ZLF645S0P2032G Zilog, ZLF645S0P2032G Datasheet - Page 88

• Manufacturer Part Number: ZLF645S0P2032G
• Description: Microcontrollers (MCU) 32K Flash 512B RAM 20 pin
• Manufacturer: Zilog

Specifications of ZLF645S0P2032G

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 32 KB
• Data Ram Size: 512 KB
• Interface Type: ICP, UART
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIP-20
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: Details

PS026407-0408
Architecture
Operation
System Bus
RxD
TxD
The UARTs consist of three primary functional blocks: transmitter, receiver, and Baud
Rate Generator. The UART transmitter and receiver function independently, but employ
the same baud rate and data format.
The UART channel can be used to communicate with a master microprocessor or a slave
microprocessor, both of which exhibit transmit and receive functionality. You can either
operate the UART channel by polling the UART Status register or via interrupts. The
UART remains active during HALT mode. If neither the transmitter nor the receiver is
enabled, the UART baud rate generator can be used as an additional timer. The UART
contains a noise filter for the receiver that can be enabled by the user.
Parity Generator
Receive Shifter
Transmit Shift
Receive Data
Transmit Data
Register
Register
Register
Figure 22. UART Block Diagram
Figure 22
Status Register
Transmitter Control
displays the UART architecture.
Control Register
ZLF645 Series Flash MCUs
Product Specification
Baud Rate
Generator
Architecture
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