Z80189 查看數據表（PDF） - Zilog
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Z80189 Datasheet PDF : 107 Pages
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Zilog
PRELIMINARY
16550 MIMIC TIMING (Continued)
/HRD
Z80189/Z8L189
GENERAL-PURPOSE EMBEDDED CONTROLLERS
/HDDIS
13
No Sym
13 tRDD
Figure 24. Driver Enable Timing
Parameter
/HRD to Driver
Enable/Disable
Table 6. Driver Enable Timing Table
Z8L189-20 MHz
Min
Max
Z80189-33 MHz
Min
Max
60
60
Units
ns
/WR (MPU)
RBR
HINTR
(Trigger
Level)
HINTR
(Line
Status
RDR
/HRD LSR
/HRD RBR
22
14
14
15
15
Figure 25. Interrupt Timing RCVR FIFO
DS971890301
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