z8l189 ZiLOG Semiconductor, z8l189 Datasheet - Page 23

• Manufacturer Part Number: z8l189
• Description: General-purpose Embedded Controllers
• Manufacturer: ZiLOG Semiconductor

DS971890301
16550 MIMIC TIMING (Continued)
No
14
15
Zilog
Sym
tSINT
tRINT
/WR (Host)
THR
/RD (MPU)
TxFIFO
HINTR
THRE
/RD (Host)
11R
Parameter
Delay from Stop to Set
Interrupt
Delay from /HRD
(RD RBR or RD LSR)
to Reset Interrupt
Figure 26. Interrupt Timing Transmitter FIFO
Table 7. Interrupt Timing RCVR FIFO Table
P R E L I M I N A R Y
Z8L189-20 MHz
Min
16
Max
2
2
17
Z80189-33 MHz
Min
G
ENERAL
-P
18
Max
2
2
URPOSE
E
MBEDDED
Units
phi cycles
phi cycles
Z80189/Z8L189
C
ONTROLLERS
23