ZLF645E0Q2064G Zilog, ZLF645E0Q2064G Datasheet - Page 30

• Manufacturer Part Number: ZLF645E0Q2064G
• Description: IC MCU 64K FLASH 1K RAM 20-QFN
• Manufacturer: Zilog
• Series: Crimzon™ ZLFr

Specifications of ZLF645E0Q2064G

• Core Processor: Z8 LXMC
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, WDT
• Number Of I /o: 16
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.9 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Oscillator Type: -
• Other names: 269-4723

PS026407-0408
Open-Drain
I/O
Out
In
Port 2
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. A flash programming 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 recover from the STOP mode. P20 can be programmed to access the edge-detec-
tion circuitry in DEMODULATION mode.
FLASH MCU
ZLF645
Figure 8. Port 2 Configuration
Figure 8
Port 2 (I/O)
displays the Port 2 configuration.
ZLF645 Series Flash MCUs
Product Specification
V
DD
Resistive pull-up
Option
transistor
Flash Programming
Pad
Port 2
22