MC9S08GW64_11 Datasheet, PDF (28/42 Pages) Freescale Semiconductor, Inc – HC08 instruction set with added BGND instruction

Electrical Characteristics
Table 12. ICS Frequency Specifications (Temperature Range = –40 to 85C Ambient) (continued)
Num C
Characteristic
Symbol Min
Typ¹
Max Unit
9
C
Total deviation from trimmed DCO output frequency over
fixed voltage and temperature range of 0C to 70 C
f_{dco_t}
—
0.5
1 %f_dco
10 C _{FLL acquisition time} ²
t_Acquire
—
—
1
ms
11 C Long term jitter of DCO output clock (averaged over 2-ms
interval) ³
C_Jitter
—
0.02
0.2 %f_dco
1 _{Data in Typical column was characterized at 3.0 V, 25C or is typical recommended value.}
2 _{This specification applies to any time the FLL reference source or reference divider is changed, trim value changed or}
changing from FLL disabled (FBELP, FBILP) to FLL enabled (FEI, FEE, FBE, FBI). If a crystal/resonator is being used as
the reference, this specification assumes it is already running.
3 _{Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum fBus.}
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise
injected into the FLL circuitry via V_DD and V_SS and variation in the crystal oscillator frequency increase the C_Jitter
percentage for a given interval.
Figure 16. Deviation of DCO Output from Trimmed Frequency (20 MHz, 3.0 V)
3.10 AC Characteristics
This section describes timing characteristics for each peripheral system.
MC9S08GW64 Series MCU Data Sheet, Rev. 3
28
Freescale Semiconductor