z86e63 ZiLOG Semiconductor, z86e63 Datasheet - Page 19

• Manufacturer Part Number: z86e63
• Description: Cmos Z8 16k/32k Eprom Microcontroller
• Manufacturer: ZiLOG Semiconductor

PS014401-1001
Figure 8. Port 2 Configuration
Port 3 (P37-P30). Port 3 is an 8-bit, CMOS compatible four-fixed input and four-
fixed output port. These eight I/O lines have four-fixed (P33-P30) input and four-
fixed (P37-P34) output ports. Port 3, when used as serial I/O, is programmed as
serial in and serial out, respectively (Figure 9).
Open-Drain
OEN
Out
In
TTL Level Shifter
Z86E61
MCU
/E63
R = 500 k Ω
CMOS Z8 16K/32K EPROM Microcontroller
Handshake controls
Port 2 (I/O)
DAV2 and RDY2
(P31 and P36)
Auto Latch
PAD
Z86E61/E63
15