參數(shù)資料
型號(hào): MCIMX514AJM6C
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA529
封裝: 19 X 19 MM, 0.8 MM PITCH, ROHS COMPLIANT, BGA-529
文件頁數(shù): 95/172頁
文件大小: 2218K
代理商: MCIMX514AJM6C
Electrical Characteristics
i.MX51A Automotive and Infotainment Applications Processors, Rev. 4
Freescale Semiconductor
29
4.4
Output Buffer Impedance Characteristics
This section defines the I/O Impedance parameters of the i.MX51A processor.
4.4.1
LVIO I/O Output Buffer Impedance
Table 26 shows the LVIO I/O output buffer impedance.
4.4.2
DDR2 Output Buffer Impedance
Table 27 shows the DDR2 output buffer impedance.
Table 26. LVIO I/O Output Buffer Impedance
Parameter
Symbol
Conditions
Min
Typical
Max
Unit
OVDD 2.775 V OVDD 1.875 V
Output Driver
Impedance
Rpu
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength, Ztl = 37.5
Ω
80
40
27
20
104
52
35
26
150
75
51
38
250
125
83
62
Ω
Output Driver
Impedance
Rpd
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength, Ztl = 37.5
Ω
64
32
21
16
88
44
30
22
134
66
44
34
243
122
81
61
Ω
Table 27. DDR2 I/O Output Buffer Impedance HVE = 0
Parameter
Symbol
Test Conditions
Best Case
Tj = –40 °C
OVDD = 1.95 V
VCC = 1.3 V
Typical
Tj = 25 °C
OVDD = 1.8 V
VCC = 1.2 V
Worst Case
Tj = 105 °C
OVDD = 1.6 V
VCC = 1.1 V
Unit
s0–s5
000000
s0–s5
101010
s0–s5
111111
Output Driver
Impedance
Rpu
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength
185
92.5
61.7
26.5
140
70
47
19.5
111.4
55.7
37.2
15.4
Ω
Output Driver
Impedance
Rpd
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength
190.3
95.1
63.4
27.6
145.4
72.7
48.5
19.9
120.6
60.3
40.2
16.9
Ω
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