ZLF645S2864GP0001 Maxim Integrated, ZLF645S2864GP0001 Datasheet - Page 29

• Manufacturer Part Number: ZLF645S2864GP0001
• Description: 8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
• Manufacturer: Maxim Integrated

Specifications of ZLF645S2864GP0001

• Core: Z8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 1 KB
• Operating Supply Voltage: 2 V to 3.6 V
• Interface Type: UART
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 8 bit, 1 x 16 bit
• Processor Series: ZLF645
• Program Memory Type: Flash

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