of:

• Dialog boxes which display and allow you to change peripheral configuration.

These simulation capabilities are described below.

Real-time Clock Dialog

The Pin Connect Block Dialog allow the user to configure pins P0.0 - P0.31 of the MCU based on functions required. Selecting a pin allows you to change the

The Real Time Clock Dialog shows the current state of the on-chip real-time clock (RTC). You can change the RTC settings using the controls in this dialog.

Clock Control

• CCR (Clock Control Register) holds the following settings:
• CLKEN (Clock Enable) is set to enable one of the time counters. This bit must be reset to initialize a time counter.
• CTCRST (Clock Tick Count Reset) is set to hold the Clock Tick Counter in a reset condition.

Clock Tick Counter

• CTC (Clock Tick Counter) contains the current value of the clock tick counter. 32,768 ticks of this clock equals 1 second.

Interrupt Location

• ILR (Interrupt Location Register) holds the following settings:
• RTCCIF ()
• RTCALF ()

Counter Increment Interrupt

• CIIR (Counter Increment Interrupt Register) holds the control bits for generating an interrupt when a specific counter is incremented. The following control bits are supported:
• IMSEC is set to generate an interrupt when the Second value increments.
• IMMIN is set to generate an interrupt when the Minute value increments.
• IMHOUR is set to generate an interrupt when the Hour value increments.
• IMDOM is set to generate an interrupt when the Day of Month value increments.
• IMDOW is set to generate an interrupt when the Day of Week value increments.
• IMDOY is set to generate an interrupt when the Day of Year value increments.
• IMMON is set to generate an interrupt when the Month value increments.
• IMYEAR is set to generate an interrupt when the Year value increments.

Alarm Mask

• AMR (Alarm Mask Register) allows you to disable the alarms function for the following time counters:
• AMRSEC is set to disable the Second alarm (ALSEC).
• AMRMIN is set to disable the Minute alarm (ALMIN).
• AMRHOUR is set to disable the Hour alarm (ALHOUR).
• AMRDOM is set to disable the Day of Month alarm (ALDOM).
• AMRDOW is set to disable the Day of Week alarm (ALDOW).
• AMRDOY is set to disable the Day of Year alarm (ALDOY).
• AMRMON is set to disable the Month alarm (ALMON).
• AMRYEAR is set to disable the Year alarm (ALYEAR).

Time Counter

• SEC displays the current second (0-59).
• MIN displays the current minute (0-59).
• HOUR displays the current hour (0-23).
• DOM displays the current day of the month. This value will be 1-28, 29, 30 or 31 depending on the month and leap year.
• DOW displays the current day of the week (0-6).
• DOY displays the current day of the year (1-365 or 1-366 for a leap year).
• MONTH displays the current month (1-12).
• YEAR displays the current year (0-4095).

Alarm This group contains the alarm values for triggering alarm interrupts. The alarm mask bits (AMR) must be reset for an alarm interrupt to occur.

• ALSEC is the Seconds alarm value.
• ALMIN is the Minutes alarm value.
• ALHOUR is the Hour alarm value.
• ALDOM is the Day of Month alarm value.
• ALDOW is the Day of Week alarm value.
• ALDOY is the Day of Year alarm value.
• ALMONTH is the Month alarm value.
• ALYEAR is the Year alarm value.

Consolidated Time

• CTIME0 (Consolidated Time Register 0) contains the current value of the Seconds (SEC), Minutes (MIN), Hours (HOUR) and Day of Week (DOW) time counters.
• CTIME1 (Consolidated Time Register 1) contains the current value of the Day of Month (DOM), Month (MON) and Year (YEAR) time counters.
• CTIME2 (Consolidated Time Register 2) contains the current value of the Day of Year (DOY) time counter.

Prescaler

• PREINT contains the integer portion of the Prescale Value. This value equals int(PCLK / 32768) - 1.
• PREFRAC contains the fractional portion of the Prescale value. This value equals PCLK - ((PREINT+ 1) x 32768)
• 1s Tick (s) displays the resulting number of 1-second ticks for the Prescaler using the PREINT and PREFRAC values.

function for that pin.

Selected Pin

• P0.x (Pin Name) lists the function choices available for the selected pin.

Pin Select

• PINSELx (Pin Selection Registers 0-1) contain the composite bit settings for the 32 Port 0 bits.

Open Drain Mode Control

• PINMODE_ODx (Pin Open Drain Mode Registers) contain the bit settings for those pins configured to open drain mode (pin=1).