MCF53017_10 Datasheet, PDF (22/62 Pages) Freescale Semiconductor, Inc – Version 3 ColdFire® core with EMAC

Preliminary Electrical Characteristics
Table 10. DC Electrical Specifications (continued)
Characteristic
Symbol
Min
Max
Unit
SDRAM and FlexBus Output High Voltage
Mobile DDR/Bus Input High Voltage (nominal 1.8V)
DDR/Bus Pad Supply Voltage (nominal 2.5V)
SDR/Bus Pad Supply Voltage (nominal 3.3V)
I_OH = –5.0 mA for all modes
SDV_OH
V
SDVDD × 0.9
—
SDV_DD – 0.35
—
2.9
—
SDRAM and FlexBus Output Low Voltage
Mobile DDR/Bus Input High Voltage (nominal 1.8V)
DDR/Bus Pad Supply Voltage (nominal 2.5V)
SDR/Bus Pad Supply Voltage (nominal 3.3V)
I_OL = 5.0 mA for all modes
SDV_OL
V
—
SDV_DD × 0.1
—
0.35
—
0.4
Input Leakage Current
V_in = V_DD or V_SS, Input-only pins
Weak Internal Pull-Up/Pull-down Device Current¹
Selectable Weak Internal Pull-Up/Pull-down Device Current²
Input Capacitance ³
All input-only pins
All input/output (three-state) pins
I_in
I_APU
I_APU
C_in
–2.5
10
25
—
—
2.5
μA
315
μA
150
μA
pF
7
7
1 _{Refer to the signals section for pins having weak internal pull-up devices.}
2 _{Refer to the signals section for pins having weak internal pull-up devices.}
3 _{This parameter is characterized before qualification rather than 100% tested.}
5.4.1 PLL Power Filtering
To further enhance noise isolation, an external filter is strongly recommended for PLL analog V_DD pins. The filter shown in
Figure 8 should be connected between the board V_DD and the PLLV_DD pins. The resistor and capacitors should be placed as
close to the dedicated PLLV_DD pin as possible.
Board IV_DD
10 Ω
PLL V_DD Pin
10 µF
0.1 µF
GND
Figure 8. System PLL V_DD Power Filter
5.4.2 USB Power Filtering
To minimize noise, external filters are required for each of the USB power pins. The filter shown in Figure 2 should be
connected between the board EV_DD or IV_DD and each of the USBV_DD pins. The resistor and capacitors should be placed as
close to the dedicated USBV_DD pin as possible.
MCF5301x Data Sheet, Rev. 5
22
Preliminary—Subject to Change Without Notice
Freescale Semiconductor