Z80181 Datasheet, PDF (2/74 Pages) Zilog, Inc. – SMART ACCESS CONTROLLER (SAC™)

Zilog
GENERAL DESCRIPTION (Continued)
Z80181
SMART ACCESS CONTROLLER SAC^™
D7-D0
Control
A19-A0
Z80180
Compatible
Core
/ROMCS
/RAMCS
Glue
Logic
A19-A12
Address
Decode
Logic
SCC
(1 Channel)
CTC
Tx Data
Rx Data
Modem/Control
8 _Signals
PIA1
PIA2
Bit Programmable
8 Bi-directional I/O
or I/O Pins of CTC
Bit Programmable
8 Bi-directional I/O
Z80181 = Z180 + SCC/2 + CTC + PIA
Figure 1. Z80181 Functional Block Diagram
2-2
DS971800500