参数资料
型号: S80C196EA
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MICROCONTROLLER, PQFP16
封装: QFP-160
文件页数: 17/32页
文件大小: 869K
代理商: S80C196EA
80C196EA -
Commercial
20
Preliminary Datasheet
6.4
Deferred Bus Timing Mode
Deferred Bus Cycle Mode: This bus mode (enabled by setting CCB1.5) reduces bus contention
when using the 80C196EA in demultiplexed mode with slow memories. As shown in Figure 8, a
delay of 2t occurs in the first bus cycle following a chip-select output change and the first write
cycle following a read cycle.
Figure 8. Deferred Bus Mode Timing Diagram
CLKOUT
ALE
RD#
A3246-02
TWHLH + 2t
TRHLH + 2t
TAVRL + 2t
TAVWL + 2t
AD15:0
(read)
WR#
AD15:0
(write)
BHE#, INST
A20:0
CS
x#
TAVDV+ 2t
TLHLH + 2t
Data In
Data Out
Valid
Data Out
Address Out
Data Out
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