MC908GZ60CFJE Freescale Semiconductor, MC908GZ60CFJE Datasheet - Page 90

• Manufacturer Part Number: MC908GZ60CFJE
• Description: IC MCU 60K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908GZ60CFJE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: CAN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Controller Family/series: HC08
• No. Of I/o's: 21
• Ram Memory Size: 2KB
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Embedded Interface Type: CAN, SCI, SPI
• Rohs Compliant: Yes
• Processor Series: HC08GZ
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: CAN, ESCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68EML08GZE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 24 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Clock Generator Module (CGM)
External factors, however, can cause drastic changes in the operation of the PLL. These factors include
noise injected into the PLL through the filter capacitor, filter capacitor leakage, stray impedances on the
circuit board, and even humidity or circuit board contamination.
4.8.3 Choosing a Filter
As described in
stability and reaction time of the PLL. The PLL is also dependent on reference frequency and supply
voltage.
Figure 4-9
the PLL are not critical, the three component filter network shown in
single capacitor, C
components at various reference frequencies. For reference frequencies between the values listed in the
table, extrapolate to the nearest common capacitor value. In general, a slightly larger capacitor provides
more stability at the expense of increased lock time.
90
shows two types of filter circuits. In low-cost applications, where stability and reaction time of
4.8.2 Parametric Influences on Reaction
F
1 MHz
2 MHz
3 MHz
4 MHz
5 MHz
6 MHz
7 MHz
8 MHz
f
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
, as shown in shown in
RCLK
C
CGMXFC
F
Table 4-5. Example Filter Component Values
V
(A)
SSA
8.2 nF
4.7 nF
3.3 nF
2.2 nF
1.8 nF
1.5 nF
1.2 nF
1 nF
C
F1
Figure 4-9. PLL Filter
Figure 4-9
820 pF
470 pF
330 pF
220 pF
180 pF
150 pF
120 pF
100 pF
C
(A). Refer to
F2
Time, the external filter network is critical to the
C
R
F1
CGMXFC
F1
Table 4-5
R
Figure 4-9
2k
2k
2k
2k
2k
2k
2k
2k
(B)
F1
V
SSA
C
F2
for recommended filter
(B) can be replaced by a
6.8 nF
5.6 nF
4.7 nF
3.9 nF
3.3 nF
2.7 nF
2.2 nF
18 nF
C
Freescale Semiconductor
F