Z86D86 Datasheet, PDF (21/80 Pages) Zilog, Inc. – 28-Pin Low-Voltage OTP Microcontroller

Z86D86
28-Pin Low-Voltage OTP Microcontroller
13
4
Z86D86
4
MCU
Port 0 (I/O)
Open-Drain
I/O
EPROM ^VCC
Option
200 KOhms +50%
resistive transistor
pull-ups
Pad
Out
In
In
0.4 V_CC
*EPROM Selectable
Trip Point Buffer
Figure 6. Port 0 Configuration
Port 2 (P27–P20)
Port 2 is an 8-bit, bidirectional, CMOS-compatible I/O port. These eight I/O lines
can be independently configured under software control as inputs or outputs. Port
2 is always available for I/O operation. A mask option is available to connect eight
200 KΩ (±50%) pull-up transistors on this port. Bits programmed as outputs are
PS008905-0105
PRELIMINARY