K20P144M120SF3 Datasheet, PDF (33/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
Table 17. 32kHz oscillator DC electrical specifications (continued)
Symbol
C_para
V_pp1
Description
Parasitical capacitance of EXTAL32 and XTAL32
Peak-to-peak amplitude of oscillation
Min.
—
—
Typ.
5
0.6
Max.
Unit
7
pF
—
V
1. The EXTAL32 and XTAL32 pins should only be connected to required oscillator components and must not be connected to
any other devices.
6.3.3.2 32kHz oscillator frequency specifications
Table 18. 32kHz oscillator frequency specifications
Symbol
f_{osc_lo}
t_start
Description
Oscillator crystal
Crystal start-up time
Min.
Typ.
Max.
Unit
—
32.768
—
kHz
—
1000
—
ms
1. Proper PC board layout procedures must be followed to achieve specifications.
Notes
1
6.4 Memories and memory interfaces
6.4.1 Flash (FTFE) electrical specifications
This section describes the electrical characteristics of the FTFE module.
6.4.1.1 Flash timing specifications — program and erase
The following specifications represent the amount of time the internal charge pumps are
active and do not include command overhead.
Table 19. NVM program/erase timing specifications
Symbol
t_hvpgm4
t_hversscr
t_hversblk
Description
Program Phrase high-voltage time
Erase Flash Sector high-voltage time
Erase Flash Block high-voltage time
Min.
—
—
—
Typ.
7.5
13
425
Max.
TBD
TBD
TBD
Unit
Notes
μs
ms
1
ms
1
1. Maximum time based on expectations at cycling end-of-life.
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
Freescale Semiconductor, Inc.
Preliminary
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