TM4C1233E6PM Datasheet, PDF (469/1214 Pages) Texas Instruments – Tiva Microcontroller

Tiva^™ TM4C1233E6PM Microcontroller
7.1
Block Diagram
Figure 7-1. Hibernation Module Block Diagram
XOSC0
XOSC1
WAKE
HIBCTL.CLK32EN
Pre-Divider
HIBRTCT
Battery-Backed
Memory
16 words
HIBDATA
RTC
HIBRTCC
HIBRTCLD
HIBRTCM0
HIBRTCSS
HIBCTL.RTCEN
Interrupts
HIBIM
HIBRIS
HIBMIS
HIBIC
MATCH
LOWBAT
Low Battery
Power
V_BAT
Detect
Sequence
Logic
Clock Source for
System Clock
Interrupts
to CPU
HIB
HIBCTL.VBATSEL
HIBCTL.BATCHK
HIBCTL.RTCWEN
HIBCTL.PINWEN
HIBCTL.VABORT
HIBCTL.HIBREQ
HIBCTL.BATWKEN
7.2 Signal Description
The following table lists the external signals of the Hibernation module and describes the function
of each.
Table 7-1. Hibernate Signals (64LQFP)
Pin Name
GNDX
Pin Number Pin Mux / Pin
Assignment
35
fixed
HIB
VBAT
WAKE
33
fixed
37
fixed
32
fixed
Pin Type
-
O
-
I
Buffer Type^a Description
Power
TTL
Power
TTL
GND for the Hibernation oscillator. When using a
crystal clock source, this pin should be connected
to digital ground along with the crystal load
capacitors. When using an external oscillator, this
pin should be connected to digital ground.
An output that indicates the processor is in
Hibernate mode.
Power source for the Hibernation module. It is
normally connected to the positive terminal of a
battery and serves as the battery
backup/Hibernation module power-source supply.
An external input that brings the processor out of
Hibernate mode when asserted.
June 12, 2014
469
Texas Instruments-Production Data