參數(shù)資料
型號： MCIMX258CVM4
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, MICROPROCESSOR, PBGA400
封裝： 17 X 17 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-400
文件頁數(shù)： 70/154頁
文件大?。?/td> 1498K
代理商： MCIMX258CVM4
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
22
Freescale Semiconductor
3.5.1.2
DDR_TYPE = 01 SDRAM I/O DC Parameters
Table 18 shows the DC I/O parameters for SDRAM.
Note:
1. Simulation circuit for parameters Voh and Vol for I/O cells is below
2. Minimum condition: bcs model, OVDD = 3.6 V, and –40 °C. Typical condition: typical model, OVDD = 3.3 V, and 25 °C.
Maximum condition: wcs model, OVDD = 3.0 V, and 105 °C.
3. Typical condition: typical model, OVDD = 3.3 V, and 25 °C. Maximum condition: bcs model, OVDD = 3.6 V, and 105 °C.
3.5.1.3
DDR_TYPE = 10 Max Setting DDR I/O DC Parameters
Table 19 shows the I/O parameters for DDR2 (SSTL_18).
Table 18. SDRAM DC Electrical Characteristics
DC Electrical Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Notes
High-level output voltage
Voh
Ioh = Specified Drive
(Ioh = –4, –8, –12,
–16mA)
2.4
—
V
1
Low-level output voltage
Vol
Ioh = Specified Drive
(Ioh = 4, 8, 12, 16mA)
——
0.4
V
1
High-level output current
I
Ioh
Standard Drive
High Drive
Max. Drive
–4.0
–8.0
–12.0
——
mA
—
Low-level output current
I
Iol
Standard Drive
High Drive
Max. Drive
4.0
8.0
12.0
——
mA
—
High-level DC input voltage
VIH
—
2.0
—
3.6
V
—
Low-level DC input voltage
VIL
—
–0.3 V
—
0.8
V
Input current (no pull-up/down)
IIN
VI = 0
VI = OVDD
——
150
80
nA
2, 3
High-impedance I/O supply current
Icc-ovdd
VI = OVDD or 0
—
1180
nA
2, 3
High-impedance core supply
current
Icc-vddi
VI = VDD or 0
—
1220
nA
Table 19. DDR2 (SSTL_18) I/O DC Electrical Characteristics
DC Electrical Characteristics
Symbol
Test
Conditions
Min.
Typ.
Max.
Units
Notes
High-level output voltage
Voh
—
OVDD – 0.28
—
V
—
Low-level output voltage
Vol
—
0.28
V
Output min. source current
IIoh
—
–13.4
—
mA
1
Output min. sink current
IIol
—
13.4
—
mA
2
DC input logic high
VIH(dc)
—
OVDD/2 + 0.125
—
OVDD + 0.3
V
—
DC input logic low
VIL(dc)
—
–0.3 V
—
OVDD/2 – 0.125
V
—
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