参数资料
型号: MPC8555ECPXAKF
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: RISC PROCESSOR, PBGA783
封装: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件页数: 48/88页
文件大小: 1110K
代理商: MPC8555ECPXAKF
MPC8555E PowerQUICC III Integrated Communications Processor Hardware Specification, Rev. 4.2
52
Freescale Semiconductor
I2C
Figure 36 provides the test access port timing diagram.
Figure 36. Test Access Port Timing Diagram
12 I2C
This section describes the DC and AC electrical characteristics for the I2C interface of the MPC8555E.
12.1
I2C DC Electrical Characteristics
Table 39 provides the DC electrical characteristics for the I2C interface of the MPC8555E.
Table 39. 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
Output fall time from VIH(min) to VIL(max) with a bus
capacitance from 10 to 400 pF
tI2KLKV
20 + 0.1
× CB
250
ns
2
Pulse width of spikes which must be suppressed by the
input filter
tI2KHKL
050
ns
3
Input current each I/O pin (input voltage is between 0.1
×
OVDD and 0.9 × OVDD(max)
II
–10
10
μA4
Capacitance for each I/O pin
CI
—10
pF
Notes:
1. Output voltage (open drain or open collector) condition = 3 mA sink current.
2. CB = capacitance of one bus line in pF.
3. Refer to the
MPC8555E PowerQUICC III Integrated Communications Processor Reference Manual for information on the
digital filter used.
4. I/O pins obstruct the SDA and SCL lines if OVDD is switched off.
VM = Midpoint Voltage (OVDD/2)
VM
tJTIVKH
tJTIXKH
JTAG
External Clock
Output Data Valid
tJTKLOX
tJTKLOZ
tJTKLOV
Input
Data Valid
Output Data Valid
TDI, TMS
TDO
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