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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： | 50/60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
54
Figure 36. RGPIO timing
4.29
JTAG and boundary scan timing specifications
All JTAG signals use pad type pad_msr except for TCLK which 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 40. JTAG and boundary scan timing
Num
Characteristics1
1 JTAG_EN is expected to be a static signal. Hence, specific timing is not associated with it.
Min
Max
Unit
J1
TCLK frequency of operation
DC
25
MHz
J2
TCLK cycle period
40
—
ns
J3
TCLK clock pulse width
20
—
ns
J4
TCLK rise and fall times
—
3
ns
J5
Boundary scan input data setup time to TCLK rise
4
—
ns
J6
Boundary scan input data hold time after TCLK rise
20
—
ns
J7
TCLK low to boundary scan output data valid
—
13
ns
J8
TCLK low to boundary scan output high-Z
—
13
ns
J9
TMS, TDI input data setup time to TCLK rise
4
—
ns
J10
TMS, TDI input data hold time after TCLK rise
10
—
ns
J11
TCLK low to TDO data valid
—
12
ns
J12
TCLK low to TDO high-Z
—
0
ns
J13
TRST assert time
32
—
ns
J14
TRST setup time (negation) to TCLK high
8
—
ns
RG1
PST_CLK
RGPIO Outputs
RGPIO Inputs
RG2
RG3
RG4
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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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