mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 519

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
23.10 General-Purpose I/O Port AC Timing
Table 23-21 lists GPIO port timings.
Figure 23-21 shows GPIO timings listed in Table 23-21.
23.11 USB Interface AC Timing Specifications
Table 23-22 lists USB interface timings.
Name
US2
US3
US1
US4
US5
2
2
Specifications
USB_CLK frequency of operation
USB_CLK fall time (from V
USB_CLK rise time (from V
USB_CLK duty cycle (measured at 1.5 V)
USB Inputs (USB_RP, USB_RN, USB_RxD) setup time to USB_CLK (rising)
1
Table 23-21. General-Purpose I/O Port AC Timing Specifications
Name
All timing references to SDCLK are given to its rising edge when bit 3 of the SDRAM
control register is 0.
G1
G2
G3
G4
Table 23-22. USB Interface AC Timing Specifications
PORTx input setup time to SDCLK (rising)
PORTx input hold time from SDCLK (rising)
SDCLK to PORTx output valid
SDCLK to PORTx output invalid (output hold)
Figure 23-21. General-Purpose I/O Port Timing
PORTx OUT
Chapter 23. Electrical Characteristics
h
l
PORTx IN
= 2.4V to V
= 0.5V to V
Characteristic
SDCLK
1
Characteristic
l
h
= 0.5V)
= 2.4V)
P1
1
P3
General-Purpose I/O Port AC Timing Specifications
Min
—
6
1
0
0–66 MHz
P2
P4
Max
11.5
—
—
—
Min
48-66 MHz
48
45
—
—
6
Unit
nS
nS
nS
nS
Max
48
55
—
2
2
23-25
Unit
MHz
nS
nS
nS
%