ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 19

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

PS024410-0108
Port 2
Open-Drain
I/O
Out
In
Port 2 is an 8-bit, bidirectional, CMOS-compatible I/O port. Its eight I/O lines can be
independently configured under software control as inputs or outputs. Port 2 is always
available for I/O operation. An EPROM option bit is available to connect eight pull-up
transistors on this port. Bits programmed as outputs are globally programmed as either
push/pull or open-drain. The Power-On Reset function resets with the eight bits of Port 2
[P27:20] configured as inputs.
Port 2 also has an 8-bit input OR and AND gate and edge detection circuitry, which can be
used to wake up the part. P20 can be programmed to access the edge-detection circuitry in
DEMODULATION mode. For information on configuration, see
ZLP12840
OTP MCU
Figure 4. Port 0 Configuration
P R E L I M I N A R Y
4
4
Port 0 (I/O)
V
CC
Product Specification
Pad
Resistive Pull-Up
Figure 5
(OTP Option)
Transistor
I/O Port Pin Functions
on page 14.
13