TMS570LS0432_15 Datasheet, PDF (36/110 Pages) Texas Instruments – 16- and 32-Bit RISC Flash Microcontroller

TMS570LS0432, TMS570LS0332
SPNS186B – OCTOBER 2012 – REVISED JUNE 2015
www.ti.com
6.5.1.1.1 Timing Requirements for Main Oscillator
tc(OSC)
tc(OSC_SQR)
tw(OSCIL)
tw(OSCIH)
Table 6-9. Timing Requirements for Main Oscillator
PARAMETER
Cycle time, OSCIN (when using a sine-wave input)
Cycle time, OSCIN, (when input to the OSCIN is a square
wave )
Pulse duration, OSCIN low (when input to the OSCIN is a
square wave)
Pulse duration, OSCIN high (when input to the OSCIN is a
square wave)
MIN
TYP
50
50
15
15
MAX
200
200
UNIT
ns
ns
ns
ns
6.5.1.2 Low-Power Oscillator
The Low-Power Oscillator (LPO) is comprised of two oscillators — HF LPO and LF LPO.
6.5.1.2.1 Features
The main features of the LPO are:
• Supplies a clock at extremely low power for power-saving modes. This is connected as clock source #
4 of the Global Clock Module.
• Supplies a high-frequency clock for nontiming-critical systems. This is connected as clock source # 5
of the Global Clock Module.
• Provides a comparison clock for the crystal oscillator failure detection circuit.
BIAS_EN
LFEN
LF_TRIM
HFEN
HF_TRIM
Low-Power
Oscillator
CLK80K
CLK10M
CLK10M_VALID
nPORRST
Figure 6-5. LPO Block Diagram
36
System Information and Electrical Specifications
Copyright © 2012–2015, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: TMS570LS0432 TMS570LS0332