lh79520 NXP Semiconductors, lh79520 Datasheet - Page 48

• Manufacturer Part Number: lh79520
• Description: Lh79520 System-on-chip
• Manufacturer: NXP Semiconductors

LH79520
Reset, Clock, and Power Controller
(RCPC) Waveforms
when coming out of Reset or Power On.
gives the timing parameters.
48
tOSC32
tOSC14
tRSTIW
tRSTOV
tRSTIH
tRSTOH
PARAMETER
Figure 29 shows the method the LH79520 uses
Figure 30 shows external reset timing, and Table 13
nRESETO
nRESETI
XTAL32
XTAL14
VDDC
nRESETIN
nRESETO
Oscillator stabilization time after Power Up (VDDC = VDDCMIN)
Oscillator stabilization time after Power Up (VDDC = VDDCMIN)
nRESETIN Pulse Width (once sampled LOW)
nRESETIN LOW to nRESETOUT valid
(once nRESETIN sampled LOW)
nRESETOUT hold relative to nRESETIN HIGH
nRESETIN hold extend to allow PLL to lock once XTAL is stable
VDDCmin
tOSC14
tRSTOV
DESCRIPTION
Table 13. Reset AC Timing
Figure 30. External Reset
Figure 29. PLL Start-up
Rev. 01 — 16 July 2007
NXP Semiconductors
tRSTIH
tOSC32
tRSTIW
tRSTOH
tRSTOH
MIN.
2
TYP.
Preliminary data sheet
3.5
1
System-on-Chip
MAX.
550
2.5
10
HCLK
HCLK
HCLK
UNIT
ms
ms
79520-37
79520-60
µs