S9S08SG8E2MSC Datasheet, PDF (309/320 Pages) Freescale Semiconductor, Inc – MC9S08SG8 MC9S08SG4 Data Sheet Addendum

Appendix A Electrical Characteristics
A.12 AC Characteristics
This section describes ac timing characteristics for each peripheral system.
A.12.1 Control Timing
Table A-13. Control Timing
Nu
m
C
Rating
Temp
Rated²
Symbol
Min
Typ¹
Max
Unit
Sta
ndar
d
AE
C
Gra
de 0
Bus frequency (t_cyc = 1/f_Bus)
1D
–40 C to 125 C
f_Bus
>125 C
20
x
dc
—
MHz
18
x
Internal low power oscillator period
2D
–40 C to 125 C
t_LPO
800
>125 C
600
1500
x
s
1500
x
3 D _{External reset pulse width}³
t_extrst
100
—
ns
x
x
4 D _{Reset low drive}⁴
t_rstdrv
66 x t_cyc
—
ns
x
x
Pin interrupt pulse width
8 D Asynchronous path²
Synchronous path⁵
t_ILIH, t_IHIL
100
1.5 x t_cyc
—
—
ns
x
x
Port rise and fall time —
Low output drive (PTxDS = 0) (load = 50 pF)⁵
Slew rate control disabled (PTxSE = 0)
t_Rise, t_Fall
—
Slew rate control enabled (PTxSE = 1)
—
9C
Port rise and fall time —
High output drive (PTxDS = 1) (load = 50 pF)⁶
Slew rate control disabled (PTxSE = 0)
t_Rise, t_Fall
—
Slew rate control enabled (PTxSE = 1)
—
40
—
ns
x
x
75
—
11
—
ns
x
x
35
—
1 _{Typical values are based on characterization data at VDD = 5.0V, 25C unless otherwise stated.}
2 _{Electrical characteristics only apply to the temperature rated devices marked with x.}
3 _{This is the shortest pulse that is guaranteed to be recognized as a reset pin request. Shorter pulses are not guaranteed to}
override reset requests from internal sources.
4 _{When any reset is initiated, internal circuitry drives the reset pin low for about 66 cycles of tcyc. After POR reset the bus clock}
frequency changes to the untrimmed DCO frequency (f_reset = (f_{dco_ut})/4) because TRIM is reset to 0x80 and FTRIM is reset to
0, and there is an extra divide-by-two because BDIV is reset to 0:1. After other resets trim stays at the pre-reset value.
5 _{Timing is shown with respect to 20% VDD and 80% VDD levels. Temperature range –40C to 125C.}
MC9S08SG8 MCU Series Data Sheet, Rev. 7
Freescale Semiconductor
305