Texas Instruments TM4C1294NCPDT User Manual

are accessed. In addition, the CLK32EN bit in the HIBCTL register must be set before accessing
any other Hibernation module register.
Note: Except for the HIBIO and a portion of the HIBIC register, all other Hibernation module
registers are on the Hibernation module clock domain and have special timing requirements.
Software should make use of the WRC bit in the HIBCTL register to ensure that the required
timing gap has elapsed. If the WRC bit is clear, any attempted write access is ignored. See
“Register Access Timing” on page 535. The HIBIO register and bits RSTWK, PADIOWK and
WC of the HIBIC register do not require waiting for write to complete. Because these registers
are clocked by the system clock, writes to these registers/bits are immediate.
Writing to registers other than the HIBCTL and HIBIM before the CLK32EN bit in the HIBCTL
register has been set may produce unexpected results.
Important: The Hibernation module registers are reset under two conditions:
1. Any type of system reset (if the RTCEN and the PINWEN bits in the HIBCTL register
are clear and the TPEN bit in the HIBTPCTL register is clear).
2. A cold POR occurs when both the V
DD
and V
BAT
supplies are removed.
Any other reset condition is ignored by the Hibernation module.
Note that the following registers are only accessed through privileged mode (see “System
Control” on page 220 for more details):
■ HIBTPCTL
■ HIBPTSTAT
■ HIBTPIO
■ HIBTPLOG
■ Upper eight words of memory (HIBDATA register 0x50 to 0x6F)
Table 7-3. Hibernation Module Register Map
See
page
DescriptionResetTypeNameOffset
554Hibernation RTC Counter0x0000.0000ROHIBRTCC0x000
555Hibernation RTC Match 00xFFFF.FFFFRWHIBRTCM00x004
556Hibernation RTC Load0x0000.0000WOHIBRTCLD0x00C
557Hibernation Control0x8000.2000RWHIBCTL0x010
562Hibernation Interrupt Mask0x0000.0000RWHIBIM0x014
564Hibernation Raw Interrupt Status0x0000.0000ROHIBRIS0x018
566Hibernation Masked Interrupt Status0x0000.0000ROHIBMIS0x01C
568Hibernation Interrupt Clear0x0000.0000RW1CHIBIC0x020
570Hibernation RTC Trim0x0000.7FFFRWHIBRTCT0x024
571Hibernation RTC Sub Seconds0x0000.0000RWHIBRTCSS0x028
June 18, 2014552
Texas Instruments-Production Data
Hibernation Module

Texas Instruments TM4C1294NCPDT Specifications

General

Brand	Texas Instruments
Model	TM4C1294NCPDT
Category	Microcontrollers
Language	English