MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
58
Freescale Semiconductor
I2C
Figure 37 provides the boundary-scan timing diagram.
Figure 37. Boundary-Scan Timing Diagram
13 I2C
This section describes the DC and AC electrical characteristics for the I2C interfaces of the MPC8544E.
13.1
I2C DC Electrical Characteristics
Table 51 provides the DC electrical characteristics for the I2C interfaces. Table 51. I2C DC Electrical Characteristics
At recommended operating conditions with OVDD of 3.3 V ± 5%.
Parameter
Symbol
Min
Max
Unit
Notes
Input high voltage level
VIH
0.7
× OVDD
OVDD +0.3
V
—
Input low voltage level
VIL
–0.3
0.3
× OVDD
V—
Low level output voltage
VOL
00.2
× OVDD
V1
Pulse width of spikes which must be suppressed by the
input filter
tI2KHKL
050
ns
2
Input current each I/O pin (input voltage is between
0.1
× OVDD and 0.9 × OVDD(max)
II
–10
10
μA3
Capacitance for each I/O pin
CI
—10
pF
—
Notes:
1. Output voltage (open drain or open collector) condition = 3 mA sink current.
2. Refer to the MPC8544EPowerQUICC III Integrated Communications Host Processor Reference Manual for information on
the digital filter used.
3. I/O pins will obstruct the SDA and SCL lines if OVDD is switched off.
VM = Midpoint Voltage (OVDD/2)
VM
tJTDVKH
tJTDXKH
Boundary
Data Outputs
Boundary
Data Outputs
JTAG
External Clock
Boundary
Data Inputs
Output Data Valid
tJTKLDX
tJTKLDZ
tJTKLDV
Input
Data Valid
Output Data Valid