OM13008,598 NXP Semiconductors, OM13008,598 Datasheet - Page 277

• Manufacturer Part Number: OM13008,598
• Description: BOARD LPC XPRESSO LPC122X
• Manufacturer: NXP Semiconductors
• Series: LPCXpressor

Specifications of OM13008,598

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-6642; OM13008

NXP Semiconductors
16.5 Functional description
UM10441
User manual
16.4.8 RTC interrupt clear register
16.5.1 Using the RTC in Deep-sleep or Deep power-down modes
This register is a WO register. Writing one clears the corresponding interrupt. Writing zero
has no effect.
Table 262. RTC interrupt clear register (ICR - address 0x4005 001C) bit description
The RTC can be configured to wake up the chip from Deep-sleep or Deep power-down
modes when the RTC interrupt is raised. For details, see
Always select one of the outputs of the RTC oscillator as RTC clock input if the RTC is
used to keep time in Deep-sleep or Deep power-down modes.
Remark: To obtain a valid RTC value after waking up from Deep power-down, first
perform a “dummy” read on the RTC. The next read contains the updated RTC value.
Bit
0
31:1
Symbol
RTCICR
-
All information provided in this document is subject to legal disclaimers.
Description
Raw interrupt event flag clear register. Writing one clears
the interrupt event flag. Writing 0 has no effect.
Reserved. Write as zero.
Rev. 1.1 — 10 March 2011
Chapter 16: LPC122x Real-Time Clock (RTC)
Section 4.8.3
UM10441
and
© NXP B.V. 2011. All rights reserved.
Reset value
0x0
0x0
Section
277 of 442
4.9.2.