參數(shù)資料
型號(hào): MC9328MX1VM15
廠商: FREESCALE SEMICONDUCTOR INC
元件分類(lèi): 微控制器/微處理器
英文描述: 32-BIT, 150 MHz, RISC PROCESSOR, PBGA256
封裝: 14 X 14 MM, 1.30 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, MAPBGA-256
文件頁(yè)數(shù): 25/100頁(yè)
文件大?。?/td> 1267K
代理商: MC9328MX1VM15
Functional Description and Application Information
MC9328MX1 Technical Data, Rev. 7
30
Freescale Semiconductor
4.4.1
DTACK Signal Description
The DTACK signal is the external input data acknowledge signal. When using the external DTACK signal
as a data acknowledge signal, the bus time-out monitor generates a bus error when a bus cycle is not
terminated by the external DTACK signal after 1022 HCLK counts have elapsed. Only the CS5 group
supports DTACK signal function when the external DTACK signal is used for data acknowledgement.
4.4.2
DTACK Signal Timing
Figure 6 through Figure 9 show the access cycle timing used by chip-select 5. The signal values and units
of measure for this figure are found in the associated tables.
4a
Clock1 rise to Output Enable Valid
2.32
2.62
6.85
2.3
2.6
6.8
ns
4b
Clock1 rise to Output Enable Invalid
2.11
2.52
6.55
2.1
2.5
6.5
ns
4c
Clock1 fall to Output Enable Valid
2.38
2.69
7.04
2.3
2.6
6.8
ns
4d
Clock1 fall to Output Enable Invalid
2.17
2.59
6.73
2.1
2.5
6.5
ns
5a
Clock1 rise to Enable Bytes Valid
1.91
2.52
5.54
1.9
2.5
5.5
ns
5b
Clock1 rise to Enable Bytes Invalid
1.81
2.42
5.24
1.8
2.4
5.2
ns
5c
Clock1 fall to Enable Bytes Valid
1.97
2.59
5.69
1.9
2.5
5.5
ns
5d
Clock1 fall to Enable Bytes Invalid
1.76
2.48
5.38
1.7
2.4
5.2
ns
6a
Clock1 fall to Load Burst Address Valid
2.07
2.79
6.73
2.0
2.7
6.5
ns
6b
Clock1 fall to Load Burst Address Invalid
1.97
2.79
6.83
1.9
2.7
6.6
ns
6c
Clock1 rise to Load Burst Address Invalid
1.91
2.62
6.45
1.9
2.6
6.4
ns
7a
Clock1 rise to Burst Clock rise
1.61
2.62
5.64
1.6
2.6
5.6
ns
7b
Clock1rise to Burst Clock fall
1.61
2.62
5.84
1.6
2.6
5.8
ns
7c
Clock1 fall to Burst Clock rise
1.55
2.48
5.59
1.5
2.4
5.4
ns
7d
Clock1 fall to Burst Clock fall
1.55
2.59
5.80
1.5
2.5
5.6
ns
8a
Read Data setup time
5.54
5.5
ns
8b
Read Data hold time
0
0
ns
9a
Clock1 rise to Write Data Valid
1.81
2.72
6.85
1.8
2.7
6.8
ns
9b
Clock1 fall to Write Data Invalid
1.45
2.48
5.69
1.4
2.4
5.5
ns
9c
Clock1 rise to Write Data Invalid
1.63
1.62
ns
10a
DTACK setup time
2.52
2.5
ns
1 Clock refers to the system clock signal, HCLK, generated from the System DPLL
Table 12. EIM Bus Timing Parameter Table (Continued)
Ref No.
Parameter
1.8 ± 0.1 V
3.0 ± 0.3 V
Unit
Min
Typical
Max
Min
Typical
Max
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
i.MX1
Product
Family
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