Datasheet

5.4.2.4.2 32 kHz oscillator frequency specifications
Table 59. 32 kHz oscillator frequency specifications
Symbol Description Min. Typ. Max. Unit Notes
f
osc_lo
Oscillator crystal — 32.768 — kHz
t
start
Crystal start-up time — 1000 — ms 1
f
ec_extal32
Externally provided input clock frequency — 32.768 — kHz 2
v
ec_extal32
Externally provided input clock amplitude 700 — V
BAT
mV 2, 3
1. Proper PC board layout procedures must be followed to achieve specifications.
2. This specification is for an externally supplied clock driven to EXTAL32 and does not apply to any other clock input.
The oscillator remains enabled and XTAL32 must be left unconnected.
3. The parameter specified is a peak-to-peak value and V
IH
and V
IL
specifications do not apply. The voltage of the
applied clock must be within the range of V
SS
to V
BAT
.
5.4.3 Memories and memory interfaces
5.4.3.1 QuadSPI AC specifications
• All data is based on a negative edge data launch from the device and a positive
edge data capture, as shown in the timing diagrams in this section.
• Measurements are with a load of 15pf (1.8V) and 35pf (3V) on output pins. Input
slew: 1ns
• Timings assume a setting of 0x0000_000x for QuadSPI _SMPR register (see the
reference manual for details).
The following table lists the QuadSPI delay chain read/write settings. Please see the
device reference manual for register and bit descriptions.
Table 60. QuadSPI delay chain read/write settings
Mode QuadSPI registers Notes
QuadSPI_MCR[DQ
S_EN]
QuadSPI_SOCCR[
SOCCFG]
QuadSPI_MCR[SC
LKCFG]
QuadSPI_FLSHC
R[TDH]
SDR Yes 3Fh 5 No Delay of 63
buffer and 64
mux
DDR Yes 3Fh 1 2 Delay of 63
buffer and 64
mux
Hyperflash RDS driven from
Flash
0h No 2 Delay of 1 mux
SDR mode
Electrical characteristics
Kinetis KL82 Microcontroller, Rev. 3, 08/2016
95
NXP Semiconductors