Z86C72 Datasheet, PDF (3/71 Pages) Zilog, Inc. – IR MICROCONTROLLER

Zilog
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
Port 0
Port 1
Port 2
Z86C72/C92/L72/L92
IR Microcontroller
Register File
256 x 8-Bit
Register Bus
ROM
16K/0K x 8
Internal
Address Bus
Internal Data Bus
Z8 Core
Expanded
Register
File
512 x 8-Bit
Expanded
Register Bus
Port 3
Machine
Timing
&
Instruction
Control
Counter/Timer 8
8-Bit
Counter/Timer 16
16-Bit
Power
Figure 2. Functional Block Diagram
P31
1
P32
P33
P34
P35
P36
P37
XTAL
/AS
/DS
R/W
/RESET
VDD
VSS
Note: All Signals with a preceding front slash, "/", are ac-
tive Low, e.g., B//W (WORD is active Low); /B/W (BYTE is
active Low, only).
Power connections follow conventional descriptions be-
low:
Connection
Power
Ground
Circuit
V_CC
GND
Device
V_DD
V_SS
DS97LVO0900
PRELIMINARY
6-3