參數(shù)資料
型號: MC68EC000EI20
廠商: Freescale Semiconductor
文件頁數(shù): 8/26頁
文件大小: 0K
描述: IC MPU 32BIT 20MHZ 68-PLCC
標準包裝: 18
系列: M680x0
處理器類型: M680x0 32-位
速度: 20MHz
電壓: 3.3V,5V
安裝類型: 表面貼裝
封裝/外殼: 68-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 68-PLCC(25x25)
包裝: 管件
16
M68000 USER’S MANUAL ADDENDUM
MOTOROLA
8.0 MC68SEC000 AC ELECTRICAL SPECIFICATIONS — BUS
ARBITRATION
Add the following table and Figure 11 to Section 10.17.
(GND = 0 Vdc; TA = TL to TH; refer to Figure 13)
Applies to 3.3V and 5V.
1. The minimum value must be met to guarantee proper operation. If the maximum value is exceeded, BG may be reasserted.
NUM
CHARACTERISTICp
10MHz
16MHz
20MHz
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
7
Clock High to Address, Data Bus High Impedance (Maximum)
55
50
42
ns
16
Clock High to Control Bus High Impedance
55
50
42
ns
33
Clock High to BG Asserted
0
35
0
30
0
25
ns
34
Clock High to BG Negated
0
35
0
30
0
25
ns
35
BR Asserted to BG Asserted
1.5
3.5
1.5
3.5
1.5
3.5
Clks
36
BR Negated to BG Negated
1.5
3.5
1.5
3.5
1.5
3.5
Clks
38
BG Asserted to Control, Address, Data Bus High Impedance (AS
Negated)
—55—50—42
ns
39
BG Width Negated
1.5
1.5
1.5
Clks
47
Asynchronous Input Setup Time
5—5—5—
ns
581
BR Negated to AS, LDS, UDS, R/W Driven
1.5
1.5
1.5
Clks
58A1
BR Negated to FC Driven
1—1—1—
Clks
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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