參數(shù)資料
型號(hào)： Intel386 EX
廠商： Intel Corp.
英文描述： Highly Integrated, 32-Bit, Fully Static Embedded Micropocessor(32位高集成完全靜態(tài)嵌入式微處理器)
中文描述： 高度集成，32位，全靜態(tài)嵌入式Micropocessor（32位高集成完全靜態(tài)嵌入式微處理器）
文件頁(yè)數(shù)： 26/48頁(yè)
文件大?。?/td> 515K
代理商： INTEL386 EX
Special Environment
Intel386 EX Embedded Processor
22
PRELIMINARY
t33
LBA# Valid Delay
4
32
t34
CS6:0#, UCS# Valid Delay
7
32
t41
A25:1, BHE#, BLE# Valid to WR# Low
0
t41a
UCS#, CS6:0# Valid to WR# Low
0
t42
A25:1, BHE#, BLE# Hold After WR#
High
5
t42a
UCS#, CS6:0# Hold after WR# High
5
t43
D15:0 Output Valid to WR# High
3CLK2
–27
(Note 6)
t44
D15:0 Output Hold After WR# High
CLK2
–10
t45
WR# High to D15:0 Float
CLK2
+ 10
(Note 4)
t46
WR# Pulse Width
3CLK2
–15
t47
A25:1, BHE#, BLE# Valid to D15:0 Valid
4CLK2 -
36
(Note 6)
t47a
UCS#, CS6:0# Valid to D15-D0 Valid
4CLK2 -
46
(Note 6)
t48
RD# Low to D15:0 Input Valid
3CLK2
– 36
(Note 6)
t49
D15:0 Hold After RD# High
2
t50
RD# High to D15:0 Float
10
(Note 4)
t51
A25:1, BHE#, BLE# Hold After RD# High
0
t51a
UCS#, CS6:0# Hold after RD# High
0
t52
RD# Pulse Width
3CLK2
–15
Table 11. AC Characteristics
(Sheet 3 of 5)
Symbol
Parameter
25 MHz
4.75 V to 5.25 V
Test Condition
Min.
(ns)
Max.
(ns)
NOTES:
1. Tested at maximum operating frequency and guaranteed by design characterization at lower operating frequencies.
2. These are not tested. They are guaranteed by characterization.
3. Tested with C
L
set at 50 pF. Timings are guaranteed with C
L
set at 75 pF.
4. Float condition occurs when maximum output current becomes less than I
LO
in magnitude. Float delay is not fully tested.
5. These inputs may be asynchronous to CLK2. The setup and hold specifications are given for testing purposes to ensure
recognition within a specific CLK2 period.
6. These specifications are for information only and are not tested. They are intended to assist the designer in selecting
memory speeds. For each wait state in the design add two CLK2 cycles to the specification.
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