Z86L972 Datasheet, PDF (11/91 Pages) Zilog, Inc. – Low-Voltage Microcontrollers

Z86L972/Z86L973/Z86L974
Low-Voltage Microcontrollers
4
Functional Block Diagram
Figure 1 shows the functional block diagram for the microcontrollers.
Register File
256 x 8-bit
Expanded
Register File
7
Port 2
0
7
Port 4
*
0
7
Port 5
0
7
Port 6
8
Program
Memory
†
256 Bytes
P52 P53
CIN2 CREF2
Two Analog
Comparators
CIN1 CREF1
P51 P50
Power Filter
V_{DD_padring}
V_DD
Z8 Core
Machine
Timing
and
Instruction
Control
XTAL 1
XTAL 2
Controlled
Current
P43
Output
8
8-Bit C/T
(Carrier)
16-Bit C/T
(Modulation)
8-Bit C/T
(General)
0
*Controlled Current Output
†Program memory is as follows:
Z86L972 4K ROM
Z86L973 8K ROM
Z86L974 16K ROM
Figure 1. Functional Block Diagram
PS010504-1002
PRELIMINARY