ZLF645E0Q2064G Zilog, ZLF645E0Q2064G Datasheet - Page 36

• 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
Port 4
Note:
Comparator Inputs
Comparator Outputs
In ANALOG mode, P31 and P32 have a comparator front end. The comparator reference
is supplied by P33 and P
corresponding IRQ1 are diverted to the Stop Mode Recovery sources (excluding P31, P32,
and P33) as displayed in
the Port 3 input register, which then generates IRQ1.
Comparators are powered down by entering STOP mode. For P30:P33 to be used as an
SMR source, these inputs must be placed into DIGITAL mode.
The comparators can be programmed to output on P34 and P37 by setting bit 0 of the
PCON register.
Port 4 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 4 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 POR function resets with the eight bits of Port 4
[P47:40] configured as inputs.
Figure 9
REF1
Figure 11
. In ANALOG mode, the P33 internal data latch and its
on page 24. In DIGITAL mode, P33 is used as bit 3 of
on page 29 displays the Port 4 configuration.
ZLF645 Series Flash MCUs
Product Specification
Port 4
28