ZLF645 MAXIM [Maxim Integrated Products], ZLF645 Datasheet - Page 29

• Manufacturer Part Number: ZLF645
• Description: Flash MCUs with Learning Amplification
• Manufacturer: MAXIM [Maxim Integrated Products]

PS026408-1208
Open-Drain
I/O
Out
In
Port 1
Port 1 is an 8-bit bidirectional CMOS-compatible I/O port. It can be configured under 
software control as inputs or outputs. A flash programming option bit is available to
connect eight pull-up transistors on this port. Bits programmed as output are globally
programmed as either push/pull or open-drain. The power-on reset function resets with the
eight bits of Port 1 [P17:10] configured as inputs.
configuration.
FLASH MCU
ZLF645
Figure 7. Port 1 Configuration
8
Port 1 (I/O)
Figure 7
Product Specification
displays the Port 1
V
DD
Option
Resistive pull-up
transistor
Flash Programming
Pad
Port 1
21