参数资料
型号: MB86703PF
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP80
封装: 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件页数: 20/32页
文件大小: 189K
代理商: MB86703PF
Plug and Play ISA Controller
MB86703
27
Table 17. Memory Chip Select Generation Cycle (Memory Mode Only)
SYMBOL
PARAMETER DESCRIPTION
MINIMUM
TYPICAL
MAXIMUM
UN
t1
BALE pulse width
48
ns
t2
BALE low to LA<23:17> invalid
15
ns
t3
AEN low, LA<23:17> valid to SA<16:0>
valid
0ns
t4
LA<23:17> valid to /MEMCS16 low
8
18
ns
t5
LA<23:17> invalid to /MEMCS16 high
(depends on pull-up resistor value)
38
ns
t6
SA<16:0> valid to /MCSn low
12
30
ns
t7
AEN high, SA<16:0> invalid to /MCSn high
3
10
ns
Note: /MCSn generation is conditional by AEN low only if EEPROM 0x003<2> or 0x008<2> is programmed to a “1”.
/MCSn
SA<16:0>
/MEMCS16
AEN
LA<23:17>
BALE
t1
t2
t4
t3
t6
t7
t5
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