SCF5249VM140 FREESCALE [Freescale Semiconductor, Inc], SCF5249VM140 Datasheet - Page 42

• Manufacturer Part Number: SCF5249VM140
• Description: Integrated ColdFire Microprocessor
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Electrical Characteristics
42
1.
2.
3.
M10
M12
M13
Num
M11
Since SCL and SDA are open-collector-type outputs, which the processor can only actively drive low, this
specification applies only when SCL or SDA are driven low by the processor. The time required for SCL or
SDA to reach a high level depends on external signal capacitance and pull-up resistor values.
Since SCL and SDA are open-collector-type outputs, which the processor can only actively drive low, this
specification applies only when SCL or SDA are actively being driven or held low by the processor.
SCL and SDA are internally synchronized.This setup time must be met only if recognition on a particular
clock is required.
3
1
2
Num
P1
P2
SCL, SDA Valid to SCLK (input setup)
SCLK to SCL, SDA Invalid (input hold)
SCLK to SCL, SDA Low (output valid)
SCLK to SCL, SDA Invalid (output hold)
Table 29. General-Purpose I/O Port AC Timing Specifications
SCF5249 Integrated ColdFire® Microprocessor Data Sheet, Rev. 3
GPIO Valid to SCLK (input setup)
SCLK to GPIO Invalid (input hold)
Figure 14. I
SCL, SDA OUT
SCL, SDA OUT
SCL, SDA IN
Table 28. I2C Output Bus Timings
SCLK
2
C and System Clock Timing Relationship
Characteristic
Characteristic
M10
M11
M12
Min
tbd
tbd
M13
Min
tbd
tbd
tbd
—
Max
—
—
Max
tbd
—
—
—
Units
nSec
nSec
Freescale Semiconductor
Units
nSec
nSec
nSec
nSec