LPC2210 Philips Semiconductors (Acquired by NXP), LPC2210 Datasheet - Page 22

• Manufacturer Part Number: LPC2210
• Description: 16/32-bit Arm Microcontroller; With 10-bit ADC And External Memory Interfacethe LPC2210 is Based on a 16/32 Bit ARM7TDMI-STM Cpu With Real-time Emulation And Embedded Trace Support. For Critical Code Size Applications, The Alternative 16-bit Thumb Mo
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
9397 750 12872
Preliminary data
6.16.1 Features
6.17.1 Features
6.16 Watchdog timer
6.17 Real time clock
6.18 Pulse width modulator
The purpose of the Watchdog is to reset the microcontroller within a reasonable
amount of time if it enters an erroneous state. When enabled, the Watchdog will
generate a system reset if the user program fails to ‘feed’ (or reload) the Watchdog
within a predetermined amount of time.
The Real Time Clock (RTC) is designed to provide a set of counters to measure time
when normal or idle operating mode is selected. The RTC has been designed to use
little power, making it suitable for battery powered systems where the CPU is not
running continuously (Idle mode).
The PWM is based on the standard Timer block and inherits all of its features,
although only the PWM function is pinned out on the LPC2210. The Timer is
designed to count cycles of the peripheral clock (PCLK) and optionally generate
interrupts or perform other actions when specified timer values occur, based on
seven match registers. The PWM function is also based on match register events.
The ability to separately control rising and falling edge locations allows the PWM to
be used for more applications. For instance, multi-phase motor control typically
requires three non-overlapping PWM outputs with individual control of all three pulse
widths and positions.
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Internally resets chip if not periodically reloaded.
Debug mode.
Enabled by software but requires a hardware reset or a Watchdog reset/interrupt to
be disabled.
Incorrect/Incomplete feed sequence causes reset/interrupt if enabled.
Flag to indicate Watchdog reset.
Programmable 32-bit timer with internal pre-scaler.
Selectable time period from (t
t
Measures the passage of time to maintain a calendar and clock.
Ultra Low Power design to support battery powered systems.
Provides Seconds, Minutes, Hours, Day of Month, Month, Year, Day of Week, and
Day of Year.
Programmable Reference Clock Divider allows adjustment of the RTC to match
various crystal frequencies.
pclk
4.
Rev. 01 — 09 February 2004
16/32-bit ARM microcontrollers with external memory interface
pclk
256
4) to (t
pclk
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
2
32
4) in multiples of
LPC2210
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