z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 21

• Manufacturer Part Number: z80189
• Description: Z80180, Z8s180, Z8l180 Mpu Operation
• Manufacturer: ZiLOG Semiconductor

6
UM005003-0703
Z8018x
Family MPU User Manual
A18/TOUT
RXS/CTS1
Phi
CKS
TXS
Figure 4.
Generator
Timing
Programmable
Serial I/O
Clocked
Reload
Timers
Address
16-bit
Port
MMU
Buffer
A0
–
A19
Z80180/Z8S180/Z8L180 Block Diagram
Buffer
Data
D0
Bus State Control
–
DF
CPU
Asynchronous
Asynchronous
(channel 1)
(Channel 0)
DMACs
(2)
SCI
SCI
DREQ1
TEND1
TXA0
V
V
Interrupt
CKA0/DREQ0
RXA0
RTS0
CTS0
DCD0
TXA1
CKA1/TEND0
RXA1
CC
SS