Z8615 Datasheet, PDF (2/10 Pages) Zilog, Inc. – NMOSZ8 8-BITMCU KEYBOARD CONTROLLER

GENERAL DESCRIPTION (Continued)
Output Input
Vcc GND
Z8615
CPS DC-4143-05
XTAL1 XTAL2 /RESET /WDTOUT
Port 3
Counter/
Timers (2)
Interrupt
Control
ALU
Flags
Register
Pointer
Register File
124 x 8 Bit
Machine
Timing & Inst.
Control
WDT
POR
Program
Memory
Program
Counter
Port 2
I/O
(Bit Programmable)
Port 0
Port 1
4
4
I/O
Output Open Drain
(Nibble Programmable)
8
I/O
Output Open Drain
(Byte Programmable)
Functional Block Diagram
2