Z80181 Zilog., Z80181 Datasheet - Page 2

• Manufacturer Part Number: Z80181
• Description: SMART ACCESS CONTROLLER (SAC)
• Manufacturer: Zilog.

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