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参数资料
| 型号： | MCF54418CMJ250 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | MICROPROCESSOR, PBGA256 |
| 封装： | 12 X 12 MM, ROHS COMPLAINT, MAPBGA-256 |
| 文件页数： | 24/60页 |
| 文件大小： | 1107K |
| 代理商： | MCF54418CMJ250 |
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MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Electrical characteristics
Freescale Semiconductor
30
Figure 12. FlexBus write timing
4.11
NAND flash controller (NFC) timing specifications
The NAND flash controller (NFC) implements the interface to standard NAND flash memory devices. This section describes
the timing parameters of the NFC.
All NFC signals use pad type pad_fsr. The following timing specifications assume a pad slew rate setting of 11 and a load of
50 pF.1
1.These timing parameters are specified assuming maximum operating frequency and the fastest pad slew rate setting
(11). When operating this interface at lower frequencies, increase the slew rate by using the 10, 01, or 00 setting to
increase edge rise and fall times, thus reducing EMI.
Table 17. NFC timing specifications
Num
Characteristic
Symbol
Min
Max
Unit
Frequency of operation
—
401
MHz
NF1
Clock period
tNFC
25
—
ns
NF2
NFC_CLE setup time
tCLS
1.5
t
NFC
—ns
NF3
NFC_CLE hold time
tCLH
tNFC
—ns
NF4
NFC_CE setup time
tCS
1.5
t
NFC
—ns
NF5
NFC_CE hold time
tCH
tNFC
—ns
NF6
NFC_WE pulse width
tWP
0.5
t
NFC – 0.5
—
ns
FB_CLK
FB_R/W
FB_ALE
FB_OE
S0
S2
S3
DATA
FB_TSIZ[1:0]
TSIZ[1:0]
S1
ADDR[31:X]
FB_AD[Y:0]
FB_AD[31:X]
ADDR[Y:0]
FB_CSn, FB_BE/BWEn
FB_TA
FB3
FB1
FB2
FB5
FB4
FB_TS
Note:
1 FB2 and FB3 output specifications are valid for all FB_AD[31:0], FB_R/W, FB_ALE, FB_TS,
FB_CSn, FB_OE, FB_BE/BWEn, and FB_TSIZ[1:0].
2 FB4 and FB5 input specifications are valid for all FB_AD[31:0] and FB_TA.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF54418CMJ250 | 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA |
| MCF5441X | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MCF5441x ColdFire Microprocessor Data Sheet |
| MCF54450 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54450ACVM180 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 180MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays 制造商:Freescale Semiconductor 功能描述:MCF5445X V4M CORE, MMU, 制造商:Freescale 功能描述:MPU MCF5445X RISC 32-Bit 180MHz 1.8V/2.5V/3.3V 256-Pin MAP-BGA Brick |
| MCF54450AVM240 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 240MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays |
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