MCF51JU128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51JU128VHS Datasheet - Page 17

• Manufacturer Part Number: MCF51JU128VHS
• Description: MCF51JU128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.3 Switching electrical specifications
1. A maximum frequency of 25 MHz for the LPTMR in VLPR mode is possible when the LPTMR is configured for pulse
5.3.1 General Switching Specifications
These general purpose specifications apply to all signals configured for EGPIO, MTIM,
CMT, PDB, IRQ, and I
and full temperature range. The GPIO are set for high drive, no slew rate control, and no
input filter, digital or analog, unless otherwise specified.
Freescale Semiconductor, Inc.
G1
G2
G3
G4
Symbol
f
FB_CLK
FB_CLK
Symbol
SYS_USB
counting mode and is driven externally via the LPTMR_ALT1, LPTMR_ALT2, or LPTMR_ALT3 pin.
f
f
LPTMR
LPTMR
f
f
f
f
SYS
BUS
SYS
BUS
Bus clock from CLK_OUT pin high to GPIO output valid
Bus clock from CLK_OUT pin high to GPIO output invalid
(output hold)
GPIO input valid to bus clock high
Bus clock from CLK_OUT pin high to GPIO input invalid
GPIO pin interrupt pulse width (digital glitch filter disabled)
Synchronous path
System and core clock
System and core clock when USB in operation
Bus clock
Mini-FlexBus clock
LPTMR clock
System and core clock
Bus clock
Mini-FlexBus clock
LPTMR clock
Description
MCF51JU128 Advance Information Data Sheet, Rev. 1, 08/2011.
1
1
2
Table 10. EGPIO General Control Timing
C signals. The conditions are 50 pf load, V
Description
Table 9. Device clock specifications
Table continues on the next page...
Normal run mode
Preliminary
VLPR mode
—
1
28
—
1.5
Min.
20
—
—
—
—
—
—
—
—
Min.
Nonswitching electrical specifications
Max.
50
25
25
25
25
—
2
1
1
DD
32
—
—
4
—
= 1.71 V to 3.6 V,
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Max.
Unit
Notes
ns
ns
ns
ns
Bus
clock
cycles
Unit
17