z08617 ZiLOG Semiconductor, z08617 Datasheet - Page 7

• Manufacturer Part Number: z08617
• Description: Nmos Z8 8-bit Mcu Keyboard Controller
• Manufacturer: ZiLOG Semiconductor

PIN FUNCTIONS (Continued)
Port 1 (P17-P10). Port 1 is an 8-bit, byte programmable,
bidirectional, NMOS compatible I/O port. These eight I/O
lines are configured under software control program as a
Output
Input
OEN
Z8615
Figure 6. Port 1 Configuration
(Open-Drain Output)
8
I/O
byte input port or as an open-drain output port. When used
as an I/O port, inputs are standard NMOS (Figure 6).
Port 1
Pad
Z08617 NMOS Z8
K
EYBOARD
®
C
ONTROLLER
8-B
IT
MCU
7