ZLF645S2864GP0001 Maxim Integrated, ZLF645S2864GP0001 Datasheet - Page 95

• 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

19-4572; Rev 0; 4/09
1
0
Idle state
of line
1
0
Idle state
of line
Data Format
Transmitting Data Using Polled Method
Start
The UART transmits and receives data in an 8-bit data format, with the least significant bit
(lsb) occurring first. An even- or odd-parity bit can be optionally added to the data stream.
Each character begins with an active Low Start bit and ends with either 1 or 2 active High
Stop bits.
UARTs with or without parity, respectively.
Follow the steps below to transmit data using the polled method of operation:
1. Write to the Baud Rate Generator Constant (BCNST) register, address
2. Write 0 to bit 6 of the P01M register.
3. Write to the UART Control register (UCTL) to:
Start
appropriate baud rate.
(a) Set the transmit enable bit, UCTL[7], to enable the UART for data transmission.
(b) If parity is appropriate, set the parity enable bit, UCTL[4] to 1 and select either
Figure 23. UART Asynchronous Data Format without Parity
Bit 0
Figure 24. UART Asynchronous Data Format with Parity
LSB
even- or odd-parity (UCTL[3]).
Figure 23
Bit 0
LSB
Bit 1
Bit 1
and
Bit 2
Figure 24
Bit 2
Bit 3
Data field
Bit 3
Data field
display the asynchronous data format employed by the
Bit 4
Bit 4
Bit 5
Bit 5
Bit 6
Bit 6
ZLF645 Series Flash MCUs
Bit 7
Bit 7
Product Specification
MSB
Bit 7
MSB
Stop bit(s)
1
0F4h
Stop bit(s)
2
1
2
, to set the
Operation
87