Z8PE003
Z8Plus OTP Microcontroller
ZiLOG
GENERAL DESCRIPTION
(Continued)
Both the 8-bit and 16-bit on-chip timers, with several user-
selectable modes, administer real-time tasks such as count-
ing/timing and I/O data communications.
Note:
All signals with an overline are active Low. For exam-
ple, B/
W
, in which WORD is active Low;
and B
/W, in
which BYTE is active Low.
Power connections follow conventional descriptions
below:
Connection
Power
Ground
Circuit
V
CC
GND
Device
V
DD
V
SS
XTAL
V
CC
GND
Two 8-Bit Timers
or One 16-Bit
PWM Timer
Machine
Timing
One 16-Bit
Standard Timer
ALU
FLAGS
Interrupt
Control
WDT
OTP Program
Memory
Register
Pointer
One Analog
Comparator
RAM
Register File
Program
Counter
POR &
V
BO
Port A
Port B
I/O
I/O
Figure 1. Functional Block Diagram
2
PRELIMINARY
DS007500-Z8X0399
ZILOG [ ZILOG, INC. ]
