參數資料
型號： MC8641VU1250HB
廠商： Freescale Semiconductor
文件頁數： 45/130頁
文件大?。?/td> 0K
描述： IC MPU SGL E600 CORE 994FCCBGA
標準包裝： 1
系列： MPC86xx
處理器類型： 32-位 MPC86xx PowerPC
速度： 1.25GHz
電壓： 1.05V
安裝類型： 表面貼裝
封裝/外殼： 994-BCBGA，FCCBGA
供應商設備封裝： 994-FCCBGA（33x33）
包裝： 托盤
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
21
DDR and DDR2 SDRAM
6
DDR and DDR2 SDRAM
This section describes the DC and AC electrical specifications for the DDR SDRAM interface of the
MPC8641. Note that DDR SDRAM is Dn_GVDD(typ) = 2.5 V and DDR2 SDRAM is
Dn_GVDD(typ) = 1.8 V.
6.1
DDR SDRAM DC Electrical Characteristics
Table 13 provides the recommended operating conditions for the DDR2 SDRAM component(s) of the
MPC8641 when Dn_GVDD(typ) = 1.8 V.
Table 14 provides the DDR2 capacitance when Dn_GVDD(typ) = 1.8 V.
Table 13. DDR2 SDRAM DC Electrical Characteristics for D
n_GVDD(typ) = 1.8 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
D
n_GVDD
1.71
1.89
V
1
I/O reference voltage
D
n_MVREF 0.49 × Dn_GVDD
0.51
× Dn_GVDD
V2
I/O termination voltage
VTT
D
n_MVREF –0.0
4
D
n_MVREF + 0.04
V
3
Input high voltage
VIH
D
n_MVREF+0.1
25
D
n_GVDD +0.3
V
—
Input low voltage
VIL
–0.3
D
n_MVREF – 0.125
V
—
Output leakage current
IOZ
–50
50
μA4
Output high current (VOUT = 1.420 V)
IOH
–13.4
—
mA
—
Output low current (VOUT = 0.280 V)
IOL
13.4
—
mA
—
Notes:
1. D
n_GVDD is expected to be within 50 mV of the DRAM Dn_GVDD at all times.
2. D
n_MVREF is expected to be equal to 0.5 × Dn_GVDD, and to track Dn_GVDD DC variations as measured at the
receiver. Peak-to-peak noise on D
n_MVREF may not exceed ±2% of the DC value.
3. VTT is not applied directly to the device. It is the supply to which far end signal termination is made and is expected to be
equal to D
n_MVREF. This rail should track variations in the DC level of Dn_MVREF.
4. Output leakage is measured with all outputs disabled, 0 V
≤ V
OUT ≤ Dn_GVDD.
Table 14. DDR2 SDRAM Capacitance for D
n_GVDD(typ)=1.8 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
Input/output capacitance: DQ, DQS, DQS
CIO
68
pF
1
Delta input/output capacitance: DQ, DQS, DQS
CDIO
—0.5
pF
1
Note:
1. This parameter is sampled. D
n_GVDD = 1.8 V ± 0.090 V, f = 1 MHz, TA = 25°C, VOUT = Dn_GVDD/2, VOUT
(peak-to-peak) = 0.2 V.
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MC8641VU1250HC 功能描述:IC MPU SGL E600 CORE 994FCCBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:MPC86xx 標準包裝:1 系列:MPC85xx 處理器類型:32-位 MPC85xx PowerQUICC III 特點:- 速度:1.2GHz 電壓:1.1V 安裝類型:表面貼裝 封裝/外殼:783-BBGA，FCBGA 供應商設備封裝:783-FCPBGA（29x29） 包裝:托盤
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