Z86U18 Datasheet, PDF (11/30 Pages) Zilog, Inc. – USB Device Controller with CMOS Z86K15 MCU

Zilog
Z86U18
USB Device Controller with CMOS Z86K15 MCU
Port 2 (P27-P20). Port 2 is an 8-bit CMOS-compatible P20-P24 have 10.4 K (±35 percent) pull-up resistors. P25
Port with 4-bit input, 4-bit programmable I/O (Figure 10). and P26 have 2.4 K (±25 percent) pull-up resistor.
1
Z86UXX
4
Input
I/O
(a) Ports P20-P23
Input
OEN
Open-Drain
(b) Port P24
OUT
IN
OEN
Open-Drain
(c) Ports P25-P26
OUT
IN
Input
Input
VCC
10.4 K
Pad
VCC
10.4 kOhm
Pad
VCC
2.4K
Pad
Figure 10. Port 2 ConÞguration
DS97KEY0102
PRELIMINARY
11