ZLF645E0Q2064G Zilog, ZLF645E0Q2064G Datasheet - Page 28

• 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 0
Port 0 is an 8-bit bidirectional CMOS-compatible port. Its eight I/O lines are configured
under software control to create a nibble I/O port. The output drivers are push/pull or
open-drain, controlled by bit 2 of the
If one or both nibbles are required for I/O operation, they must be configured by writing to
the
configured as an input port.
Port 0, bit 7 is used as the transmit output of the UART when UART Tx is enabled. The
I/O function of Port 0, bit 7 is overridden by the UART serial output (TxD) when UART
Tx is enabled (UCTL[7] = 1). The pin must be configured as an output for TxD data to
reach the pin (P01M[6] = 0).
An optional pull-up transistor is available as an user-selectable flash programming option
on all Port 0 bits with nibble select.
Port 0/1 Mode
FLASH MCU
ZLF645
Register. After a hardware reset or a Stop Mode Recovery, Port 0 is
Figure 6. Port 0 Configuration
4
4
Figure 6
Port Configuration
displays the Port 0 configuration.
Port 0 (I/O)
Register.
ZLF645 Series Flash MCUs
Product Specification
V
DD
Resistive pull-up
Option
transistor
Flash Programming
Pad
Port 0
20